In-situ calibration of TFTR (Tokamak Fusion Test Reactor) neutron detectors

Technical Report · Thu Mar 01 00:00:00 EST 1990

DOI:https://doi.org/10.2172/7164819· OSTI ID:7164819

Hendel, H W; Palladino, R W; Barnes, C W; Diesso, M; Felt, J S; Jassby, D L; Johnson, L C; Ku, L P; Liu, Q P; Motley, R W; Murphy, H B; Murphy, J; Nieschmidt, E B; Roberts, J A; Saito, T; Strachan, J D; Waszazak, R J; Young, K

We report results of the TFTR fission detector calibration performed in December 1988. A NBS-traceable, remotely controlled {sup 252}Cf neutron source was moved toroidally through the TFTR vacuum vessel. Detection efficiencies for two {sup 235}U detectors were measured for 930 locations of the neutron point source in toroidal scans at 16 different major radii and vertical heights. These scans effectively simulated the volume-distributed plasma neutron source, and the volume-integrated detection efficiency was found to be insensitive to plasma position. The Campbell mode is useful due to its large overlap with the count rate mode and large dynamic range. The resulting absolute plasma neutron source calibration has an uncertainty of {plus minus} 13%. 21 refs., 23 figs., 4 tabs.

• Research Organization: Princeton Plasma Physics Lab. (PPPL), Princeton, NJ (United States)
• Sponsoring Organization: DOE/ER
• DOE Contract Number: AC02-76CH03073
• OSTI ID: 7164819
• Report Number(s): PPPL-2679; ON: DE90007943; TRN: 90-009262
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
NEUTRON DETECTORS
CALIBRATION
ANGULAR DISTRIBUTION
CALIFORNIUM 252
EFFICIENCY
NEUTRON SOURCES
TFTR TOKAMAK
ACTINIDE ISOTOPES
ACTINIDE NUCLEI
ALPHA DECAY RADIOISOTOPES
CALIFORNIUM ISOTOPES
DISTRIBUTION
EVEN-EVEN NUCLEI
HEAVY NUCLEI
ISOTOPES
MEASURING INSTRUMENTS
NUCLEI
PARTICLE SOURCES
RADIATION DETECTORS
RADIATION SOURCES
RADIOISOTOPES
THERMONUCLEAR REACTORS
TOKAMAK TYPE REACTORS
YEARS LIVING RADIOISOTOPES
700102* - Fusion Energy- Plasma Research- Diagnostics