Shashlyk-type electromagnetic calorimeter (ECal) of the Multi-Purpose Detector at heavy-ion NICA collider is optimized to provide precise spatial and energy measurements for photons and electrons in the energy range from about 40 MeV to 2-3 GeV. To deal with high multiplicity of secondary particles from Au-Au reactions, ECal has a fine segmentation and consists of 38,400 cells ("towers"). Given the big number of "towers" and the time constraint, it is not possible to calibrate every ECal "tower" with beam. In this paper, we describe the strategy of the first-order calibration of ECal with cosmic muons.

中文翻译：

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用μ子校准MPD电磁量热仪

重离子 NICA 对撞机多用途探测器的 Shashlyk 型电磁量热仪 (ECal) 经过优化，可为约 40 MeV 至 2-3 GeV 能量范围内的光子和电子提供精确的空间和能量测量。为了处理来自 Au-Au 反应的大量次级粒子，ECal 具有精细分割并由 38,400 个单元（“塔”）组成。鉴于“塔”的数量众多且时间有限，不可能用光束校准每个 ECal“塔”。在本文中，我们描述了用宇宙 μ 子对 ECal 进行一阶校准的策略。