• Search Research Projects
  • Search Researchers
  • How to Use
  1. Back to previous page

Fabrication and application of position sensitive neutron counter with a new method to obtain signals from only one end of anode wire

Research Project

Project/Area Number 02558023
Research Category

Grant-in-Aid for Developmental Scientific Research (B)

Allocation TypeSingle-year Grants
Research Field Nuclear engineering
Research InstitutionNagoya University

Principal Investigator

MORI Chizuo  Nagoya University School of Engineering Professor, 工学部, 教授 (80023068)

Co-Investigator(Kenkyū-buntansha) WAKAYAMA Naoaki  Japan Atomic Energy Research Institute Vice-chief Director, 東海研究所・高温工学部, 次長
URITANI Akira  Nagoya University School of Engineering Research Assistant, 工学部, 助手 (10213521)
AOYAMA Takahiko  Nagoya University School of Engineering Research Assistant, 工学部, 助手 (80023307)
Project Period (FY) 1990 – 1991
Project Status Completed (Fiscal Year 1991)
Budget Amount *help
¥12,000,000 (Direct Cost: ¥12,000,000)
Fiscal Year 1991: ¥2,700,000 (Direct Cost: ¥2,700,000)
Fiscal Year 1990: ¥9,300,000 (Direct Cost: ¥9,300,000)
KeywordsPosition sensitive counter / Proportional counter / Nuclear fission counter / Anode wire / Fast amplifier / A single preamplifier / Position resolution / Shaping time constant / 位置検出器 / 中性子計数管 / 高δ線線量率 / 波形整形 / 整形時定数 / 中性子束分布 / 抵抗陽極板 / 波形処理 / 新方式位置検出 / 立上リ時間 / 遅延ブロック / コンデンサ-接地
Research Abstract

The purpose of the research is the development and application of a new counter with a novel position-sensing method using slow and fast components in the output signal observed at one end of a resistive anode wire of which the other end is grounded through a high voltage capacitor.
Two main amplifiers are used through a single pre-amplifier. An output pulse Vf obtained through a fast amplifier with a shaping time constant of 0.1 micro-sec gives position information and the output pulse Vs from a rather slow amplifier with time constant of 10 micro-sec gives the information of the total charge. Therefore, Vf/Vs gives the accurate position of a detected radiation. The relative position resolution obtained with this principle was 0.011. However, the position resolution slightly depended on the position itself.
Position sensitive nuclear fission counter with an outer diameter of 15mm and a length of 1.2m was fabricated. The position resolution deteriorated under gamma-ray exposure of 10000R/h (2.58C/kg・h). The deterioration was found to be due to the fluctuation of the number of primary electrons produced by gamma-rays and, therefore, to be proportional to the pulse shaping time of the main amplifiers.
Position sensitive nuclear fission counter with an outer diameter of 10mm and a length of 2m was fabricated and inserted into a narrow measurement hole in a graphite pile to measure neutron flux distribution. The effect of the streaming of neutrons could be neglected because of very thin counter.

Report

(3 results)
  • 1991 Annual Research Report   Final Research Report Summary
  • 1990 Annual Research Report
  • Research Products

    (14 results)

All Other

All Publications (14 results)

  • [Publications] A.Uritani: "A Novel Position-Sensing Method using Fast and Slow Components in the Output Signal from a Proportional Counter" Nucl.Instr.& Methods. A299. 231-233 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] C.Mori: "Application of a Logarithmic Amplifier to a Charge-division-type Position-sensitive Proportional Counter" Nucl.Instr.& Methods. A299. 128-132 (1990)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] C.Mori: "A New Position-Sensitive Nuclear Fission Counter with a Convenient Readout Method for Neutron Measurement" Nucl.Instr.& Methods. A310. 437-440 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T.Aoyama: "Highly Reliable Low-Level Neutron Detector using He-3 Proportional Counter" Radioisotopes. 40. 188-192 (1991)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] A. Uritani: "A Novel Position-Sensing Method Using Fast and Slow Components in the Output Signal from a Proportional Counter" Nucl. Instr. & Methods. A299. 231-233 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] C. Mori: "Application of a Logarithmic Amplifier to a Charge-division-type Position-sensitive Proportional Counter" Nucl. Instr. & Methods. A299. 128-132 (1990)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] C. Mori: "A New Position-Sensitive Nuclear Fission Counter with a Convenient Readout Method for Neutron Measurement" Nucl. Instr. & Methods. A310. 437-440 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] T. Aoyama: "Highly Reliable Low-Level Neutron Detector Using 'He Proportional Counter" Radioisotopes. 40(5). 188-192 (1991)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1991 Final Research Report Summary
  • [Publications] Chizuo Mori: "Application of a logarithmic amplifier to a charge-division-type position-sensitive proportional counter" Nucl.Instr.Methods in phys.Res.A. A299. 128-132 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Akira Uritani: "A nevel position-sensing method using fast and slow components in the output signal from a proportional counter" Nucl.Instr.Methods in Phys.Res.A. A299. 231-233 (1990)

    • Related Report
      1991 Annual Research Report
  • [Publications] Chizuo Mori: "A new position-sensitive nuclear fission counter with a convenient read-out method for neutron measurement" Nucl.Instr.Methods in phys.Res.A. A310. 437-440 (1991)

    • Related Report
      1991 Annual Research Report
  • [Publications] Chizuo Mori: "Application of a lograrithmic amplifur to a chargeーdivisontype positionーsensitive proportional counter" Nucl.Instr.Methods in Phus.Res.A. A299. 128-132 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Akira Uritani: "A norel positionーsensing method using fast and slow copmonents in the output signal from a proportional counter" Nucl.Instr.Methods in Phus.Res.A. A299. 231-233 (1990)

    • Related Report
      1990 Annual Research Report
  • [Publications] Chizuo Mori: "A new positionーsensitive nuclear fission counter with a converient readーout method for neutron measurement" Nucl.Instr.Methods in Phus.Res.A.

    • Related Report
      1990 Annual Research Report

URL: 

Published: 1990-04-01   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi