# Coherent elastic nuclear scattering of $^{51}$Cr neutrinos

## TL;DR

This paper evaluates the feasibility of detecting coherent elastic neutrino-nucleus scattering using a $^{51}$Cr source, focusing on expected event rates and experimental setup considerations.

## Contribution

It provides a detailed analysis of using a $^{51}$Cr source for neutrino scattering experiments, including flux, spectrum, and detection capabilities.

## Key findings

- Approximately 3900 counts on germanium target with a 5 MCi source
- Detection of about 900 counts on sapphire target under similar conditions
- Feasibility of multiple source activations for increased exposure

## Abstract

Searches for new physics in the coherent elastic neutrino-nucleus scattering require a precise knowledge of the neutrino flux and energy spectrum. In this paper we investigate the feasibility and the performances of an experiment based on a $^{51}$Cr source, whose neutrino spectrum is known and whose activity can be heat-monitored at few permil level. With a 5 MCi source placed at ~ 25 cm from the detector, under an exposure of two $^{51}$Cr half-lives (55.4 days), we evaluate 3900 (900) counts on a 2000 cm$^3$ target of germanium (sapphire) featuring an energy threshold of 8 (20) eV. To further increase the exposure, multiple activations of the same source could be possible.