Development of Fast Neutron Spectrometer of Proportional Counter and Si-Detector Telescope Type

Chizuo Mori; Masayuki Tojo; Katsuo Yanagida; Junichi Goto; Akira Uritani; Hiroshi Miyahara; Yuyan Wu; Katsuhisa Kudo; Naoto Takeda; Yujiro Ikeda; Yoshimi Kasugai; Toshiyuki Iida; Yoichi Sakuma; Mamiko Sasao

doi:dx.doi.org/10.13182/FST96-A11963101

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Development of Fast Neutron Spectrometer of Proportional Counter and Si-Detector Telescope Type

Chizuo Mori, Masayuki Tojo, Katsuo Yanagida, Junichi Goto, Akira Uritani, Hiroshi Miyahara, Yuyan Wu, Katsuhisa Kudo, Naoto Takeda, Yujiro Ikeda, Yoshimi Kasugai, Toshiyuki Iida, Yoichi Sakuma, Mamiko Sasao

Fusion Science and Technology / Volume 30 / Number 3P2B / December 1996 / Pages 1134-1138

Neutronics Experiments and Analyses / dx.doi.org/10.13182/FST96-A11963101

Published:February 9, 2018

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A new type of fast neutron spectrometer composed of a proportional counter with methane and a Si semiconductor detector was constructed for the measurement of plasma-temperature. Methane can act as recoil-proton converter and also as energy loss measurement of the proton in the converter. Si detector, off-centered to avoid radiation damage, measures the rest energy of the recoil-proton. The energy resolutions were 2.4 % for 5 MeV neutrons and 2.9 % for 14 MeV neutrons.