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Liquid xenon cryogenic system at KEK

Liquid xenon cryogenic system at KEK. LXe cryogenic system at KEK. June 2008. Purification. P 2. PT 2. V7. P 3. Circulation Pump (max:20L/min). PT 3. V9. V6. V5. V8. m. SV. V12. P 1. V13. V1. V2. V23. V11 needle. PT 1. V10. P 4. V14. V3. V4. Heat exchanger. V22.

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Liquid xenon cryogenic system at KEK

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  1. Liquid xenon cryogenic system at KEK

  2. LXe cryogenic system at KEK June 2008 Purification P2 PT2 V7 P3 Circulation Pump (max:20L/min) PT3 V9 V6 V5 V8 m SV V12 P1 V13 V1 V2 V23 V11 needle PT1 V10 P4 V14 V3 V4 Heat exchanger V22 V21 V18 V20 V15 PTC V16 V19 V17 PT4 SAES Getter Monotor Tch T3 TPC 0.75m3 Tank T2 Xe cylinder T1 Recovery Bottle(3.75L) V24 Heater Liquid volume ~1.5L

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

  4. Cooling test of miniature PT Cryocooler -PTRPDC08（8W at 77K：Iwatani） -Air cooled compressor (700W at 50Hz） -20W at 147K confirmed →24W at 165K

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

  6. Summary and plan 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

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