Reactor Antineutrino Directionality Measurement with the PROSPECT-I Detector

Published

June 12, 2024

Author(s)

Hans Mumm, Manoa Andriamirado, Baha Balantekin, Christopher Bass, Ohana Benevides Rodrigues, Ethan Bernard, Nathaniel Bowden, Christopher Bryan, Rachel Carr, Timothy Classen, Andrew Conant, Geoffrey Deichert, Michelle Dolinski, Anna Erickson, Alfredo Galindo-Uribarri, Sasmit Gokhale, Chris Grant, Sunej Hans, Adam Hansell, Karsten Heeger, Blaine Heffron, David Jaffe, Shashank Jayakumar, John Koblanski, Paige Kunkle, Charles Lane, Bryce Littlejohn, Adrian Lozano Sanchez, Xiaobin (Jeremy) Lu, Jelena Maricic, Michael Mendenhall, Andrew Meyer, Radovan Milincic, Paul Mueller, Russell Neilson, Xin Qian, Christian Roca, Richard Rosero, Pranava Teja Surukuchi, Felicia Sutanto, Diego Venegas-Vargas, Pierce Weatherly, James Wilhelmi, Minfang Yeh, Chao Zhang, Xianyi Zhang

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 φ = 40.8◦ ± 0.7◦ and θ = 98.6◦ ± 0.4◦, the PROSPECT-I detector is able to reconstruct an average neutrino direction of φ = 39.4 ± 2.9◦ and θ = 97.6◦ ± 1.6◦ . This measurement is made with approximately 48 000 Inverse Beta Decay signal events and is the most precise directional reconstruction of reactor antineutrinos to date.

Citation

Nuclear Instruments & Methods in Physics Research

Pub Type

Journals

Keywords

reactor neutrino, directional detection, reactor monitoring

Citation

Mumm, H. , Andriamirado, M. , Balantekin, B. , Bass, C. , Benevides Rodrigues, O. , Bernard, E. , Bowden, N. , Bryan, C. , Carr, R. , Classen, T. , Conant, A. , Deichert, G. , Dolinski, M. , Erickson, A. , Galindo-Uribarri, A. , Gokhale, S. , Grant, C. , Hans, S. , Hansell, A. , Heeger, K. , Heffron, B. , Jaffe, D. , Jayakumar, S. , Koblanski, J. , Kunkle, P. , Lane, C. , Littlejohn, B. , Lozano Sanchez, A. , Lu, X. , Maricic, J. , Mendenhall, M. , Meyer, A. , Milincic, R. , Mueller, P. , Neilson, R. , Qian, X. , Roca, C. , Rosero, R. , Surukuchi, P. , Sutanto, F. , Venegas-Vargas, D. , Weatherly, P. , Wilhelmi, J. , Yeh, M. , Zhang, C. and Zhang, X. (2024), Reactor Antineutrino Directionality Measurement with the PROSPECT-I Detector, Nuclear Instruments & Methods in Physics Research (Accessed November 23, 2024)