Improvements to the Leake Neutron Detector I

✍ Scribed by J.W. Leake; T. Lowe; R.S. Mason

• Publisher: Elsevier Science
• Year: 2004
• Tongue: English
• Weight: 245 KB
• Volume: 519
• Category: Article
• ISSN: 0168-9002
• DOI: 10.1016/j.nima.2003.11.040

✦ Synopsis

The use of cadmium as the shield in the wide-energy range spherical neutron detector developed by Leake in 1966-1968 is now causing problems that necessitate its replacement. The overestimation of the measured neutron dose equivalent in the energy region around 5 keV has long been a problem. This has led to a rethink of the design in which the resonance absorption properties of materials has been studied in an attempt to reduce the sensitivity around 5 keV (relative to 10 MeV) and also to increase the thermal neutron sensitivity thus giving a better overall ambient dose equivalent, H Ã (10), response.

We report progress on the development of a replacement detector with an improved energy response.