skip to main content

This content will become publicly available on April 7, 2017

Title: Fission-powered in-core thermoacoustic sensor

A thermoacoustic engine is operated within the core of a nuclear reactor to acoustically telemeter coolant temperature (frequency-encoded) and reactor power level (amplitude-encoded) outside the reactor, thus providing the values of these important parameters without external electrical power or wiring. We present data from two hydrophones in the coolant (far from the core) and an accelerometer attached to a structure outside the reactor. Furthermore, these signals have been detected even in the presence of substantial background noise generated by the reactor's fluid pumps.
 [1] ;  [2] ;  [3] ;  [2] ;  [4]
  1. Pennsylvania State Univ., University Park, PA (United States)
  2. Idaho National Lab. (INL), Idaho Falls, ID (United States)
  3. Pennsylvania State Univ., State College, PA (United States)
  4. Westinghouse Electric Company, Cranberry Township, PA (United States)
Publication Date:
OSTI Identifier:
Report Number(s):
Journal ID: ISSN 0003-6951; APPLAB
Grant/Contract Number:
Accepted Manuscript
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 108; Journal Issue: 14; Journal ID: ISSN 0003-6951
American Institute of Physics (AIP)
Research Org:
Idaho National Lab. (INL), Idaho Falls, ID (United States)
Sponsoring Org:
Country of Publication:
United States
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY; 47 OTHER INSTRUMENTATION; nuclear fuel; sensor; temperature; thermoacoustic; acoustic sensing; gas sensors; nuclear acoustic resonance; acoustic resonance