Operation and Development on the Positive-Ion Based Neutral Beam Injection System for JT-60 and JT-60U

Journal Article · Sun Sep 15 00:00:00 EDT 2002 · Fusion Science and Technology

OSTI ID:20845862

Kuriyama, M ^[1]; Akino, N ^[1]; Ebisawa, N ^[1]; Honda, A ^[1]; Itoh, T ^[1]; Kawai, M ^[1]; Mogaki, K ^[1]; Ohga, T ^[1]; Oohara, H ^[1]; Umeda, N ^[1]; Usui, K ^[1]; Yamamoto, M ^[1]; Yamamoto, T ^[1]; Matsuoka, M ^[2]

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1. Japan Atomic Energy Research Institute (Japan)
2. University of Mie (Japan)

The positive-ion based neutral beam injection (NBI) system for JT-60, which consists of 14 beamline units and has a beam energy of 70 to 100 keV, started operation in 1986 with hydrogen beams and injected a neutral beam power of 27 MW at 75 keV into the JT-60 plasma. In 1991, the NBI system was modified to be able to handle deuterium beams as part of the JT-60 upgrade modification. After executing some research and developments, deuterium beams of 40 MW at 95 keV were injected in 1996. As a result, NBI has contributed to the achievement of the highest performance plasmas, a DT-equivalent fusion power gain of 1.25 and a fusion triple product of 1.55 x 10{sup 21} keVs/m{sup 3}, in the world on JT-60U.

• OSTI ID: 20845862
• Journal Information: Fusion Science and Technology, Journal Name: Fusion Science and Technology Journal Issue: 2,3 Vol. 42; ISSN 1536-1055
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CATIONS
DEUTERIUM
GAIN
HYDROGEN
JT-60 TOKAMAK
JT-60U TOKAMAK
KEV RANGE
NEUTRAL ATOM BEAM INJECTION
OPERATION
PERFORMANCE
PLASMA