Helium Distribution in SM18 RF

Horizontal Test Bunker M9

T. Koettig, BE-RF-SRF 1st Aug 2013

• Layout of the SM18 RF test area

• New cryogenic infrastructure => commissioning is ongoing

• M9 clients and requirements

• Proposal for the new Interconnection Valve Box

Content

3

M7 M9

V3 V4 V5 V6

Cryo Infra Upgrade of SM18 RF TFRF TEST FACILITY AREA

TRANSFER LINE GALLERY

6 kW L in de C r yo pl an t

25 m3 Dewar 1.6 bara sat. LHe

to WPU2

LP/RECUP return

He Guards

The 6 kW Linde cold boxCapacity: 25 g/s (720 l/h) of LHe

4

Cryo Infra Upgrade: 3D-layout

M92 K - 4.5 K

V32 K

M72 K

V42 K V5

4.5 K V64.5 K

5

SM18 RF TF : General PID for 2013

M9 - Service module

Warm pumping unit capacity:

• 6 g/s @ 10 mbar• 12 g/s @ 20 mbar• 18 g/s @ 30 mbar

Very low pressure heater:

32 kW (20 g/s)

- LHC temporary connection with semi rigid bayonets: LHe supply and GHe return, 4.5 K operation, 80 % reused

later.

- Hie-Isolde CMspecial procedures for cool down and warm up, 4.5 K operation + shield cooling at 50 K.Two Venturi flow meters

- CRAB cavity CM operation at T< 2 K, shield maybe at 80 K?Helium guard, Pressure relief devices: SV at 1.8 bara, RD at

2.2 bara

Functional specs for He distribution in M9 can be found in EDMS:https://edms.cern.ch/document/1279849/1

Requirements of customers in M9

PID M9 helium distribution

M9 detail: new Interconnection Valve Box

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Test schedule in SM18 RF : horizontal bunkers

Projects:

• 1 test @ 4.5K of LHC cryo module . Provisional schedule : 2013

• 2 tests @ 4.5 K of HIE-Isolde cryomodule. Provisional schedule : 2014

• 1 test @ 1.8 K of SPL half cryomodule. Provisional schedule : 2014

• x tests @ 2K of crab cavity CM. Provisional schedule : 2nd half of 2015

Thank you very much for your attention

Venturi Flow meter:

Cavity circuit at 4.5 K vaporShield circuit at 75 K gas

Venturi Flow meter

Cavity circuit at 4.5 K vapor Shield circuit at 75 K gas

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SM18 RF TF : bunkers PID for 2013

QLKRF_M7 @ 1.8 KQLKRF_M9 @ 1.8 K – 4.5 K