학술논문
Reactor Antineutrino Directionality Measurement with the PROSPECT-I Detector
Document Type
Working Paper
Author
Andriamirado, M.; Balantekin, B.; Bass, C. D.; Rodrigues, O. Benevides; Bernard, E. P.; Bowden, N. S.; Bryan, C. D.; Carr, R.; Classen, T.; Conant, A. J.; Deichert, G.; Dolinski, M. J.; Erickson, A.; Galindo-Uribarri, A.; Gokhale, S.; Grant, C.; Hans, S.; Hansell, A. B.; Heeger, K. M.; Heffron, B.; Jaffe, D. E.; Jayakumar, S.; Jones, D. C.; Koblanski, J. R.; Kunkle, P.; Lane, C. E.; Littlejohn, B. R.; Sanchez, A. Lozano; Lu, X.; Maricic, J.; Mendenhall, M. P.; Meyer, A. M.; Milincic, R.; Mueller, P. E.; Mumm, H.; Napolitano, J.; Nave, C.; Neilson, R.; Oueslati, M.; Roca, C.; Rosero, R.; Surukuchi, P.; Sutanto, F.; Venegas-Vargas, D.; Weatherly, P. B.; Wilhelmi, J.; Yeh, M.; Zhang, C.; Zhang, X.
Source
Subject
Language
Abstract
The PROSPECT-I detector has several features that enable measurement of the direction of a compact neutrino source. In this paper, a detailed report on the directional measurements made on electron antineutrinos emitted from the High Flux Isotope Reactor is presented. With an estimated true neutrino (reactor to detector) direction of $\phi = 40.8\unicode{xB0} \pm 0.7\unicode{xB0}$ and $\theta = 98.6\unicode{xB0} \pm 0.4\unicode{xB0}$, the PROSPECT-I detector is able to reconstruct an average neutrino direction of $\phi = 39.4\unicode{xB0} \pm 2.9\unicode{xB0}$ and $\theta = 97.6\unicode{xB0} \pm 1.6\unicode{xB0}$. This measurement is made with approximately 48000 Inverse Beta Decay signal events and is the most precise directional reconstruction of reactor antineutrinos to date.