QCALT: a tile calorimeter for KLOE-2 upgrade

TL;DR

The paper presents QCALT, a new tile calorimeter designed for the KLOE-2 upgrade, featuring high efficiency for low-energy photons, excellent time and space resolution, and utilizing SiPM readout for enhanced performance.

Contribution

Introduction of QCALT, a tile calorimeter with SiPM readout, tailored to improve photon detection and event reconstruction in the KLOE-2 experiment upgrade.

Findings

Successful tests of calorimeter components

Achieved time resolution below 1 ns

Designed for high efficiency in 20-300 MeV photon detection

Abstract

The upgrade of the DA$\Phi$NE machine layout requires a modification of the size and position of the inner focusing quadrupoles of KLOE-2 thus asking for the realization of two new calorimeters covering the quadrupoles area. To improve the reconstruction of $K_L\to 2\pi^0$ events with photons hitting the quadrupoles a calorimeter with high efficiency to low energy photons (20-300 MeV), time resolution of less than 1 ns and space resolution of few cm, is needed. To match these requirements, we are designing a tile calorimeter, QCALT, where each single tile is readout by mean of SiPM for a total granularity of 2400 channels. We show first tests of the different calorimeter components.