Liquid xenon cryogenic system at KEK. LXe cryogenic system at KEK Xe cylinder Recovery Bottle(3.75L) SAES Getter Monotor 0.75m 3 Tank Circulation Pump.

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Presentation transcript:

Liquid xenon cryogenic system at KEK

LXe cryogenic system at KEK Xe cylinder Recovery Bottle(3.75L) SAES Getter Monotor 0.75m 3 Tank Circulation Pump (max:20L/min) P3P3 P2P2 P1P1 m TPC PTC Heat exchanger Liquid volume ~1.5L P4P4 V13 V14 V15 V10 V12 V3V4 V11 needle V8 V9 V6V5 V7 V1V2 V21 V22 V20 V17 V16 V18 V19 V23 V24 SV PT 4 PT 1 PT 2 PT 3 T ch Heater T1T1 T2T2 T3T3 June 2008 Purification

Gas handling panel 0.75m3 Tank PT Cryocooler Test chamber 700W compressor LXe Cryogenic system at KEK

Cooling test of miniature PT Cryocooler -PTR PDC08 （ 8W at 77K ： Iwatani ） -Air cooled compressor (700W at 50Hz ） -20W at 147K confirmed →24W at 165K

Cooling, Liquefaction, Pump circulation test PT100 50mm 10mm Foil heater Results: - 19 hrs for 1.2L liquefy by PT cryocooler only - ~0.16L/h liquefaction speed - ~2 L/min of pump circulation for purification

New cryogenic system for LXe experiments at KEK: - For basic investigation of LXe properties - All-round studies on impurity - Verify LXe purification technique - Technology to handle a large amount of LXe in future Summary and plan