Study of time resolution measurements and prospects for energy resolution of an ultra-compact sampling calorimeter (RADiCAL) module at EM shower maximum over the energy range 25 GeV 150 GeV

• DOI: 10.1016/j.nima.2024.169737
• Publication Date: 2024-08-12T21:38:26Z
• Authors: Carlos Perez-Lara; James Wetzel; Ugur Akgun; Thomas Anderson; Thomas Barbera; Dylan Blend; Kerem Cankocak; Salim Cerci; Nehal Chigurupati; Bradley Cox; Paul Debbins; Max Dubnowski; Buse Duran; Gizem Gul Dincer; Selbi Hatipoglu; Ilknur Hos; Bora Isildak; Colin Jessop; Ohannes Kamer Kos...; Ayben Karasu Uysal; Reyhan Kurt; Berkan Kaynak; Alexander Ledovskoy; Alexi Mestvirishvili; Yasar Onel; Suat Ozkorucuklu; Aldo Penzo; Onur Potok; Daniel Ruggiero; Randal Ruchti; Deniz Sunar Cerci; Ali Tosun; Mark Vigneault; Yuyi Wan; Mitchell Wayne; Taylan Yetkin; Liyuan Zhang; Renyuan Zhu; Caglar Zorbilmez
• Keywords: Silicon Photomultiplier; Lyso-; Calorimeter (particle physics); Thermistor; Air shower

The RADiCAL Collaboration is conducting R&D on high performance electromagnetic (EM) calorimetry to address the challenges expected in future collider experiments under conditions of luminosity and/or irradiation (FCC-ee, FCC-hh, fixed target and forward physics environments). Under development a sampling calorimeter approach, known as modules, based scintillation, wavelength-shifting (WLS) technologies photosensor, including SiPM or SiPM-like technology. modules discussed herein consist alternating layers very dense tungsten (W) absorber scintillating crystal Lutetium Yttrium Orthosilicate LYSO(Ce) plates, assembled depth 25 X0. scintillation signals produced by EM showers region shower maximum (shower max) are transmitted located at upstream/downstream ends via quartz capillaries which penetrate full length module. contain DSB1 organic plastic WLS filaments positioned within max, where energy deposition greatest, then fused with rod elsewhere. wavelength shifted light from this spatially-localized max propagated photosensors. This paper presents results an initial measurement time resolution module over range GeV ≤ E 150 using H2 electron beam CERN. data indicate dependence that follows functional form: σt=a/E⊕b, = 256 ps b 17.5 ps. measured highest for was currently recorded (150 GeV) found be σt 27