WP6 Meeting 1

Status of DFA + link to Q6 in point 7

5.3.2014

Délio Ramos, WP6 meeting, 5.3.2014

Outline• Naming• Visit to point 7• Base concept and

approach• Time scale

Naming Proposal

DFHA DFHM DFHX

Q7 DFA Q6 Q5 Q4 CC D2 D1 DFX LCXF Q3 Q2 Q1

DFM

DSH

DSH A [A-F]B [A-

F]C [A-

B]D [A-

D]E [A-

F]F [A-

D]G [A-

B]H [A-

F]

DSL (as today, extended for D2?)

DFHA [A-H] (or [A-P]?)DFHM idemDFHX [A-D]

DFA [A-P]DFM [A-P]DFX [A-H]5.3.2014 WP6 Meeting

Sami Chemli

2

In point 7 the DFM function may be

integrated into the DFA

WP6 Meeting 3

Point 7 Left

5.3.2014

Site visit organised by J-P Corso, 26.11.2013

DF

BA

WP6 Meeting 45.3.2014

Point 7 Left Site visit organised by J-P Corso, 26.11.2013

Shi

eldi

ngR

esis

tors

DF

BM

Sho

rt li

nk

DF

BM

-Q6

5.3.

2014

WP6 Meeting 5

• The 17 K limit for the MgB2 link allows only the 5 K, 3.5 bar helium from

line C as coolant.• The link will be cooled by helium gas created by evaporating the liquid

helium in the spice box.• Thermal shield solution not shown.• Either with 20 K, or with 70 K gas.

Current Base concept (all sites)

Helium from line C

Helium at max. 17 KUdo W

agner

WP6 Meeting 6

Minimum change approach• Minimise work in the tunnel

• Assemble and test before LS2 starts• Aim for installation within short time slot (radiation

cooldown time may be long..)

• Remove HCM only and replace with DFA• Keep 2x13 kA leads in current position• Keep cryo jumper in current position• Vertical link connection• Keep existing support beam and shuffling module

• Remove DFBMH and link Q6 to DFA• Possibly with no changes to Q6 QQS and jumper• Link routed above QRL

5.3.2014

WP6 Meeting 7

Point 7 Left

5.3.2014

ST0053741_13

LH

CD

FB

M_

00

03

LH

CD

FB

A_

00

10

WP6 Meeting 8

LH

CD

FB

A_

00

10

Point 7 Right

5.3.2014

ST0296494_07

LH

CD

FB

M_

00

03

WP6 Meeting 95.3.2014

SpliceKeep jumper and 13 kA leads in same location

to avoid changes in power cables and cryo

distribution

4x600 A

52x600 A

DFA to Q6 in NbTiSupercritical He because of

changes in level

48x600 A

WP6 Meeting 10

Implementing a DSL inspired solution for the link to Q6

5.3.2014

Outlet from link expanded in DFA to

produce saturated liquid

Supercritical He cooled, NbTi link

WP6 Meeting 11

Matching section IR7 left

5.3.2014

remove

To shield links

For Q6 link, 13 kA and MgB2

Replace

New module must have line E and CL

WP6 Meeting 12

DFBAM 7 Left

5.3.2014

Inlet for shield of arc cryostat

Supply to 1.9 K static bath

WP6 Meeting 13

DFBMH

5.3.2014

For Q6 link, 13 kA and MgB2

To shield links

WP6 Meeting 14

Link shield 20 K inlet with existing jumpers and valves

5.3.2014

Q6, 4.5 K

N line, 1.9 K

M line, 1.9 K

NbTi, 4x600A

MgB2, 52x600A +spares?

MgB2-NbTi splices

NbTi, 48x600A

WP6 Meeting 15

Link shield 70 K inlet

5.3.2014

Q6, 4.5 K

N line, 1.9 K

M line, 1.9 K

WP6 Meeting 16

Typical time scale• From an established concept to ready for tendering

documentation: 1 year (usually more...)• Tendering: 6 months• Fabrication: 1 year• Ready for installation: + 6 months (possibly more if cold

tested)• i.e. 3 years minimum • We should start now:

• Agree on the cooling scheme• Validate integration in the tunnel (links and DFA)• Determine piping dimensions and extent of modifications to QRL

and Q6• Start the DFA and Q6 link mechanical design

5.3.2014