Advanced limiter test (ALT-1) in the TEXTOR tokamak: concept and experimental design
The concept and experimental design of a pump-limiter for the TEXTOR tokamak is described. The module is constructed of stainless steel with a compound curvature head designed to limit the maximum heat flux to 300 W/cm/sup 2/. The head is made of TiC-coated graphite containing a variable-aperture slot to admit plasma to a deflector plate for ballistic pumping action. The assembly is actively pumped using Zr-Al getters with an estimated hydrogen pumping speed of 3 x 10/sup 4/ 1/s. The aspect ratio of the pump duct and the length of the plasma channel are both variable to permit study of plasma plugging, ballistic scattering, and enhanced gas-conduction effects. The module can be moved radially by 10 cm to permit its operation either as the primary or secondary limiter. Major diagnostics include Langmuir and solid state probes, bolometers, infrared thermography, thermocouples, ion gauges, manometers, and a gas mass analyzer.
- Research Organization:
- California Univ., Los Angeles (USA). School of Engineering and Applied Science; Sandia National Labs., Livermore, CA (USA); Sandia National Labs., Albuquerque, NM (USA); Kernforschungsanlage Juelich G.m.b.H. (Germany, F.R.). Inst. fuer Plasmaphysik
- DOE Contract Number:
- AC04-76DP00789
- OSTI ID:
- 5905666
- Report Number(s):
- SAND-82-2342C; CONF-830924-1; ON: DE83011296
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
700209* -- Fusion Power Plant Technology-- Component Development & Materials Testing
ALUMINIUM
CLOSED PLASMA DEVICES
DESIGN
DUCTS
ELEMENTS
GETTERS
LIMITERS
METALS
TEXTOR TOKAMAK
THERMONUCLEAR DEVICES
TOKAMAK DEVICES
TRANSITION ELEMENTS
VACUUM SYSTEMS
ZIRCONIUM