Precision Measurement of Neutron Flux using Alpha-Gamma
Abstract
A high precision measurement of cold neutron beam flux is a vital component of the beam method of neutron lifetime measurement used by the BL2 experiment. This measurement is accomplished through use of the Alpha-Gamma device. A pair of 10B targets are successively placed in the beam path such that the alpha and gamma production from the absorption determines the absolute neutron flux. The Alpha-Gamma device has been used in the calibration of several iterations of flux monitor used in BL2 to better than 0.1% precision. The results of recent measurements will be presented, and progress on the next generation of the device will be discussed.
This work was supported by the U.S. Department of Energy, Office of Science, Office of Nuclear Physics, under contract DE-FG02-03ER41258.- Publication:
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APS April Meeting Abstracts
- Pub Date:
- 2019
- Bibcode:
- 2019APS..APRC14003A