Abstract
Abstract Three compact neutron emission spectrometers (CNESs) based on the novel inorganic scintillator Cs2LiYCl6:Ce with 99% 7Li-enrichment (CLYC7) were newly installed in different lines of sight in the Large Helical Device (LHD) to study the anisotropy of the velocity distribution of the beam ions. Neutron energy spectra measurements using multi-sightline CNESs were performed under neutral-beam (NB)-heated deuterium plasma. A significant Doppler shift of the deuterium-deuterium (D-D) neutron energy induced by different NB heating and different lines of sight was observed. The measured peak neutron energies were nearly consistent with those calculated by the simple two-body kinematics of the D-D reaction using the tangency radii of CNESs and NBs. These results demonstrated the capabilities of the CNESs for neutron energy spectra measurements and the study of fast-ion physics in magnetic confinement fusion research.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
