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Recent Progress of Neutron Spectrometer Development for LHD Deuterium Plasmas
Plasma and Fusion Research
The commissioning of three different types of D-D neutron energy spectrometer has been performed in the Large Helical Device (LHD) to accelerate energetic-ion physics studies in a non-axisymmetric system. Because the LHD is equipped with negative-ion-source-based tangential neutral beam injectors (N-NBs) characterized by high energy up to 180∼190 keV, a significant Doppler shift of D-D neutron energy from 2.45 MeV is expected. Two different compact neutron energy spectrometers, i.e., adoi:10.1585/pfr.17.2402008 fatcat:diz7rsog7vds3azzmhowdvwjxu