학술논문
First Measurement of the Total Neutron Cross Section on Argon Between 100 and 800 MeV
Document Type
Working Paper
Author
Bhandari, B.; Bian, J.; Bilton, K.; Callahan, C.; Chaves, J.; Chen, H.; Cline, D.; Cooper, R. L.; Danielson, D.; Danielson, J.; Dokania, N.; Elliott, S.; Fernandes, S.; Gardiner, S.; Garvey, G.; Gehman, V.; Giuliani, F.; Glavin, S.; Gold, M.; Grant, C.; Guardincerri, E.; Haines, T.; Higuera, A.; Ji, J. Y.; Kadel, R.; Kamp, N.; Karlin, A.; Ketchum, W.; Koerner, L. W.; Lee, D.; Lee, K.; Liu, Q.; Locke, S.; Louis, W. C.; Manalaysay, A.; Maricic, J.; Martin, E.; Martinez, M. J.; Martynenko, S.; Mauger, C.; McGrew, C.; Medina, J.; Medina, P. J.; Mills, A.; Mills, G.; Mirabal-Martinez, J.; Olivier, A.; Pantic, E.; Philipbar, B.; Pitcher, C.; Radeka, V.; Ramsey, J.; Rielage, K.; Rosen, M.; Sanchez, A. R.; Shin, J.; Sinnis, G.; Smy, M.; Sondheim, W.; Stancu, I.; Sterbenz, C.; Sun, Y.; Svoboda, R.; Taylor, C.; Teymourian, A.; Thorn, C.; Tull, C. E.; Tzanov, M.; Van de Water, R. G.; Walker, D.; Walsh, N.; Wang, H.; Wang, Y.; Yanagisawa, C.; Yarritu, A.; Yoo, J.
Source
Phys. Rev. Lett. 123, 042502 (2019)
Subject
Language
Abstract
We report the first measurement of the neutron cross section on argon in the energy range of 100-800 MeV. The measurement was obtained with a 4.3-hour exposure of the Mini-CAPTAIN detector to the WNR/LANSCE beam at LANL. The total cross section is measured from the attenuation coefficient of the neutron flux as it traverses the liquid argon volume. A set of 2,631 candidate interactions is divided in bins of the neutron kinetic energy calculated from time-of-flight measurements. These interactions are reconstructed with custom-made algorithms specifically designed for the data in a time projection chamber the size of the Mini-CAPTAIN detector. The energy averaged cross section is $0.91 \pm{} 0.10~\mathrm{(stat.)} \pm{} 0.09~\mathrm{(sys.)}~\mathrm{barns}$. A comparison of the measured cross section is made to the GEANT4 and FLUKA event generator packages.
Comment: 5 pages, 1 table, 3 figures, submitted to Physical Review Letters
Comment: 5 pages, 1 table, 3 figures, submitted to Physical Review Letters