A Long and Slender Position-Sensitive Helium-3 Proportional Counter with an Anode Wire Supported by a Ladder-Shaped Solid Insulator.

• URITANI Akira

  Department of Nuclear Engineering, School of Engineering, Nagoya University

• KUNIYA Yutaka

  Department of Nuclear Engineering, School of Engineering, Nagoya University

• TAKENAKA Yasuto

  Department of Nuclear Engineering, School of Engineering, Nagoya University

• TOYOKAWA Hiroyuki

  Department of Nuclear Engineering, School of Engineering, Nagoya University

• YAMANE Yoshihiro

  Department of Nuclear Engineering, School of Engineering, Nagoya University

• MORI Chizuo

  Department of Nuclear Engineering, School of Engineering, Nagoya University

• KOBAYASHI Keiji

  Research Reactor Institute, Kyoto University

• SHIROYA Seiji

  Research Reactor Institute, Kyoto University

• ICHIHARA Chihiro

  Research Reactor Institute, Kyoto University

抄録

A long and slender position-sensitive 3He proportional counter with an outer diameter of 8mm and an effective length of 1.2m has been developed to measure neutron flux distributions in a critical assembly. Because it is difficult to make such a long and slender counter of con- ventional structure where an anode wire is stretched at the center of a cylindrical cathode tube, three prototype electrode systems of which anode wires are supported by insulator plates have been proposed. Among these three electrode systems, the electrode system of which anode wire is stuck on a ladder-shaped insulator has been adopted. The neutron flux distributions in the core of the Kyoto University Critical Assembly (KUCA) have been measured with the counter. Some non-uniformity of the detection efficiency has been observed throughout the counter. This non-uniformity has been corrected by calibrating the position-dependent detection efficiency with a gold wire activation method. A fairly satisfactory distribution, where the relative deviation from the gold wire activation method is 5.0%, has been obtained. Though the non-uniformity of the detection efficiency should be solved for precise measurements, the counter can be used for quick and rough measurements of neutron flux distributions.

収録刊行物

• Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌）

  Ｊｏｕｒｎａｌ　ｏｆ　Ｎｕｃｌｅａｒ　Ｓｃｉｅｎｃｅ　ａｎｄ　Ｔｅｃｈｎｏｌｏｇｙ（日本原子力学会英文論文誌） 32 (8), 719-726, 1995

  一般社団法人 日本原子力学会

キーワード

• position-sensitive proportional counter
• helium 3
• ladder-shaped insulator
• long and slender counter
• critical assembly
• neutrons
• neutron flux distribution
• measuring methods
• performance

詳細情報

• CRID: 1390282679070470016
• NII論文ID: 10002072866
• NII書誌ID: AA00703720
• DOI: 10.3327/jnst.32.719
• COI: 1:CAS:528:DyaK2MXotFOktbc%3D
• ISSN: 18811248
• ISSN: 00223131
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可