DEVELOPMENTS IN NEUTRAL INJECTION HEATING
Performance data obtained from hydrogen injectors developed for auxiliary heating in JET are given. The injectors have operated at 80 kV with a current of 60 A for pulse lengths of 5 seconds. This beam energy is close to the limit at which positive ion systems are acceptably efficient, owing to the rapid decrease of the charge exchange cross-section with particle kinetic energy. Higher energy beams may be produced using negative ion beams, due to the large cross-section for electron detachment. An H source based on volume production in a hydrogen gas discharge is being developed to meet future needs.
Bibliographic Reference: 10TH INTERNATIONAL CONFERENCE ON PLASMA PHYSICS AND CONTROLLED NUCLEAR FUSION RESEARCH, LONDON (UK), SEPT. 12- 19, 1984 PUBLISHED BY IAEA, WIEN (AUSTRIA), 1985, VOL. 3, PP. 319-327
Record Number: 1989124027600 / Last updated on: 1987-01-01
Available languages: en