Helium exhaust and transport studies with the ALT-II pump limiter in the TEXTOR tokamak
The first encouraging experiments demonstrating direct, explicit control of the He(2+) density in a tokamak plasma have been performed in the TEXTOR tokamak with the Advanced Limiter Test-II pump limiter. Helium, injected in a short gas puff from the outside of the plasma, is observed to reach the plasma core, and then is readily removed from the plasma. An exhaust efficiency of about 8% is obtained. Active charge-exchange spectroscopy is used to study the exhaust and transport of He(2+) within the plasma, and the density evolution is modelled with a diffusive-convective transport code.
Bibliographic Reference: Article: Physical Review Letters, Vol. 65 (1990) No. 19, pp. 2382-2385
Record Number: 199110167 / Last updated on: 1994-12-02
Original language: en
Available languages: en