Continuous gamma-ray spectrometry in the Fast Flux Test Facility

Conference · Tue Jan 01 04:00:00 EST 1980

OSTI ID:6562538

Gold, R.; Kaiser, B. J.; Moore, F. S.; Bunch, W. L.; McElroy, W. N.; Sheen, E. M.

Gamma-ray continua have been measured at startup in the Fast Flux Test Facility (FFTF). A special FFTF insert, called the In-Reactor Thimble (IRT), provided an adequate environment for in-situ operation of the gamma spectrometer. The IRT replaced a fuel assembly near core center (No. 2101) and measurements were conducted at three axial locations, namely midplane, the lower axial shield, and the upper axial reflector. Observations were carried out with Compton Recoil Gamma-Ray Spectrometry at the state-of-the-art. Advantage was thereby taken of the most recent advances, including extension of gamma-ray spectrometry up to roughly 7 MeV with the new in-situ Janus detector probe. On this basis, in-core gamma-ray continua results are presented for FFTF.

• Research Organization: Hanford Engineering Development Lab., Richland, WA (USA)
• DOE Contract Number: AC14-76FF02170
• OSTI ID: 6562538
• Report Number(s): HEDL-SA-2116; CONF-800942-21
• Country of Publication: United States
• Language: English

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