Experimental investigations of helium cryotrapping by argon frost

Conference · Sun Mar 01 00:00:00 EST 1992 · Fusion Technology; (United States)

OSTI ID:5129901

Mack, A; Perinic, D ^[1]; Murdoch, D ^[2]; Boissin, J C ^[3]

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1. Karlsruhe Nuclear Research Center, P.O. Box 3640, W-7500 Karlsruhe (DE)
2. NET-Team, W-8046 Garching (DE)
3. L'Air Liquide, F-38360 Sassenage (FR)

At the Karlsruhe Nuclear Research Centre (KfK) cryopumping techniques are being investigated by which the gaseous exhausts from the NET/ITER reactor can be pumped out during the burn-and dwell-times. Cryosorption and cryotrapping are techniques which are suitable for this task. It is the target of the investigations to test the techniques under NET/ITER conditions and to determine optimum design data for a prototype. They involve measurement of the pumping speed as a function of the gas composition, gas flow and loading condition of the pump surfaces. The following parameters are subjected to variations: Ar/He ratio, specific helium volume flow rate, cryosurface temperature, process gas composition, impurities in argon trapping gas, three-stage operation and two-stage operation. This paper is a description of the experiments on argon trapping techniques started in 1990. Eleven tests as well as the results derived from them are described.

• OSTI ID: 5129901
• Report Number(s): CONF-910920-; CODEN: FUSTE
• Journal Information: Fusion Technology; (United States), Vol. 21; Conference: 4. topical meeting on tritium technology in fission, fusion, and isotopic applications, Albuquerque, NM (United States), 29 Sep - 4 Oct 1991; ISSN 0748-1896
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
Ma
HELIUM
CRYOPUMPS
ITER TOKAMAK
EXHAUST GASES
NET TOKAMAK
ARGON
EXPERIMENTAL DATA
GAS FLOW
IMPURITIES
OPTIMIZATION
PUMPING
TESTING
TOLERANCE
TRAPPING
CLOSED PLASMA DEVICES
DATA
ELEMENTS
EQUIPMENT
FLUID FLOW
FLUIDS
GASEOUS WASTES
GASES
INFORMATION
LABORATORY EQUIPMENT
NONMETALS
NUMERICAL DATA
PUMPS
RARE GASES
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
VACUUM PUMPS
WASTES
700480* - Fusion Technology- Component Development
Materials Studies- (1992-)