JPS60131884U

JPS60131884U - Radiation detector calibration device

Info

Publication number: JPS60131884U
Application number: JP1753884U
Authority: JP
Inventors: 石橋　三男
Original assignee: 株式会社東芝
Priority date: 1984-02-13
Filing date: 1984-02-13
Publication date: 1985-09-03

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は従来の放射線検出部校正装置の部分概略構成を
示す断面図、第２図Ａおよび第２図Ｂはそれぞれ本考案
め一実施例の部分構成を示す断面図および部分拡大断面
図、第３図Ａおよび第３図Ｂはそれぞれ第２図の放射線
検出部校正装置に使用する校正用放射線発生源の構成例
を示す断面図、第４図は本考案の他の実施例を示す放射
線検出部校正装置の概略構成を示す側面図、第５図は本
考案の更に他の実施例を示す放射線検出部校正装置の構
成を示す断面図である１・・・放射線検出器、３・・・容器、５・・・遮蔽体
、７・・・照射孔、１７・・・照射孔遮蔽物、１９・・
・熱膨張性液体、２１・・・校正用放射線発生源、２３
・・・ヒーター、２７・・・液柱、２９・・・ストッパ
、３５・・・バイメタル、４１・・・形状記憶金属。FIG. 1 is a sectional view showing a partial schematic configuration of a conventional radiation detection unit calibration device, FIGS. 2A and 2B are a sectional view and a partially enlarged sectional view showing a partial configuration of an embodiment of the present invention, respectively; 3A and 3B are cross-sectional views showing an example of the configuration of a radiation source for calibration used in the radiation detector calibration device shown in FIG. 2, and FIG. 4 is a sectional view showing another embodiment of the present invention FIG. 5 is a side view showing a schematic configuration of a detection unit calibration device, and FIG. 5 is a sectional view showing a configuration of a radiation detection unit calibration device showing still another embodiment of the present invention. - Container, 5... Shield, 7... Irradiation hole, 17... Irradiation hole shield, 19...
- Thermal expandable liquid, 21... Calibration radiation source, 23
... Heater, 27 ... Liquid column, 29 ... Stopper, 35 ... Bimetal, 41 ... Shape memory metal.

Claims

[Scope of utility model registration request]

(1) Radiation of a predetermined intensity is irradiated from the irradiation hole formed in the shield to the detection part of the radiation detector, which is covered by a shield and placed in a container that stores the radioactive material to be measured. In a device for calibrating a detector, a calibration radiation source that irradiates radiation of a predetermined intensity is placed between a position where radiation can be irradiated through the irradiation hole using heat as a medium and a position where radiation cannot be irradiated. A radiation detector comprising a moving means for moving, a heat source for heating or absorbing heat from the moving means, and a shield provided around the irradiation hole to prevent natural radiation from entering through the irradiation hole. calibration equipment.

(2) The moving means is composed of a thermally expandable liquid having a calibration radiation source suspended in the liquid, and moves the floating calibration radiation source by thermal expansion due to heating. A radiation detector calibration device according to claim 1 of the utility model registration claim.

(3) The radiation detector calibration device according to claim 1, wherein the moving means is made of a bimetal whose warped portion is provided with a radiation source for calibration. .

(4) Utility model registration claim 1, characterized in that the moving means is made of a shape-memory metal that is provided with a radiation source for calibration in its deformable portion and that deforms into a predetermined shape by heating or absorbing heat. Calibration device for a radiation detector described in .