Central Deuteron Temperature Derived from Total Neutron Emission Rate in Electron Cyclotron Heated LHD Plasmas

Kunihiro OGAWA; Mitsutaka ISOBE; Takeo NISHITANI; Hiroki KAWASE; Neng PU; LHD Experiment Group

doi:10.1585/pfr.12.1202036

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Central Deuteron Temperature Derived from Total Neutron Emission Rate in Electron Cyclotron Heated LHD Plasmas

Kunihiro OGAWA, Mitsutaka ISOBE, Takeo NISHITANI, Hiroki KAWASE, Neng PU, LHD Experiment Group

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Keywords: neutron diagnostics, total neutron emission rate, deuteron temperature, LHD

JOURNAL FREE ACCESS

2017 Volume 12 Pages 1202036

DOI https://doi.org/10.1585/pfr.12.1202036

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Abstract

Total neutron emission rate from Large Helical Device plasmas is measured by using a neutron flux monitor newly installed for deuterium operations. Deuteron temperature is derived from the total neutron emission rates in electron cyclotron heated Large Helical Device plasmas. Time evolution of central deuteron temperature obtained by the neutron flux monitor approximately agrees with central impurity ion temperature measured by the EUV spectrometer.

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