Development of multichannel time-of-flight neutron spectrometer for the fast ignition experiment

被引：11

作者：

Abe, Yuki ^{[1
]}

Hosoda, Hirokazu ^{[1
]}

Arikawa, Yasunobu ^{[1
]}

Nagai, Takahiro ^{[1
]}

Kojima, Sadaoki ^{[1
]}

Sakata, Shohei ^{[1
]}

Inoue, Hiroaki ^{[1
]}

Iwasa, Yuki ^{[1
]}

Iwano, Keisuke ^{[1
]}

Fujioka, Shinsuke ^{[1
]}

Shiraga, Hiroyuki ^{[1
]}

Nakai, Mitsuo ^{[1
]}

Norimatsu, Takayoshi ^{[1
]}

Azechi, Hiroshi ^{[1
]}

机构：

[1] Institute of Laser Engineering, Osaka University

来源：

Plasma and Fusion Research | 2014年 / 9卷 / SPECIALISSUE.3期

关键词：

Fast-ignition laser fusion; Hard bremsstrahlung x-ray; Multichannel nTOF spectrometer; Neutron collimator; Neutron diagnostics; Photo-neutron;

D O I：

10.1585/pfr.9.4404110

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Neutron diagnostic in the fast-ignition experiment was successfully demonstrated by the multichannel timeof- flight neutron spectrometer MANDALA at Institute of Laser Engineering (ILE) in Osaka University. A large neutron collimator dramatically suppressed the serious background noise caused by photo-neutrons, and a peak yield of 2 × 106 deuterium-deuterium (DD) fusion neutrons was clearly observed. The new MANDALA system will provide measurements of the ion temperature and the areal density of the core plasma in the next fastignition experimental campaign in 2013. In this paper, we will present the design of the neutron collimator and the experimental results in the Fast-ignition Campaign 2012. © 2014 The Japan Society of Plasma Science and Nuclear Fusion Research.

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