arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 2001.06553physics.ins-dethep-ex
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在CMS强子端盖量能器中用硅光电倍增管测量塑料scintillator瓦辐射损伤的剂量率效应

Measurements with silicon photomultipliers of dose-rate effects in the radiation damage of plastic scintillator tiles in the CMS hadron endcap calorimeter

CMS Collaboration

摘要:

测量了CMS探测器强子端盖(HE)量热计中使用的塑料闪烁体瓦由于辐射损伤而导致的信号输出的减少。瓷砖暴露在质子-质子(pp)碰撞产生的粒子在欧洲核子研究中心大型强子对撞机与质心能量为13 TeV,对应于50 fb $^{-1}$交付的光度。的测量是基于读出通道的HE仪器与硅光电倍增器,并来自使用数据从几个来源:激光校准系统,一个可移动的放射性源,以及强子和μ子产生的PP碰撞。结果从几个辐照运动使用$^{60}$钴源进行了讨论。损伤呈现为剂量率的函数。在这些测量的范围内,对于固定剂量,损伤随剂量率的降低而增加。

英文摘要:

Measurements are presented of the reduction of signal output due to radiation damage for plastic scintillator tiles used in the hadron endcap (HE) calorimeter of the CMS detector. The tiles were exposed to particles produced in proton-proton (pp) collisions at the CERN LHC with a center-of-mass energy of 13 TeV, corresponding to a delivered luminosity of 50 fb$^{-1}$. The measurements are based on readout channels of the HE that were instrumented with silicon photomultipliers, and are derived using data from several sources: a laser calibration system, a movable radioactive source, as well as hadrons and muons produced in pp collisions. Results from several irradiation campaigns using $^{60}$Co sources are also discussed. The damage is presented as a function of dose rate. Within the range of these measurements, for a fixed dose the damage increases with decreasing dose rate.

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