Development of a fast valve for mitigating disruptions in tokamaks

Savtchkov, A.; Mank, G.; Finken, K. H.

doi:10.1063/1.1505106

Journal Article

PreJuSER-23462

Development of a fast valve for mitigating disruptions in tokamaks

Savtchkov, A.FZJ* ; Finken, K. H.FZJ* ; Mank, G.FZJ*

2002
American Institute of Physics [S.l.]

Review of scientific instruments 73, 3490 - 3493 (2002) [10.1063/1.1505106]

This record in other databases:

Please use a persistent id in citations: http://hdl.handle.net/2128/1746 doi:10.1063/1.1505106

Abstract: In support of our disruption mitigation profram, a fast gas valve has been constructed and tested on TEXTOR at FZJ Juelich. Its main features have been shown to be: (1) rapid response time: 0.5 ms; (2) amount of injected gas: variable, 2-1000 mbarxl; (3) linear dependence of the number of injected particles on the gas pressure; (4) capability of working in a strong magnetic field; (5) sort of gas: any. The valve has the standard CF 35 flange, commonly used in vacuum engineering. All the components that have contact with vacuum were made of stainless steel, except for the closing aluminum piston. To prevent gas leaking directly from the bottles to the experimental vessel there are also two safety valves, closing the bottles before the shot. The required control equipment includes a high power supply and the combined controller for the safety valves and baratrons, both being able to work with TTL control signals. During tests and experiments on TEXTOR and ASDEX-Upgrade, the valve showed successful operation with three gas types: He, Ne, Ar. (C) 2002 American Institute of Physics.

Keyword(s): J

Classification:

Note: Record converted from VDB: 12.11.2012

Contributing Institute(s):