Recent development of neutron and energetic-particle diagnostics for LHD deuterium discharges

Abstract An integrated set of neutron diagnostics developed for the deuterium operation of the Large Helical Device (LHD) has been revealing behavior of energetic ions in three-dimensional plasmas, together with energetic-particle diagnostics. In order to obtain deeper understanding of physics relat...

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Bibliographic Details
Published inJournal of instrumentation Vol. 17; no. 3; p. C03036
Main Authors Isobe, M., Ogawa, K., Sangaroon, S., Kamio, S., Fujiwara, Y., Osakabe, M.
Format Journal Article
LanguageEnglish
Published Bristol IOP Publishing 01.03.2022
Subjects
Chemical vapor deposition
Deuterium
Diamonds
Discharge
Energy distribution
Ions
Neutral particles
Nuclear instruments and methods for hot plasma diagnostics
Plasma diagnostics
Plasma diagnostics — charged-particle spectroscopy
Plasmas (physics)
Single crystals
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Summary:Abstract An integrated set of neutron diagnostics developed for the deuterium operation of the Large Helical Device (LHD) has been revealing behavior of energetic ions in three-dimensional plasmas, together with energetic-particle diagnostics. In order to obtain deeper understanding of physics related to energetic ions in the LHD, development of plasma diagnostics that can provide energy distribution of energetic ions is now being accelerated. Recent advances in development of the D-D neutron energy spectrometer, a neutral particle analyzer based on a single-crystal chemical vapor deposition diamond, and a tangential fast-ion D α diagnostic for deuterium discharges of the LHD are described.
ISSN:1748-0221
1748-0221
DOI:10.1088/1748-0221/17/03/C03036