Performance and shower shape studies with EPICAL-2

IF 1.4 3区物理与天体物理 Q3 INSTRUMENTS & INSTRUMENTATION

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment Pub Date : 2025-08-23 DOI:10.1016/j.nima.2025.170954

J. Keul , J. Alme , R. Barthel , V. Borshchov , R. Bosley , A. van den Brink , H. Büsching , O.S. Groettvik , T. Peitzmann , F. Pliquett , M. Protsenko , K. Røed , T.S. Rogoschinski , D. Röhrich , M.J. Rossewij , J. Schöngarth , E.H. Solheim , N.B. Sundstrom , I. Tymchuk , K. Ullaland , H. Yokoyama

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引用次数: 0

Abstract

A prototype of a novel digital electromagnetic calorimeter, EPICAL-2, has been developed. The R&D is performed in the context of the ALICE-FoCal and is closely related to studies of imaging in proton CT. Digital calorimetry also proves promising for future collider projects such as EIC, ILC, CLIC, or FCC. Based on a proof-of-principle with a first prototype, EPICAL-2 has been constructed as an advanced second prototype. EPICAL-2 consists of 24 layers with alternating tungsten absorbers and ALPIDE MAPS. The design features an active area of approximately

27 x 30 {mm}^{2}

and a depth of 20 radiation lengths, totaling over 25 million pixels. EPICAL-2 test-beam measurements were performed at DESY in February 2020 and CERN-SPS in September 2021. Simulations of the EPICAL-2 detector have been carried out with the Allpix

^{2}

framework. Performance studies with EPICAL-2 show promising energy response and resolution. Beyond its main calorimetric abilities, EPICAL-2 allows for detailed shower shape studies. Measurements of the longitudinal and lateral shower shape and the Molière radius have been carried out, indicating strong shower separation power of the EPICAL-2’s design.

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EPICAL-2的性能和淋浴形状研究

研制了一种新型数字电磁量热计EPICAL-2的样机。研发是在ALICE-FoCal的背景下进行的，与质子CT成像的研究密切相关。数字量热法也证明了未来对撞机项目的前景，如EIC， ILC， CLIC或FCC。在第一个原型机的原理验证基础上，EPICAL-2已经建成了一个先进的第二个原型机。EPICAL-2由24层交替钨吸收器和ALPIDE MAPS组成。该设计的活动面积约为27x30mm2，深度为20个辐射长度，总计超过2500万像素。EPICAL-2测试光束测量于2020年2月在DESY进行，并于2021年9月在CERN-SPS进行。利用Allpix2框架对EPICAL-2探测器进行了仿真。EPICAL-2的性能研究显示出良好的能量响应和分辨率。除了其主要的热量测量能力，EPICAL-2允许详细的淋浴形状研究。对纵向和横向淋浴形状以及moli半径进行了测量，表明EPICAL-2的设计具有强大的淋浴分离能力。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Nuclear Instruments & Methods in Physics Research Section A-accelerators Spectrometers Detectors and Associated Equipment 物理-光谱学

CiteScore

3.20

自引率

21.40%

发文量

787

审稿时长

1 months

期刊介绍： Section A of Nuclear Instruments and Methods in Physics Research publishes papers on design, manufacturing and performance of scientific instruments with an emphasis on large scale facilities. This includes the development of particle accelerators, ion sources, beam transport systems and target arrangements as well as the use of secondary phenomena such as synchrotron radiation and free electron lasers. It also includes all types of instrumentation for the detection and spectrometry of radiations from high energy processes and nuclear decays, as well as instrumentation for experiments at nuclear reactors. Specialized electronics for nuclear and other types of spectrometry as well as computerization of measurements and control systems in this area also find their place in the A section. Theoretical as well as experimental papers are accepted.