Transition Edge Sensor Chip Design of Modular CE{\nu}NS Detector for the Ricochet Experiment

TL;DR

This paper presents a new TES chip design for the Ricochet experiment's CEνNS detectors, aiming to improve neutrino detection precision and serve as a prototype for future large-scale neutrino experiments.

Contribution

The paper introduces an updated TES chip design and provides performance predictions through numerical modeling for the Ricochet experiment.

Findings

Design meets Ricochet's requirements for neutrino detection.

Performance predictions indicate suitability for cryogenic CEνNS detection.

Demonstrates potential for scaling to large detector arrays.

Abstract

Coherent elastic neutrino-nucleus scattering (CE$\nu$NS) offers a valuable approach in searching for physics beyond the Standard Model. The Ricochet experiment aims to perform a precision measurement of the CE$\nu$NS spectrum at the Institut Laue-Langevin (ILL) nuclear reactor with cryogenic solid-state detectors. The experiment will employ an array of cryogenic thermal detectors, each with a mass of around 30 g and an energy threshold of 50 eV. One section of this array will contain 9 Transition Edge Sensor (TES) based calorimeters. The design will not only fulfill requirements for Ricochet, but also act as a demonstrator for future neutrino experiments that will require thousands of macroscopic detectors. In this article we present an updated TES chip design as well as performance predictions based on a numerical modeling.