| Project/Area Number |
63880029
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| Research Category |
Grant-in-Aid for Developmental Scientific Research (B).
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| Allocation Type | Single-year Grants |
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| Research Field |
Nuclear engineering
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| Research Institution | Osaka University, Faculty of Engineering |
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Principal Investigator |
TAKAHASHI Akito Osaka University, Department of Nuclear Engineering, Associate Professor, 工学部, 助教授 (50029112)
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| Co-Investigator(Kenkyū-buntansha) |
YAMAMOTO Junji Osaka University, Department of Nuclear Engineering, Research Associate, 工学部, 助手 (90144427)
IIDA Toshiyuki Osaka University, Department of Nuclear Engineering, Research Associate, 工学部, 助手 (60115988)
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| Project Period (FY) |
1988 – 1990
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| Project Status |
Completed (Fiscal Year 1990)
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| Budget Amount *help |
¥9,300,000 (Direct Cost: ¥9,300,000)
Fiscal Year 1990: ¥1,800,000 (Direct Cost: ¥1,800,000)
Fiscal Year 1989: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1988: ¥4,800,000 (Direct Cost: ¥4,800,000)
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| Keywords | secondary charged particle / spectrum / E-TOF / two-dimensional analysis / shielding / pulse shape discrimination / proton / alpha-particle / 中性子反応二次荷電粒子 / エネルギ-スペクトル / 粒子弁別 / EーTOF二次元分析 / E-ToF / 14MeV中性子 / CsI / 中性子反応 / 荷電粒子スペクトル / EーTOF分析装置 / 開発 / CsIシンチレータ / 遮蔽体設計 / バックグランド / プロトンスペクトル / α線スペクトル / 分離測定 / 改良 / テスト |
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| Research Abstract |
Energy-spectral data of charged particles induced by neutron reactions are of fundamental importance for evaluating nuclear heating and material manage in fusion devices. Because of the difficulty in measuring techniques, only few data have been accumulated up to now in the world and the vedelopment of new spectrometers are therefore desired. In this study, a secondary charged particle spectrometer based on two-dimensional E-TOF analysis has been designed, fabricated and tested. Major problem to have overcome was how to sufficiently reduce background signals induced by detector itself and surrounding structural materials. Investigations were undertaken by testing various detectors, optimizing shielding configuration and adopting the pulse shape discrimination technique. Finally a spectrometer with satisfactory background reduction was developed. Using the developed spectrometer, proton and alpha-particle spectra by 14 MeV neutron reactions with Al target were measured for demonstration. The obtained spectra agreed well with the only existing data by Grimes and with the theoretically calculated ones. Conclusively, we can say that a satisfactory spectrometer has been developed.
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