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S. Caspi, LBNL HQ Progress and Schedule Shlomo Caspi LBNL LARP Collaboration Meeting – CM13 Port Jefferson November 4-6, 2009

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Text of S. Caspi, LBNL HQ Progress and Schedule Shlomo Caspi LBNL LARP Collaboration Meeting – CM13...

Indirect Rates*
1. Nb3Sn Technology - TQ
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Magnetic design:
Pre-stress, cool-down, power
BNL - Coil reaction, instrumentation, and impregnation.
FNAL – Magnetic design, end spacers design and fabrication.
LARP CM 13, Port-Jefferson November 4-6, 2009
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Maintain full azimuthal contact between coil-island and collar
Bladder and key locations to balance layers pre-stress
Shell based Aluminum structure - final pre-stress during cool-down
LARP CM 13, Port-Jefferson November 4-6, 2009
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A/mm2
3000
T/m
199/219
kA
17.7/19.5
T
13.9/15.2
MJ/m
1.4
MN/m
-1.92/-3.2
MN
1.4
Axial pre-load
Azimuthal pre-load
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HQ - Average Azimuthal Stress
Average stress in HQ is 140 MPa but local stress expected to exceeds 200 MPa
LARP CM 13, Port-Jefferson November 4-6, 2009
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Field Quality - With Lorentz forces at 219 T/m
LARP CM 13, Port-Jefferson November 4-6, 2009
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Layer 2: heat diffusion + propagation = 20 ms
- Coverage = 60 %
Dump R = 50 mohm
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Reaction Tooling
Impregnation Tooling
LARP CM 13, Port-Jefferson November 4-6, 2009
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Unit Length (one coil layers 1 & 2, 81m net )
Add 19m of lead = 100m or 16Kg/UL
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HQ Coil Status
Practice coils 1 and 2 completed, PC1 instrumented ready for mirror test.
Coil 3 - start reaction November 9 (LBNL)
3 – Impregnation complete December 11 (LBNL)
Coil 4- ready for reaction (BNL)
4 - Impregnation complete December 23 (BNL)
Coil 5 – Wind and cure complete November 16 (LBNL)
5 – start reaction Dec 7 2009 (LBNL)
5 – Impregnation complete January 30 2010 (LBNL)
Coil 6 – Wind and cure complete December 23 (LBNL)
6 – Start reaction January 8 2010 (BNL)
6 – Impregnation complete February 14 2010 (BNL)
[email protected]
Collars assembly completed (LBNL).
HQ cool-down test (dummy coils) January 2010 (LBNL)..
HQ01a final assembly March 1 2010 (LBNL)..
HQ01a test March 15 2010 (FNAL).
[email protected]
HQ Summary
A 120 mm bore, Nb3Sn quadrupole for Phase II is under construction
With a current density conductor of 3000 A/mm2 (12 T, 4.2 K) the magnet is expected to reach 15 T at 1.9 K (219 T/m)
The magnet is optimized for alignment and field quality
Assembly and pre-stressed with an outer Aluminum shell and “key and bladder” technology.
Final assembly and testing Q2 2010.
LARP CM 13, Port-Jefferson November 4-6, 2009
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