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Development of Directional Neutron Detector for Fusion Neutron Emission Profile Measurement

Research Project

Project/Area Number 11558056
Research Category

Grant-in-Aid for Scientific Research (B)

Allocation TypeSingle-year Grants
Section展開研究
Research Field Nuclear fusion studies
Research InstitutionNagoya University

Principal Investigator

IGUCHI Tetsuo  Nagoya University, Department of Nuclear Engineering, Professor, 工学研究科, 教授 (60134483)

Co-Investigator(Kenkyū-buntansha) SASAO Mamiko  National Institute of Fusion Science, Associated Professor, 開発研究系, 助教授 (00144171)
KAWARABAYASHI Jun  Nagoya University, Department of Nuclear Engineering, Research Assistant, 工学研究科, 助手 (80283414)
URITANI Akira  Nagoya University, Department of Nuclear Engineering, Associated Professor, 工学研究科, 助教授 (10213521)
KITA Yoshio  Toshiba Co.Ltd, Fuchyu Factory, Senior Research Engineer, 府中工場・原子力計装システム部, 主査(研究職)
Project Period (FY) 1999 – 2001
Project Status Completed (Fiscal Year 2001)
Budget Amount *help
¥13,800,000 (Direct Cost: ¥13,800,000)
Fiscal Year 2001: ¥1,900,000 (Direct Cost: ¥1,900,000)
Fiscal Year 2000: ¥4,400,000 (Direct Cost: ¥4,400,000)
Fiscal Year 1999: ¥7,500,000 (Direct Cost: ¥7,500,000)
KeywordsNuclear Fusion / Neutron Measurement / Fast Neutron Camera / Directional Neutron Detector / Rare Gas Scintillator / Burning Plasma Diagnostics / 高指向性中性子検出器
Research Abstract

The present study is aiming to develop a compact fast neutron camera based on an array of a small size of directional neutron detectors toward advanced neutron emission profile measurement for magnetic confinement fusion (DT and/or DD) plasma experiment. The detector concept is a counter telescope made of He(or H_2)-Xe gas scintillator to selectively detect recoil heliums (or protons) scattered in the forward direction through elastic collision with incident neutrons. We have made an optimal design and trial construction of a prototype detector to verify the basic performance experimentally, and also given a design consideration of the compact fusion neutron camera system for practical use in an existent fusion device.
The main results are summarized as follows ;
(1) The light output characteristics of He-Xe gas scintillator has been experimentally made clear on α (recoil He) detection through optimization of gas purification and gas mixture ratio.
(2) The Monte Carlo simulation program for the detector response to neutron with an arbitrary energy has been developed, which has given an optimal design of the directional neutron detectors based on He-Xe and H_2-Xe gas scintillators for DT and DD neutron detection, respectively.
(3) The basic performance on a trial manufactured prototype detector system has been verified with an accelerator DT neutron source, including some proposals for further improvement toward practical application.
(4) The design consideration of a neutron camera based on an array of directional neutron detectors has been made for DD plasma experiment at LHD (in NIFS). It has been demonstrated that the present neutron camera system can largely reduce its volume up to 1/20 less than that of a conventional one with a multichannel neutron collimator, keeping almost the same performance.

Report

(4 results)
  • 2001 Annual Research Report   Final Research Report Summary
  • 2000 Annual Research Report
  • 1999 Annual Research Report
  • Research Products

    (4 results)

All Other

All Publications (4 results)

  • [Publications] T.Iguchi, S.Iizuka, A.Uritani, J.Kawarabayashi: "Conceptual Design of Compact Neutron Camera with Directional Neutron Detector for Nuclear Fusion Experiment"Fusion Technology. 39・2. 1147-1151 (2001)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Iguchi, S.Iizuka, A.Uritani, J. Kawarabayashi: "Conceptual Design of Compact Neutron Camera with Directional Neutron Detector for Nuclear Fusion Experiment"Fusion Technology. 39(2). 1147-1151 (2001)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2001 Final Research Report Summary
  • [Publications] T.Iguchi, S.Iizuka, A.Uritani, J.Kawarabayashi: "Conceptual Design of Compact Neutron Camera with Directional Neutron Detector for Nuclear Fusion Experiment"Fusion Technology. 39・2. 1147-1151 (2001)

    • Related Report
      2001 Annual Research Report
  • [Publications] T.Iguchi,S.Iizuka,A.Uritani and J.Kawarabayashi: "Conceptual Design of Compact Neutron Camera with Directional Neutron Detector for Nuclear Fusion Experiment"Proc.14^<th> Topical Meeting on the Technology of Fusion Energy. (To be pubulished). (2001)

    • Related Report
      2000 Annual Research Report

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Published: 1999-04-01   Modified: 2016-04-21  

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