Monitoring the SNS basement neutron background with the MARS detector
Abstract
We present the analysis and results of the first dataset collected with the MARS neutron detector deployed at the Oak Ridge National Laboratory Spallation Neutron Source (SNS) for the purpose of monitoring and characterizing the beam-related neutron (BRN) background for the COHERENT collaboration. MARS was positioned next to the COH-CsI coherent elastic neutrino-nucleus scattering detector in the SNS basement corridor. This is the basement location of closest proximity to the SNS target and thus, of highest neutrino flux, but it is also well shielded from the BRN flux by infill concrete and gravel. These data show the detector registered roughly one BRN per day. Using MARS' measured detection efficiency, the incoming BRN flux is estimated to be for neutron energies above MeV and up to a few tens of MeV. We compare our results with previous BRN measurements in the SNS basement corridor reported by other neutron detectors.
Keywords
Cite
@article{arxiv.2112.02768,
title = {Monitoring the SNS basement neutron background with the MARS detector},
author = {COHERENT Collaboration and D. Akimov and P. An and C. Awe and P. S. Barbeau and B. Becker and V. Belov and I. Bernardi and M. A. Blackston and C. Bock and A. Bolozdynya and J. Browning and B. Cabrera-Palmer and D. Chernyak and E. Conley and J. Daughhetee and J. Detwiler and K. Ding and M. R. Durand and Y. Efremenko and S. R. Elliott and L. Fabris and M. Febbraro and A. Gallo Rosso and A. Galindo-Uribarri and M. P. Green and M. R. Heath and S. Hedges and D. Hoang and M. Hughes and B. A. Johnson and T. Johnson and A. Khromov and A. Konovalov and E. Kozlova and A. Kumpan and L. Li and J. M. Link and J. Liu and K. Mann and D. M. Markoff and J. Mastroberti and P. E. Mueller and J. Newby and D. S. Parno and S. I. Penttila and D. Pershey and R. Rapp and H. Ray and J. Raybern and O. Razuvaeva and D. Reyna and G. C. Rich and J. Ross and D. Rudik and J. Runge and D. J. Salvat and A. M. Salyapongse and K. Scholberg and A. Shakirov and G. Simakov and G. Sinev and W. M. Snow and V. Sosnovstsev and B. Suh and R. Tayloe and K. Tellez-Giron-Flores and I. Tolstukhin and E. Ujah and J. Vanderwerp and R. L. Varner and C. J. Virtue and G. Visser and T. Wongjirad and Y. -R. Yen and J. Yoo and C. -H. Yu and J. Zettlemoyer},
journal= {arXiv preprint arXiv:2112.02768},
year = {2022}
}