Study on in-situ calibration for neutron monitor in the helical type fusion experimental device based on monte carlo calculations

Yuji Nakano, Atsushi Yamazaki, Kenichi Watanabe, Akira Uritani, Kunihiro Ogawa, Mitsutaka Isobe

Research output: Contribution to journalArticlepeer-review

4 Citations (Scopus)

Abstract

Monte Carlo simulations in design of neutron monitors for fusion experimental devices play an important role to evaluate the influence of scattering from various structures and to correct differences between neutron energies from calibration source and fusion plasma. We have developed an automated input file generation code based on finely segmented helical coil approximation. In this paper, we study the optimal number of divisions of segmented geometry from viewpoints of simulation precision and required calculation time. We conclude that results with more than 360 divisions saturate into the result with fully fine simulation. And we evaluate influence of neutron scattering from a miniature train, a railroad and supporting structures used in in-situ calibration experiments at LHD.

Original languageEnglish
Article number3405141
JournalPlasma and Fusion Research
Volume9
Issue numberSpecialIssue2
DOIs
Publication statusPublished - 2014
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics

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