Report
Rock Neutron Backgrounds from FNAL Neutrino Beamlines in the $\nu$BDX-DRIFT Detector
| العنوان: | Rock Neutron Backgrounds from FNAL Neutrino Beamlines in the $\nu$BDX-DRIFT Detector |
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| المؤلفون: | Sierra, D. Aristizabal, Barrow, J. L., Dutta, B., Kim, D., Snowden-Ifft, D., Strigari, L., Wood, M. H. |
| سنة النشر: | 2022 |
| المجموعة: | High Energy Physics - Experiment High Energy Physics - Phenomenology |
| مصطلحات موضوعية: | High Energy Physics - Experiment, High Energy Physics - Phenomenology |
| الوصف: | The $\nu$BDX-DRIFT collaboration seeks to detect low-energy nuclear recoils from CE$\nu$NS or BSM interactions at FNAL. Backgrounds due to rock neutrons are an important concern. We present a~\texttt{GENIE} and~\texttt{GEANT4} based model to estimate backgrounds from rock neutrons produced in neutrino-nucleus interactions within the rock walls surrounding the underground halls. This model was bench-marked against the $2009$ COUPP experiment performed in the MINOS hall in the NuMI neutrino beam, and agreement is found between experimental results and the modeled result to within $30\%$. Working from this validated model, a similar two-stage simulation was performed to estimate recoil backgrounds in the $\nu$BDX-DRIFT detector across several beamlines. In the first stage utilizing~\texttt{GEANT4}, neutrons were tallied exiting the walls of a rectangular underground hall utilizing four different neutrino beam configurations. These results are presented for use by other underground experiments requiring estimations of their rock neutron backgrounds. For $\nu$BDX-DRIFT, the second stage propagated neutrons from the walls and recorded energy deposited within a scintillator veto surrounding the detector and nuclear recoils within the detector's fiducial volume. The directional signal from the $\nu$BDX-DRIFT detector allows additional background subtraction. A sample calculation of a $10\,$m$^3\cdot\,$yr exposure to the NuMI Low Energy (LE) beam configuration shows a CE$\nu$NS signal-to-noise ratio of $\sim$2.5. Comment: Accepted by PRD. Covered by SCOAP |
| نوع الوثيقة: | Working Paper |
| DOI: | 10.1103/PhysRevD.107.013003 |
| URL الوصول: | http://arxiv.org/abs/2210.08612 |
| رقم الانضمام: | edsarx.2210.08612 |
| قاعدة البيانات: | arXiv |
| DOI: | 10.1103/PhysRevD.107.013003 |
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