Development of multichannel low-energy neutron spectrometer

Y Arikawa; T Nagai; Y Abe; S Kojima; S Sakata; H Inoue; M Utsugi; Y Iwasa; T Murata; N Sarukura; M Nakai; H Shiraga; S Fujioka; H Azechi

doi:10.1063/1.4895826

Development of multichannel low-energy neutron spectrometer

Rev Sci Instrum. 2014 Nov;85(11):11E125. doi: 10.1063/1.4895826.

Authors

Y Arikawa¹, T Nagai¹, Y Abe¹, S Kojima¹, S Sakata¹, H Inoue¹, M Utsugi¹, Y Iwasa¹, T Murata², N Sarukura¹, M Nakai¹, H Shiraga¹, S Fujioka¹, H Azechi¹

Affiliations

¹ Institute of Laser Engineering, Osaka University, 2-6 Yamada-oka, Suita, Osaka, Japan.
² Kumamoto University, 2-40-1 Kurokami, Kumamoto 860-8555, Japan.

PMID: 25430304
DOI: 10.1063/1.4895826

Abstract

A multichannel low-energy neutron spectrometer for down-scattered neutron (DSN) measurements in inertial confinement fusion (ICF) experiments has been developed. Our compact-size 256-channel lithium-glass-scintillator-based spectrometer has been implemented and tested in ICF experiments with the GEKKO XII laser. We have performed time calibration of the 256-channel analog-to-digital convertor system used for DSN measurements via X-ray pulse signals. We have clearly observed the DD-primary fusion neutron signal and have successfully studied the detector's impulse response. Our detector is soon to be implemented in future ICF experiments.