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

Volume

1

fYear

1995

fDate

30 Sep-5 Oct 1995

Firstpage

491

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;

fLanguage

English

Publisher

ieee

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

Type

conf

DOI

10.1109/FUSION.1995.534267

Filename

534267