THE DESIGN OF AN IMPROVED PROTOTYPE GEIGER-MUELLER TUBE TO BE USED IN A STANDARD CD V-700 RADIOLOGICAL INSTRUMENT AND WHICH WILL INCREASE THE RANGE ONE DECADE

摘要

This report presents the results of a development and engineering program leading to the successful production of 30 prototypes of a new Geiger-Mueller tube (EON Type No. 5115), designed to operate in and extend the range of the standard CD V-700 radiological instrument by one decade. OCD classification for this general detector is OCD-D-101.nA definitive specification for this tube was evolved and the prototypes were evaluated in accordance with this specification. In addition the prototype tubes were subjected to extensive active and shelf life tests to prove their feasibility for application in the refer¬enced equipment.nTen prototype detectors were delivered to OCD as per contract requirements on February 19th, 1963. The second set, containing twenty prototypes, was delivered on June 10, 1963 after life tests as described.