PARTICLE REMOVAL CAPABILITIES OF THE TOROIDAL PUMP LIMITER ALT-II - POLOIDAL ASYMMETRIES AND ICR HEATING
ALT-II is a segmented toroidal belt pump limiter in TEXTOR used to investigate experimentally the question of particle removal capability in this configuration. Experimental results from two effects are presented - the influence of poloidal plasma flow and density decay length asymmetries, and the impact of ICR heating. The exhaust efficiency, extrapolated from the presently available two pumping units to the full action of eight pumping units, reaches up to 8%. The dependence of particle removal on plasma density and on radial limiter position is briefly discussed. An evaluation of proposed design modifications shows that exhaust efficiencies of 15-20% may become achievable with this pump limiter configuration.
Bibliographic Reference: EXTRACT: PROCEEDINGS OF THE TWELFTH INTERNATIONAL CONFERENCE ON PLASMA PHYSICS AND CONTROLLED NUCLEAR FUSION RESEARCH, VOL. 1 (1989) PP. 453-460, INTERNATIONAL ATOMIC ENERGY AGENCY, VIENNA (AT)
Record Number: 1989128088900 / Last updated on: 1990-11-01
Original language: EN
Available languages: en