The CLAS12 forward electromagnetic calorimeter

The CLAS12 forward electromagnetic calorimeter
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CLAS12前向电磁热量计

DOI:
10.1016/j.nima.2020.163425
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发表时间:
2020
期刊:
Detectors and Associated Equipment
影响因子:
--
通讯作者:
Griffioen, K.
Griffioen, K.
中科院分区:
--
文献类型:
--
作者:
Asryan, G.;Chandavar, Sh.;Chetry, T.;Compton, N.;Daniel, A.;Dashyan, N.;Gevorgyan, N.;Ghandilyan, Y.;Giovanetti, K.;Griffioen, K.

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CLAS12正向探测器包括六个独立的铅闪烁体电磁采样量热计,以提供初级电子触发并将CLAS12探测能力扩展到光子和中子。每个量热计包由两个模块组成,一个是CLAS探测器中以前使用的传统电磁量热计(EC),另一个是位于EC前面的新的预簇射量热计(PCAL),用于延长探测器的总辐射长度,以完全吸收能量高达12 GeV的电子引起的电磁簇射。这两种量热计都使用了一种新颖的三角形速描器几何形状,并具有立体读出功能。PCAL使用升级的设计来提供重建π 0和η衰变所需的高空间分辨率,以及高效率的中子。本文论述了PCAL的设计、建造和校准,以及两种探测器的初步综合性能。
Abstract The CLAS12 Forward Detector includes six independent lead-scintillator electromagnetic sampling calorimeters to provide the primary electron trigger and extend the CLAS12 detection capability to photons and neutrons. Each calorimeter package consists of two modules, the legacy Electromagnetic Calorimeter (EC) previously used in the CLAS detector, and a new pre-shower calorimeter (PCAL) located in front of the EC to extend the total detector radiation length, in order to fully absorb the electromagnetic showers induced by electrons with energies up to 12 GeV. Both calorimeters use a novel triangular hodoscope geometry with stereo readout. The PCAL uses an upgraded design to provide the high spatial resolution necessary for reconstructing π 0 and η decays, and neutrons with high efficiency. This paper treats the design, construction, and calibration of the PCAL and the preliminary combined performance of both detectors.
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DOI: --
发表时间: 2020
期刊: Nuclear Instruments and Methods in Physics Research Section A : Accelerators, Spectrometers, Detectors and Associated Equipment
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