Development of wide-range in-core fission counter-chamber for HTGR

HTGR Measurements and Instrumentation Systems

“…Prior HTGR development programs have demonstrated fission chambers that function up to 800°C. 55,56 However, these detectors are not commercially available. The current design intent for the NGNP is to move fission chambers away from the core and infer core flux conditions from the remote measurements.…”