[Table of Contents]

Plasma and Fusion Research

Volume 3, 058 (2008)

Rapid Communications

Discriminating Acquisition of 15-MeV Protons from D-3He Fusion Reaction in LHD
Tsuguhiro WATANABE, Junichi MIYAZAWA, Hiroshi YAMADA, Sadayoshi MURAKAMI1), Suguru MASUZAKI, Masaki OSAKABE, Mitsutaka ISOBE, Masayuki TOKITANI and Osamu MOTOJIMA
National Institute for Fusion Science, Oroshi, Toki 509-5292, Japan
1)
Kyoto University, Department of Nuclear Engineering, Kyoto 606-8501, Japan
(Received 28 May 2008 / Accepted 19 August 2008 / Published 27 October 2008)

Abstract

Discriminating acquisition of 15-MeV protons is possible in LHD D-3He experiments (D+ beam to 3He plasma), due to the nonaxisymmetric structure of the magnetic field and the ultra-high energy of the fusion products. The collisionless orbits of D-3He fusion products are studied numerically in the standard magnetic field configuration of LHD. Three sets of fusion product acquisition systems are installed in LHD and numerical computations show the possibility of discriminating between fusion products and plasma particles. The acquisition rate of 15-MeV protons is expected to be in the range of 12 ∼ 28 %.

Keywords

LHD, D-3He, 15-MeV proton, nuclear fusion energy

DOI: 10.1585/pfr.3.058

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This paper may be cited as follows:

Tsuguhiro WATANABE, Junichi MIYAZAWA, Hiroshi YAMADA, Sadayoshi MURAKAMI, Suguru MASUZAKI, Masaki OSAKABE, Mitsutaka ISOBE, Masayuki TOKITANI and Osamu MOTOJIMA, Plasma Fusion Res. 3, 058 (2008).