CARTOGAM: A portable gamma camera

被引：17

作者：

Gal, O ^{[1
]}

Izac, C ^{[1
]}

Laine, F ^{[1
]}

Nguyen, A ^{[1
]}

机构：

[1] CEA SACLAY,DTA,LETI,DEIN,SPE,F-91191 GIF SUR YVETTE,FRANCE

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1997年 / 387卷 / 1-2期

关键词：

D O I：

10.1016/S0168-9002(96)01013-3

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

The gamma camera is devised to establish the cartography of radioactive sources against a visible background in quasi real time. This device is designed to spot sources from a distance during the preparation of interventions on active areas of nuclear installations. This implement will permit to optimize interventions especially on the dosimetric level. The camera consists of a double cone collimator, a scintillator and an intensified CCD camera. This chain of detection provides the formation of both gamma images and visible images. Even though it is wrapped in a denal shield, the camera is still portable (mass < 15 kg) and compact (external diameter = 8 cm). The angular resolution is of the order of one degree for gamma rays of 1 MeV. In a few minutes, the device is able to measure a dose rate of 10 mu Gy/h delivered for instance by a source of Co-60 of 90 mCi located at 10 m from the detector. The first images recorded in the laboratory will be presented and will illustrate the performances obtained with this camera.

引用

页码：297 / 303

页数：7