The liquid nitrogen and supercritical helium cooling loop for the jet pumped divertor cryopump
Conference
·
OSTI ID:47817
- JET Joint Undertaking, Abingdon (United Kingdom)
A key element for the new experimental phase of the European fusion experiment JET is a new cryopump which will be installed inside the torus in order to pump the new divertor configuration. A forced flow of liquid nitrogen and supercritical helium has been chosen for the cooling of the cryoshields and cryocondensation panels for this cryopump. The reasons for this selection are to minimize the inventory of cryogens (to minimize nuclear heating) good heat transfer conditions and minimum time for transient conditions such as cool-down, regeneration and warm-up. The flow of supercritical helium will be driven by the main compressor of the refrigerator and enhanced by a dedicated cold ejector. The peak load during the plasma pulse will be absorbed by the high thermal capacity of the bulk supercritical helium inside the cryocondensation panel.
- OSTI ID:
- 47817
- Report Number(s):
- CONF-930703--
- Country of Publication:
- United States
- Language:
- English
Similar Records
Performance of the supercritical helium cooling loop for the JET divertor cryopump
Transient thermal analysis of cryocondensation pump for JET
Transient thermal analysis of cryocondensation pump for JET
Conference
·
Mon Dec 30 23:00:00 EST 1996
·
OSTI ID:416711
Transient thermal analysis of cryocondensation pump for JET
Conference
·
Fri Dec 30 23:00:00 EST 1994
·
OSTI ID:47818
Transient thermal analysis of cryocondensation pump for JET
Conference
·
Sun Aug 01 00:00:00 EDT 1993
·
OSTI ID:10186132