lr summary and lq plan jesse schmalzle w/ contributions from: j. muratore (bnl) p. ferracin (lbnl)...

LR Summary and LQ PlanJesse Schmalzle

w/ contributions from:

J. Muratore (BNL)

P. Ferracin (LBNL)

October 18, 2007

J. Schmalzle 2October 18, 2007

LR Fabrication

Coil winding: Impregnated coil:


LR Fabrication

Coil reaction:


LR Assembly

Coil assembly:• Coils assembled into LBNL fabricated support fixture

with LBNL assistance.


LR Assembly

Structure lifting / uprighting:


LR Test ResultsLRS01 Quench Locations

0

2000

4000

6000

8000

10000

0 5 10 15 20 25 30

Quench Number

Qu

en

ch

Cu

rre

nt

(A)

Iss = 10600A (4.5K)

20 A/s 50 A/s 100 A/s 50 A

/s20

A/s

20 A

/s10

A/s

20 A

/s5

A/s

Various Locations

Inner Layer High Field (2 places)

Outer Layer

Turns 1-10

Inner Layer mostly high field

Tur

ns 1

-15

Tur

n1-2

LE

S

Inne

r La

yer

Hig

h F

ield

Inne

r La

yer

Hig

h F

ield

Tur

n 1

Tur

n

Turn 1 = pole turnTurn 21 = outermost turn0

2000

4000

6000

8000

10000

0 5 10 15 20 25 30

Upper Inner Layer

Lower Inner Layer

Upper Outer Layer

Iss

J. Muratore

IQ (max) = 91% ISS


LR Test Results

SRS01-LRS01 QUENCH PERFORMANCE

0.5

0.6

0.7

0.8

0.9

1.0

0 1 2 3 4 5 6 7 8 9 10 11 12 13

Quench Number

I /

I ss

LRS01

SRS01

J. Muratore


LR Test Results

LRS01 Ramp Rate Behavior

0

2000

4000

6000

8000

10000

12000

0 20 40 60 80 100

Ramp Rate (A/s)

Qu

en

ch

Cu

rre

nt

(A)

J. Muratore


LR Test Results

LRS01 Heater Quench Delays

0

2

4

6

8

10

12

14

16

0 10 20 30 40 50 60 70 80 90

Heater Current (A)

Del

ay (

ms)

J. Muratore


LR Test Results

LRS01 Number of Spikesin 307.2ms before quench

0

1

2

3

4

5

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31

Quench Number

Nu

mb

er o

f S

pik

es

J. Muratore


LR Test ResultsLRS01 Coil Differences with Spikes

-0.8

-0.7

-0.6

-0.5

-0.4

-0.3

-0.2

-0.1

0.1

0.2

0.3

0.4

0.5

0.6

-0.31 -0.26 -0.21 -0.16 -0.11 -0.06 -0.01

Time (s)

Vo

ltag

e (V

)

Q19

Q20

Q21

Q22

Q26

(Flux Jumps)

J. Muratore


LR Test Results

Shell shrinks more than yoke Friction limits the shell

contractions• Central part locked

Strain at 4.5 K consistent with 0.2 friction model results

During excitation e.m. forces induced slippage

Strain gauge measurement and analysis – axial strain

P. Ferracin


LR Test Results

Average of the central gauge measurements

3 cool-downs in total During dummy coil test

• At 77 K- Axial stress of 200 MPa- Azim. stress of 220 MPa

Similar stresses after first LRS01 cool-down

During excitation, sudden z slippage of the shell

• Drop of axial stress• Effect on azimuthal stress

Strain gauge measurement and analysis - axial & azimuthal stress

P. Ferracin


LRS02 Plan

Support structure shipped to LBNL for modification.• Segmented shell:

- Less axial strain- No slippage during excitation- Better control of shell ID- More uniform azimuthal stress

Modified structure and assembly tooling to be returned to BNL.

Reassemble using the original coils.• Attempt to repair spot heaters before reassembly.

Cold test.


LRS02 Status

P. Ferracin

New gauges replaced all old gauges• 5 stations (left-right and T-Z)• Lead end + center of each segment.

Shell cut into four segments.• Pin holes included to align

segments .• Segments misaligned after cut.• Bladder operation will conform

shell ID to yoke OD.


LRS02 Status

P. Ferracin

Status• Structure disassembled• Shell cut in four segments• New instrumentation attached (20 gauges)

Next steps • Measurements of the gauge offsets• Yoke insertion and slight preload of the shell• Dummy coil pack insertion• Ship structure to BNL


LQ Plan

Fabricate two sets of reaction/impregnation fixture to FNAL drawings:• Adapt tooling for use at BNL:

- Use existing assembly table with new standoffs to support fixture.

- Use existing LR beams to lift and flip fixture.- Fabricate coil lead solder fixtures to FNAL drawings.- Add heaters for impregnation in vacuum tank.- Use existing vacuum tank and top plate with modified

hanging brackets for vertical impregnation.

Design and procure instrumentation circuits.


LQ Plan

React and impregnate practice coil:• Coil to be wound and cured at FNAL and shipped to BNL.• Perform electrical checks and visual inspection, then cut up

coil for further inspection.

React and impregnate LQ coils.• Coils to be wound and cured at FNAL and shipped to BNL.

Assemble coils into shell and bladder structure.• Structure and assembly tooling to be fabricated at LBNL.

Ship coils to FNAL in react / impregnation fixture for (later) assembly into collar support structure .

lr summary and lq plan jesse schmalzle w/ contributions from: j. muratore (bnl) p. ferracin (lbnl)...

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