Title :
Negative-ion based NBI system for JT-60U
Author :
Kuriyama, M. ; Akino, N. ; Aoyagi, T. ; Araki, M. ; Ebisawa, N. ; Fujiwara, Y. ; Honda, A. ; Inoue, T. ; Kawai, M. ; Kazawa, M. ; Koizumi, J. ; Miyamoto, K. ; Miyamoto, N. ; Mogaki, K. ; Ohara, Y. ; Ohga, T. ; Okumura, Y. ; Oohara, H. ; Ohshima, K. ; Sato
Author_Institution :
Naka Fusion Res. Establ., JAERI, Ibaraki, Japan
fDate :
30 Sep-5 Oct 1995
Abstract :
A 500 keV negative-ion based NBI system is under construction for NB current drive and plasma core heating in high density plasmas in JT-60U. Part of the beamline and the high voltage power supply required for a verification test of an ion source have completed in March 1995. After having done a high potential test of the power supply, the negative-ion generation and acceleration tests have started in June 1995 aiming at deuterium beams of 500 keV, 22 A. In initial experiment, deuterium negative-ion beams of 410 keV, 6.1 A (2.5 MW) for 0.2 sec, so far, have been achieved. This is the world highest D- current and negative ion beam power. The construction of the total system will be completed by the beginning of 1996, and the beam injection will start in March 1996
Keywords :
Tokamak devices; fusion reactor design; plasma beam injection heating; 22 A; 410 keV; 500 keV; 500 keV negative-ion based NBI system; D- current; JT-60U; NB current drive; beam injection; beamline; deuterium beams; deuterium negative-ion beams; high density plasmas; high voltage power supply; ion source; negative ion beam power; negative-ion generation; plasma core heating; verification test; Deuterium; Heating; Niobium; Particle beams; Plasma accelerators; Plasma density; Plasma sources; Power supplies; Structural beams; Testing;
Conference_Titel :
Fusion Engineering, 1995. SOFE '95. Seeking a New Energy Era., 16th IEEE/NPSS Symposium
Conference_Location :
Champaign, IL
Print_ISBN :
0-7803-2969-4
DOI :
10.1109/FUSION.1995.534267
