Internal review of superconductors and magnet laboratories 2nd part: Infrastructure/Laboratories Cryogenics Klaus Barth (CERN), Vladislav Benda (CERN)

Cryogenics Infrastructure for Test Areas SM18 LHC Magnet and Cavity Test Facility 4.5K, 1.9K: CCU + WPU, Precooler, GHe recovery infrastructure Meyrin Site LHC Cable Test Facility, Bldg. 163 Sulzer Chemtech liquefier 5 g/s LHe, 1.9K: WPU, GHe recovery infrastructure Prevessin Site Block 4 Magnet Test Facility Sulzer SNA g/s, 1.9K: WPU Meyrin West Area Former ATLAS Test Facility Sulzer TCF 200 mod K, no 1.9 K, LHe forced flow with centrifugal pumps (80 – 1200 g/s)

SM18 LHC Magnet and Cavity Test Facility External Cryogenics Compressor Refrigerator: STAL S93-26 (1/5bar), S75-26 (1/5bar), S73/26 5/20 bar) MW(3.3kV), 30 kW (380V), 0.4 kW (24V) Cold BoxLinde K, as liquefier: approx. 25 g/s Design: K, 3 80K, 8 g/s LHe 1.9 K Stage: CCU 1 + (CCU 2 not connected) WPU 1/2: Leybold 4x SV1200, RA3001, RA13000, RA 16000; 420 kW Heater WPU: 70 kW LN2 precoolerPrecooler: 3 KAESER FS440, bar, 250 kW Tcontrol & Warm-up heaters: 330 kW Proximity Cryogenics Valve Boxes Distribution outlets magnet testbenches, cavities, STRING, GREC Dewar LHe dewar Cryostats12 Magnet Test Bench Infrastructure Recovery Compressor3 x Sulzer Burckhardt 120 m3/h, 200 bar, 40 kW Purifier2 x Linde Purifier, 200 m3/h, bar Balloons/ Gazometers 5 x 80 M3 LN2 reservoir52'620 l Control Systemexternal cryogenics: CP, CB & infa.: ABB Magnet Test benches: PCVUE32 WPU1: Siemens S5 PLC -> S6 PLC 3.3 kV V1.2 MW CV Operation FSU420 kCHF/year Maintenance C kCHF/year

Cryolab Zone + Sc Cable Test Facillity External Cryogenics CompressorBldg. 163: KAESER FS440, bar, 250 kW Bldg. 165: KAESER FS440, bar, 250 kW Cold Box Bldg. 165: SULZER TCF 50, 2.5 g/s Lhe Bldg. 163: SULZER Chemtech, 5.5 g/s Lhe (Dewar boost), T1 filter clocking (10kCHF) 1.9 K Stage: Bldg. 163: 6 Leybols SV300, 280 m3/h, 0.7 mbar, 6 kW Bldg. 165 (FRESCA): ALCATEL pump, 45 kW primary 340L: 2x 400m3/h + roots RHV 3000: 3000 m3/h LN2 precoolerNo Proximity Cryogenics Valve BoxesDistribution VB Dewar6000l Lhe Dewar (FRESCA ) Cryostats7 cable cryostats + FRESCA double cryostat Infrastructure Recovery Compressorbldg. 253: 1 x Greenfield (400 m3/h), 200 bar, 120 kW 1 x Bauer 80 m3/h, 150 bar Purifierbldg. 243: 2 x Linde Purifier, 200 m3/h, bar Balloons/ Gazometersbldg. 253: 2x 10 m3 + 1 x 20 m3 LN2 reservoir42'000 l Control Systembldg. 163: ABB -> UNICOS week 28 (2009) bldg. 165: UNICOS bldg. 243/253 GHe managment: UNICOS V0.8 MW CV Operation FSU210 kCHF/year Maintenance C16975 kCHF/year

Prevessin Site Block 4 Magnet Test Facility North Area - Block 4 Bldg. 895, Prevessin Site External Cryogenics CompressorGHH Rand bar HP/1.55 BP, 426kW Cold BoxSNA, 5-6 g/s LHe 1.9 K Stage:ALCATEL? Warm pump ? ? g/s LN2 precoolerNo Proximity Cryogenics Valve BoxesDistribution VB Dewar2500 l Lhe Dewar Cryostats4? Infrastructure Recovery Compressor Bldg. 895, 100 m3/h, 150 bar, 40 kW Purifier HP (pure/impure) Ghe connection to Cryolab Balloons/ Gazometerslocal balloon 20 m3 + 8 x 80 m3 (EHN1) LN2 reservoir20'000 l Control SystemControl GHH CP in UNICOS Control Cold Box in ABB V0.6 MW CV Operation FSU105 kCHF/year Maintenance C16925 kCHF

Meyrin West Area Former ATLAS Test Facility West Area ATLAS Magnet Test Station Bldg. 180/279, Meyrin Site External Cryogenics Compressor He plant: Sulzer Piston Compressor 165 g/s, 15/1.02 bar, 510 kW Cold BoxSulzer 1.2 LN2 precooling 1st HX possible 1.9 K Stage: LN2 precooler10 kW LN2 (LN2 reservoir missing) STAL compressor S-26, 50 g/s, 18/1 bar, 160kW Proximity Cryogenics Valve BoxesDistribution VB for 3 Test Benches (2 BT, 1 ECT) Dewar CryostatsLHe centrifugal pumps cyostat, 80 g/s, 600 g/s and 1200 g/s dP=300 mbar Infrastructure Recovery CompressorMembrane compressor ? PurifierMP (pure/impure) GHe connection to Cryolab Balloons/ Gazometersballon BEBC (big leak?) LN2 reservoirtaken to ATLAS/P1 Control SystemABB control system V0.7 MW CV Operation FSU105 kCHF/year Maintenance C kCHF/year ( > 6000 h), 25 kCHF (< 6000 h)