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Proceedings Paper

Development of micro-pocket fission detectors (MPFD) for near-core and in-core neutron flux monitoring
Author(s): Martin F. Ohmes; Douglas S. McGregor; J. Kenneth Shultis; P. Michael Whaley; A.S.M. Sabbir Ahmed; Clayton C. Bolinger; Tracy C. Pinsent
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Paper Abstract

Miniaturized Micro-Pocket Fission Detectors (MPFD) are under investigation as real-time neutron flux monitors. The devices are capable of performing near-core and in-core reactor power measurements. The basic design utilizes neutron reactive material confined within a miniaturized gas pocket, similar to that of a fission chamber. Device size ranges from 500 microns to a few millimeters thick, thereby allowing them to be inserted directly between fuel elements of a reactor core. Fabricated from inexpensive ceramic materials, the detectors can be fashioned into a linear array to facilitate 3-D mapping of a reactor core neutron flux profile in "real-time". Initial tests have shown these devices to be extremely radiation hard and potentially capable of operating in a neutron fluence exceeding 1016 n cm-2 without noticeable degradation.

Paper Details

Date Published: 20 January 2004
PDF: 9 pages
Proc. SPIE 5198, Hard X-Ray and Gamma-Ray Detector Physics V, (20 January 2004); doi: 10.1117/12.513852
Show Author Affiliations
Martin F. Ohmes, Kansas State Univ. (United States)
Douglas S. McGregor, Kansas State Univ. (United States)
J. Kenneth Shultis, Kansas State Univ. (United States)
P. Michael Whaley, Kansas State Univ. (United States)
A.S.M. Sabbir Ahmed, Kansas State Univ. (United States)
Clayton C. Bolinger, Kansas State Univ. (United States)
Tracy C. Pinsent, Kansas State Univ. (United States)


Published in SPIE Proceedings Vol. 5198:
Hard X-Ray and Gamma-Ray Detector Physics V
Larry A. Franks; Arnold Burger; Ralph B. James; Paul L. Hink, Editor(s)

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