103

- HT

S Di

pole

des

ign

stud

ies

EuCARD2 103HTS Dipole Design Studies

03022014

030

220

14

1

ldquoAgendardquo

bull Design layouts studiesbull Open issues

bull laquo Field quality raquo conductorbull Conductor insulationbull Winding behaviorbull Mechanical characterizationbull Roebel cable impregnationbull Test coil

bull Actions listbull Meetings

2

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Design layouts

D101 Conceptual study of HTS accelerator magnets Nov 2014

bull YBCO Roebel cablebull Sheared block design CERNbull Cosine-theta design CEA

bull YBCO Stacked cablebull Block design INPGbull Cosine-theta design CEA

bull BSCCO Rutherford cablebull CCT design 8-strands cable LNBL + CERNbull Cosine-theta design 8-strands cable LNBLbull Cosine-theta design 28-strands cable CEA andor LNBLbull Block design Texas AampM

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

3

bull high Jc conductor high JE cablebull JE (B20T 42K) = 600 Ammsup2 (actual baseline) 400 Ammsup2 (new baseline)

bull field homogeneity low AC losses transposed cable configuration bull ok for BiSCCO Rutherford cables bull Ok for Roebel cables current distribution studies bull for stacked tapes cable cable transposition is proposed

bull (a) at coil endsbull (b) pole-to-polebull Need for AC-losses measurements on tapes and stacksbull Need for transposition modeling bull Geometry dependencebull positioning defaults impact

bull Need for fully twisted stacked tapesbull precise and controlled dimensions

bull an issue for YBCO Roebel Need for cable characterization winding testsbull an issue for twisted stacked tapes twist region configuration studiesbull ok for BiSCCO Rutherford cable (HT 900degC)

ldquoField qualityrdquo accelerator cable 1

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

4

(a)

(b)

ldquoField qualityrdquo accelerator cable 2bull mechanical strengthbull An issue for non impregnated Roebel cablesbull An issue for twisted stacked tapesbull Need for cable mechanical modeling

bull mechanical stabilitybull An issue for Roebel cables support impregnation

bull windability (bending radius)bull Ok for BiSCCO Rutherford cablebull To be demonstrated for YBCO cables

bull Tensile stress limitbull Bending behavior Jc degradation delamination

bull protectionbull Need for high current cable

bull Acceptable minimal value 5kA Source Calculation hypothesisbull Need for Copper stabilizer

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

5

Conductor insulation

bull Insulation candidates - YBCO cablebull Polyester coating (EuCARD HTS insert) bull Kapton bull Polyester heat shrink tubing

bull Glass fiber tape compatible with cable impregnation

bull Insulation candidate - BiSCCO cable 900 degC HT compatiblebull Glass fiber tape bull TiO2-PPC

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

6

Polyester heat shrink tubing from Advanced Polymers Inc used for Y10-04 test coil at NHMFL

Winding behavior ndash Roebel 1

bull Bending propertiesbull easy way bending (out of plane)

bull at CERN (J Fleiter) R gt 4 mmbull at CERN (Jeroen) R gt 11 mm for KIT cable Studies on link between

transposition pitch and bending radiusbull at KIT

bull hard way bending (in plane)bull R gt 900 mm (J Fleiter)bull R gt 2m (Jeroen GC cable)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

7

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

ldquoAgendardquo

bull Design layouts studiesbull Open issues

bull laquo Field quality raquo conductorbull Conductor insulationbull Winding behaviorbull Mechanical characterizationbull Roebel cable impregnationbull Test coil

bull Actions listbull Meetings

2

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Design layouts

D101 Conceptual study of HTS accelerator magnets Nov 2014

bull YBCO Roebel cablebull Sheared block design CERNbull Cosine-theta design CEA

bull YBCO Stacked cablebull Block design INPGbull Cosine-theta design CEA

bull BSCCO Rutherford cablebull CCT design 8-strands cable LNBL + CERNbull Cosine-theta design 8-strands cable LNBLbull Cosine-theta design 28-strands cable CEA andor LNBLbull Block design Texas AampM

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

3

bull high Jc conductor high JE cablebull JE (B20T 42K) = 600 Ammsup2 (actual baseline) 400 Ammsup2 (new baseline)

bull field homogeneity low AC losses transposed cable configuration bull ok for BiSCCO Rutherford cables bull Ok for Roebel cables current distribution studies bull for stacked tapes cable cable transposition is proposed

bull (a) at coil endsbull (b) pole-to-polebull Need for AC-losses measurements on tapes and stacksbull Need for transposition modeling bull Geometry dependencebull positioning defaults impact

bull Need for fully twisted stacked tapesbull precise and controlled dimensions

bull an issue for YBCO Roebel Need for cable characterization winding testsbull an issue for twisted stacked tapes twist region configuration studiesbull ok for BiSCCO Rutherford cable (HT 900degC)

ldquoField qualityrdquo accelerator cable 1

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

4

(a)

(b)

ldquoField qualityrdquo accelerator cable 2bull mechanical strengthbull An issue for non impregnated Roebel cablesbull An issue for twisted stacked tapesbull Need for cable mechanical modeling

bull mechanical stabilitybull An issue for Roebel cables support impregnation

bull windability (bending radius)bull Ok for BiSCCO Rutherford cablebull To be demonstrated for YBCO cables

bull Tensile stress limitbull Bending behavior Jc degradation delamination

bull protectionbull Need for high current cable

bull Acceptable minimal value 5kA Source Calculation hypothesisbull Need for Copper stabilizer

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

5

Conductor insulation

bull Insulation candidates - YBCO cablebull Polyester coating (EuCARD HTS insert) bull Kapton bull Polyester heat shrink tubing

bull Glass fiber tape compatible with cable impregnation

bull Insulation candidate - BiSCCO cable 900 degC HT compatiblebull Glass fiber tape bull TiO2-PPC

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

6

Polyester heat shrink tubing from Advanced Polymers Inc used for Y10-04 test coil at NHMFL

Winding behavior ndash Roebel 1

bull Bending propertiesbull easy way bending (out of plane)

bull at CERN (J Fleiter) R gt 4 mmbull at CERN (Jeroen) R gt 11 mm for KIT cable Studies on link between

transposition pitch and bending radiusbull at KIT

bull hard way bending (in plane)bull R gt 900 mm (J Fleiter)bull R gt 2m (Jeroen GC cable)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

7

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Design layouts

D101 Conceptual study of HTS accelerator magnets Nov 2014

bull YBCO Roebel cablebull Sheared block design CERNbull Cosine-theta design CEA

bull YBCO Stacked cablebull Block design INPGbull Cosine-theta design CEA

bull BSCCO Rutherford cablebull CCT design 8-strands cable LNBL + CERNbull Cosine-theta design 8-strands cable LNBLbull Cosine-theta design 28-strands cable CEA andor LNBLbull Block design Texas AampM

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

3

bull high Jc conductor high JE cablebull JE (B20T 42K) = 600 Ammsup2 (actual baseline) 400 Ammsup2 (new baseline)

bull field homogeneity low AC losses transposed cable configuration bull ok for BiSCCO Rutherford cables bull Ok for Roebel cables current distribution studies bull for stacked tapes cable cable transposition is proposed

bull (a) at coil endsbull (b) pole-to-polebull Need for AC-losses measurements on tapes and stacksbull Need for transposition modeling bull Geometry dependencebull positioning defaults impact

bull Need for fully twisted stacked tapesbull precise and controlled dimensions

bull an issue for YBCO Roebel Need for cable characterization winding testsbull an issue for twisted stacked tapes twist region configuration studiesbull ok for BiSCCO Rutherford cable (HT 900degC)

ldquoField qualityrdquo accelerator cable 1

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

4

(a)

(b)

ldquoField qualityrdquo accelerator cable 2bull mechanical strengthbull An issue for non impregnated Roebel cablesbull An issue for twisted stacked tapesbull Need for cable mechanical modeling

bull mechanical stabilitybull An issue for Roebel cables support impregnation

bull windability (bending radius)bull Ok for BiSCCO Rutherford cablebull To be demonstrated for YBCO cables

bull Tensile stress limitbull Bending behavior Jc degradation delamination

bull protectionbull Need for high current cable

bull Acceptable minimal value 5kA Source Calculation hypothesisbull Need for Copper stabilizer

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

5

Conductor insulation

bull Insulation candidates - YBCO cablebull Polyester coating (EuCARD HTS insert) bull Kapton bull Polyester heat shrink tubing

bull Glass fiber tape compatible with cable impregnation

bull Insulation candidate - BiSCCO cable 900 degC HT compatiblebull Glass fiber tape bull TiO2-PPC

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

6

Polyester heat shrink tubing from Advanced Polymers Inc used for Y10-04 test coil at NHMFL

Winding behavior ndash Roebel 1

bull Bending propertiesbull easy way bending (out of plane)

bull at CERN (J Fleiter) R gt 4 mmbull at CERN (Jeroen) R gt 11 mm for KIT cable Studies on link between

transposition pitch and bending radiusbull at KIT

bull hard way bending (in plane)bull R gt 900 mm (J Fleiter)bull R gt 2m (Jeroen GC cable)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

7

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

bull high Jc conductor high JE cablebull JE (B20T 42K) = 600 Ammsup2 (actual baseline) 400 Ammsup2 (new baseline)

bull field homogeneity low AC losses transposed cable configuration bull ok for BiSCCO Rutherford cables bull Ok for Roebel cables current distribution studies bull for stacked tapes cable cable transposition is proposed

bull (a) at coil endsbull (b) pole-to-polebull Need for AC-losses measurements on tapes and stacksbull Need for transposition modeling bull Geometry dependencebull positioning defaults impact

bull Need for fully twisted stacked tapesbull precise and controlled dimensions

bull an issue for YBCO Roebel Need for cable characterization winding testsbull an issue for twisted stacked tapes twist region configuration studiesbull ok for BiSCCO Rutherford cable (HT 900degC)

ldquoField qualityrdquo accelerator cable 1

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

4

(a)

(b)

ldquoField qualityrdquo accelerator cable 2bull mechanical strengthbull An issue for non impregnated Roebel cablesbull An issue for twisted stacked tapesbull Need for cable mechanical modeling

bull mechanical stabilitybull An issue for Roebel cables support impregnation

bull windability (bending radius)bull Ok for BiSCCO Rutherford cablebull To be demonstrated for YBCO cables

bull Tensile stress limitbull Bending behavior Jc degradation delamination

bull protectionbull Need for high current cable

bull Acceptable minimal value 5kA Source Calculation hypothesisbull Need for Copper stabilizer

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

5

Conductor insulation

bull Insulation candidates - YBCO cablebull Polyester coating (EuCARD HTS insert) bull Kapton bull Polyester heat shrink tubing

bull Glass fiber tape compatible with cable impregnation

bull Insulation candidate - BiSCCO cable 900 degC HT compatiblebull Glass fiber tape bull TiO2-PPC

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

6

Polyester heat shrink tubing from Advanced Polymers Inc used for Y10-04 test coil at NHMFL

Winding behavior ndash Roebel 1

bull Bending propertiesbull easy way bending (out of plane)

bull at CERN (J Fleiter) R gt 4 mmbull at CERN (Jeroen) R gt 11 mm for KIT cable Studies on link between

transposition pitch and bending radiusbull at KIT

bull hard way bending (in plane)bull R gt 900 mm (J Fleiter)bull R gt 2m (Jeroen GC cable)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

7

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

ldquoField qualityrdquo accelerator cable 2bull mechanical strengthbull An issue for non impregnated Roebel cablesbull An issue for twisted stacked tapesbull Need for cable mechanical modeling

bull mechanical stabilitybull An issue for Roebel cables support impregnation

bull windability (bending radius)bull Ok for BiSCCO Rutherford cablebull To be demonstrated for YBCO cables

bull Tensile stress limitbull Bending behavior Jc degradation delamination

bull protectionbull Need for high current cable

bull Acceptable minimal value 5kA Source Calculation hypothesisbull Need for Copper stabilizer

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

5

Conductor insulation

bull Insulation candidates - YBCO cablebull Polyester coating (EuCARD HTS insert) bull Kapton bull Polyester heat shrink tubing

bull Glass fiber tape compatible with cable impregnation

bull Insulation candidate - BiSCCO cable 900 degC HT compatiblebull Glass fiber tape bull TiO2-PPC

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

6

Polyester heat shrink tubing from Advanced Polymers Inc used for Y10-04 test coil at NHMFL

Winding behavior ndash Roebel 1

bull Bending propertiesbull easy way bending (out of plane)

bull at CERN (J Fleiter) R gt 4 mmbull at CERN (Jeroen) R gt 11 mm for KIT cable Studies on link between

transposition pitch and bending radiusbull at KIT

bull hard way bending (in plane)bull R gt 900 mm (J Fleiter)bull R gt 2m (Jeroen GC cable)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

7

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Conductor insulation

bull Insulation candidates - YBCO cablebull Polyester coating (EuCARD HTS insert) bull Kapton bull Polyester heat shrink tubing

bull Glass fiber tape compatible with cable impregnation

bull Insulation candidate - BiSCCO cable 900 degC HT compatiblebull Glass fiber tape bull TiO2-PPC

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

6

Polyester heat shrink tubing from Advanced Polymers Inc used for Y10-04 test coil at NHMFL

Winding behavior ndash Roebel 1

bull Bending propertiesbull easy way bending (out of plane)

bull at CERN (J Fleiter) R gt 4 mmbull at CERN (Jeroen) R gt 11 mm for KIT cable Studies on link between

transposition pitch and bending radiusbull at KIT

bull hard way bending (in plane)bull R gt 900 mm (J Fleiter)bull R gt 2m (Jeroen GC cable)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

7

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Winding behavior ndash Roebel 1

bull Bending propertiesbull easy way bending (out of plane)

bull at CERN (J Fleiter) R gt 4 mmbull at CERN (Jeroen) R gt 11 mm for KIT cable Studies on link between

transposition pitch and bending radiusbull at KIT

bull hard way bending (in plane)bull R gt 900 mm (J Fleiter)bull R gt 2m (Jeroen GC cable)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

7

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Winding behavior ndash Roebel 2

bull Cable handling winding proceduresbull studies starting at CEAbull tension stress limit

bull From Bumby et al Failure axial tensile stress 146 MPa for the meander tape and 113 MPa for the Roebel cable (625 Mpa for the straight conductor)

bull Stress distribution between strands bull Shall we have to stop at tension stress limit of a strand

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

8

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Winding behavior - Stacked tapes

bull Bending propertiesbull easy way bending (out of plane)

bull R gt 10 mm (Jeacuterocircme Fleiter)bull hard way bending (in plane)

R gt 900 mm (Jeacuterocircme Fleiter)

bull Cable handling winding proceduresbull studies starting at CEA bull EuCARD HTS Insert

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

9

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Mechanical characterization ndash Roebelbull Transverse pressure studiesbull at CERN (J Fleiter)

bull Non homogeneous stress distribution across the length and across the section (a)

bull Measured no Ic reduction up to 45 MPa of average transverse stressbull at KIT (Bayer et al)

bull Measured 10 reversible Ic reduction starting from 14 MPa of average transverse stress (b)

bull at CERN (J van Nutgeren G Kirby)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

10

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Roebel cable impregnation

bull Transverse stress reinforcementbull Copper strips between YBCO tapes bull Cable impregnation

bull at CERNbull discussion with CTD for fillers bull ten stack test campaign contraction and thermal conductivity young

modulus contact resistance breakdown voltage of turn to turn insulation

bull at KITbull Tests on filler materials together with Twente University

bull Need for Roebel cable modelingbull Need for dummy YBCO cable to test for delamination issues

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

11

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Test coil

bull SMC type coil

bull Feather - M0 coil (Jeroen CERN)

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

12

Feather-M0Purpose - learn winding (mechanical)Standalone - 0620 T (wo iron)In background (13T) - 0620 1048744T (wo iron)Number of turns - 4Operating current - 90 kAInductance (self) - 45 microHStraight Section - 40 mm (incl layer jump)Cable length - 20 m (2 poles)ApertureOuter size - 4069 mm (Fresca-III)

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Actionsbull Conductor design (number of tapes twist pitch ) task 102bull AC-losses measurements on tapes and stacks Grenoble is checking

for tests possibilities at CRETAbull Cable transposition modeling INPGbull twist region configuration studies INPGbull Roebel cable mechanical modeling CEA or CERNbull impregnation CERN has purchased a set of different resins to

evaluate the impact onbull Mechanical reinforcement starting with stainless-steel cablebull Differential thermal contraction delamination need for YBCO cablebull Contact resistance

bull cable characterization winding testsbull mechanical tests CERNbull winding procedures tests CEA

bull quench detection system (CERN collaboration with Ramesh Gupta)bull protection start with new cables modeling

13

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Meetingsbull EuCARD2 1st Annual Meeting + Workshop on HTS for accelerators

bull DESY Laboratory in Hamburgbull Monday May 19th to Tuesday May 20th general sessionsbull Wednesday May 21st to Thursday May 22nd workshop on HTS for accelerators

bull Regular short progress meetingsbull We would like to fix a weekly meeting a window to merge studies progress done

problems need for special topics meetingsbull Do not look for everyone to be present bull A doodle to find the best daytime will be prepared by Mariabull Only design people could be involved in a first time

bull CEA Maria Durante Cleacutement Lorinbull CERN Glyn Kirby Jeroen van Nugteren (Gijs de Rijk)bull INPG John Himbele Arnaud Badel (Pascal Tixador)bull Others

bull Special topics meetingsbull Cable configurationcharacterizationbull Cable mechanical modelingbull Cable insulationbull hellip

bull Task 102 103 meeting next week ndash to be fixed

14

103

- HT

S Di

pole

des

ign

stud

ies

030

220

14

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump

Splices Layer jump

030

220

1410

3 -

HTS

Dipo

le d

esig

n st

udie

s

15

• EuCARD2 103 HTS Dipole Design Studies
• ldquoAgendardquo
• Design layouts
• ldquoField qualityrdquo accelerator cable 1
• ldquoField qualityrdquo accelerator cable 2
• Conductor insulation
• Winding behavior ndash Roebel 1
• Winding behavior ndash Roebel 2
• Winding behavior - Stacked tapes
• Mechanical characterization ndash Roebel
• Roebel cable impregnation
• Test coil
• Actions
• Meetings
• Splices Layer jump