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

Development of supermirror neutron guide tube and its applications to slow neutron physics

Research Project

Project/Area Number 56420061
Research Category

Grant-in-Aid for General Scientific Research (A)

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

Principal Investigator

OKAMOTO Sunao  京都大学 (30027396)

Project Period (FY) 1981 – 1985
Project Status Completed (Fiscal Year 1985)
Budget Amount *help
¥23,600,000 (Direct Cost: ¥23,600,000)
Fiscal Year 1982: ¥12,000,000 (Direct Cost: ¥12,000,000)
Fiscal Year 1981: ¥11,600,000 (Direct Cost: ¥11,600,000)
KeywordsMulti-layers of nickel and titanium / 中性子導管 / ニッケル・チタン多層膜 / 全中性子束
Research Abstract

1. The computer controled vacuum-deposition technique is developed to make multilayer mirrors of nickel and titanium within the accuracy of a few <゜]A> . To get the critical wavelength <lambda_c> =240 <゜]A> (normal component to the mirror), 185 layers are alternately deposited on the float glass of 6cm thick. The reflectivity of the mirror is found to be 0.85 on the average to neutrons of wavelength shorter than 580 <゜]A> , <lambda_c> of a single nickel mirror.
2. The super-mirror neutron guide tube is constructed at the B-4 beam hole in the KUR by connecting 13 elements with the use of a special equipment for ajusting the curve, twist and perpendicularity of mirrors, so that the neutron loss due to the abutment error is less than 1%. It is 11.7 m in length, with the cross section of 10mmx74mm.
3. The total neutron flux is measured as about 5x <10^7> n/ <cm^2> sec on the average at the exit of the guide tube. It is about 20 times as large as that at the nickel mirror guide tube installed at the E-3 beam hole. To reduce the leakage dose-rate to less than 0.5 mr/hr in the reactor room, special shieldings made of heavy concretes, <B_4> C and Li-tiles are manufactured.

Report

(1 results)
  • 1985 Final Research Report Summary
  • Research Products

    (10 results)

All Other

All Publications (10 results)

  • [Publications] 昭和57年秋の日本原子力学会要旨集. P.314 (1982)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] 短期研究会「中性子光学応用」報告書. P.18 (1982)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] 昭和60年春の日本原子力学会要旨集. P.58,59 (1985)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] 短期研究会「冷中性子設備開発と低速中性子実験」報告書. .37- .43 (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] 1985年核データ研究会のProceeding(JAERI-Mreport). (1986)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] Abstracts of the autumnal meeting of atomic energy society of Japan. p.314. (1982)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] Reports of the meeting on neutron optics in Res. Reactor Inst. of Kyoto Univ.p.18. (1982)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] Abstracts of the spring meeting of atomic energy society of Japan. p58, 59. (1985)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] Reports of the meeting on developments of cold neutron experiments in Res. Reactor Inst. of Kyoto Univ.p.37, p.43. (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1985 Final Research Report Summary
  • [Publications] Proceeding of the meeting on the nuclear data (JAERIM report). (1986)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1985 Final Research Report Summary

URL: 

Published: 1987-03-31   Modified: 2016-04-21  

Information User Guide FAQ News Terms of Use Attribution of KAKENHI

Powered by NII kakenhi