Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
9844940 | Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment | 2005 | 6 Pages |
Abstract
Micro-pocket fission detectors (MPFD) have been fabricated and tested as in-core flux monitors in the 250Â kW TRIGA nuclear reactor at Kansas State University. The prototype devices have been coated with a natural uranyl-nitrate to provide a neutron reactive coating. The devices are composed of alumina substrates sealed together to form a miniature gas pocket 3Â mm in diameter and 1Â mm wide. The devices are radiation hard and can operate in pulse mode in a neutron flux exceeding 1012Â cmâ2Â sâ1. Placed in the central thimble of the reactor core, the MPFDs have shown count rate linearity from low to high power. Dead time losses become apparent at power levels exceeding 100Â kW, yet are still low enough to allow for pulse mode operation.
Related Topics
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Authors
Douglas S. McGregor, Martin F. Ohmes, Rylan E. Ortiz, A.S.M. Sabbir Ahmed, J. Kenneth Shultis,