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先進プラズマ研究開発

14 MeV Neutron Detectors

掲載日:2018年12月26日更新
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Objectives

Tritons of 1.0 MeV produced in the d(d,p)t reaction slow down and may undergo a DT fusion reaction, emitting 14 MeV neutron(triton burnup). The behavior of 1 MeV tritons is important to predict the properties of D-T produced 3.5 MeV alphas because 1 MeV tritons and 3.5 MeV alphas have similar kinematics properties.
14 MeV neutron emission rate is measured for the triton burnup study aiming prediction of the alpha particle behaviors.

Detectors

Scintillation fiber detector develped by the Los Alamos National Laboratory

detector
[Photograph]

Specifications

・Time resolution : 10 ms
・Dynamic range : 0 ~ 107 counts/s  
・Position : 3 channels in front of the horizontal port of P-9 sections
1 channel in front of the horizontal port of P-8 section

Specifications
[Photograph]

Reference

(1) T. Nishitani, M. Hoek, H. Harano,G.A. Wurden, R.E. Chrien, "Triton Burnup Study in JT-60U", Plasma Phys. Control. Fusion, Vol. 38 (1996) 355.