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Title: SiC Semiconductor Detector Power Monitors for Space Nuclear Reactors

As a part of a Department of Energy-Nuclear Engineering Research Initiative (NERI) Project, we are investigating SiC semiconductor detectors as power monitors for Generation IV power reactors. SiC detectors are well-suited as power monitors for reactors for space nuclear propulsion, due to their characteristics of small size, mass, and power consumption; mechanical ruggedness; radiation hardness; capability for high temperature operation; and potential for pulse mode operation at high count rates, which may allow for a reduction in the complexity of the reactor instrumentation and control system, as well as allow for verification of detector sensitivity, verification of channel operability, and channel self-repair. In this paper, a mathematical model of a SiC detector is presented. The model includes a description of the formation of electron-hole pairs in a SiC diode detector, using the computer code TRIM. The TRIM results are used as input to a MATLAB simulation of detector current output pulse formation, the results of which are intended for use as the input to a model of the detector channel as a whole.
Authors:
; ;  [1]
  1. Nuclear Engineering Program, Ohio State Univ., 206 W. 18th Ave., Columbus, OH 43210 (United States)
Publication Date:
OSTI Identifier:
20632867
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 699; Journal Issue: 1; Conference: STAIF 2004: 21. symposium on space nuclear power and propulsion: Human space exploration, space colonization, new frontiers and future concepts, Albuquerque, NM (United States), 8-11 Feb 2004; Other Information: DOI: 10.1063/1.1649618; (c) 2004 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; COMPUTERIZED SIMULATION; COUNTING RATES; M CODES; NEUTRON DETECTION; POWER METERS; PULSES; RADIATION MONITORS; REACTOR CONTROL SYSTEMS; REACTOR INSTRUMENTATION; SEMICONDUCTOR DETECTORS; SEMICONDUCTOR DEVICES; SENSITIVITY; SILICON CARBIDES; SPACE POWER REACTORS; T CODES NESDPS Office of Nuclear Energy Space and Defense Power Systems