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LXe Refrigeration/Purification STATUS

LXe Refrigeration/Purification STATUS. KEK Tom HARUYAMA. Pulse tube refrigerator Liquid phase purification. 2003.2.3 PSI Collaboration Meeting. 1.PULSE TUBE REFRIGERATOR -Heat Load-. 2003.2.3 PSI Collaboration Meeting.

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LXe Refrigeration/Purification STATUS

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  1. LXe Refrigeration/Purification STATUS KEK Tom HARUYAMA Pulse tube refrigerator Liquid phase purification 2003.2.3 PSI Collaboration Meeting

  2. 1.PULSE TUBE REFRIGERATOR-Heat Load- 2003.2.3 PSI Collaboration Meeting

  3. 1.PULSE TUBE REFRIGERATOR-KEK in-house coaxial pulse tube refrigerator- 70 W @165K 2.2 kW compressor 2.2 Hz operation COP ~3% 2002.2.3 PSI Meeting

  4. 2003.2.3 PSI Collaboration Meeting 1.PULSE TUBE REFRIGERATOR-Cooling power at 2.2/4.8kW compressor-

  5. PULSE TUBE REFRIGERATOR DEVELOPMENT-KEK in-house U-shape pulse tube refrigerator-

  6. PULSE TUBE REFRIGERATOR DEVELOPMENT-KEK in-house U-shape pulse tube refrigerator- -COP~3% -R&D is going on for better performance

  7. 2003.2.3 PSI Collaboration Meeting 1.PULSE TUBE REFRIGERATOR -Cooling power vs compressor input power-

  8. PULSE TUBE REFRIGERATOR -6.5kW compressor- 2003.2.3 PSI Collaboration Meeting

  9. PULSE TUBE REFRIGERATOR DEVELOPMENT-For final calorimeter- 1. Coaxial -Highly reliable by LP experience -Enough cooling power 2. U-shape -Not too much improvement -Still under R&D for large power -Fabricate two coaxial pulse tube refrigerator -One for main cryostat, one for spare or for storage dewar

  10. 2003.2.3 PSI Collaboration Meeting 2.PURIFICATION SCHEME -Present gas purification- -10L/min diaphragm pump -1.2L/h LXe →100hours for 120L circulation

  11. 2.PURIFICATION SCHEME -Liquid pump- Commercially available -Barber-Nichols Inc. centrifugal pump -100L/h, ~0.1Mpa -applied to 9000L Kr calorimeter at CERN (1000L/h, 0.2MPa) 2. Hand made pump in Japan under R&D -centrifugal pump -using immersible DC motor (contamination?) - 10-50L/h, ~0.1MPa 2003.2.3 PSI Collaboration Meeting

  12. 2003.2.3 PSI Collaboration Meeting 2.PURIFICATION SCHEME -For liquid purification concept-

  13. SUMMARY 2003.2.3 PSI Collaboration Meeting Pulse tube refrigerator fabrication for the final calorimeter system will be stared soon Effective liquid purification scheme will be established

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