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arXiv 1612.03398physics.ins-detnucl-ex
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DAMPE塑料scintillator探测器的温度依赖性

Temperature dependence of the plastic scintillator detector for DAMPE

Zhao-Min Wang, Yu-Hong Yu, Zhi-Yu Sun, Ke Yue, Duo Yan, Yong-Jie Zhang, Yong Zhou, Fang Fang, Wen-Xue Huang, Jun-Ling Chen

摘要:

塑料闪烁体探测器(PSD)是暗物质粒子探测器(DAMPE)计划中的主要子探测器之一。它将在从- $10$到$30^{\circ}$ C的很大温度范围内工作,因此整个检测系统的温度效应需要详细研究。PSD系统的温度依赖性主要由塑料闪烁体棒、光电倍增管(PMT)和前端电子器件(FEE)这三部分组成。对这三个部分进行了详细的研究,得出并讨论了各部分的贡献。PMT的温度系数为$-0.320(\pm0.033)\%/^{\circ}$ C,塑料闪烁体棒的温度系数为$-0.036(\pm0.038)\%/^{\circ}$ C。该结果意味着在减去FEE基座之后,PMT-闪烁体系统的信号幅度由于温度的变化主要来自PMT,并且塑料闪烁体棒在操作范围内对温度不敏感。由于温度效应不可忽略,因此还研究了整个PSD的温度依赖性,并进行了校正以使这种影响最小化。校正结果表明,温度对PSD系统信号幅值的影响可以得到抑制。

英文摘要:

The Plastic Scintillator Detector (PSD) is one of the main sub-detectors in the DArk Matter Particle Explorer (DAMPE) project. It will be operated over a large temperature range from -$10$ to $30^{\circ}$C, so the temperature effect of the whole detection system should be studied in detail. The temperature dependence of the PSD system is mainly contributed by the three parts: the plastic scintillator bar, the photomultiplier tube (PMT), and the Front End Electronics (FEE). These three parts have been studied in detail and the contribution of each part has been obtained and discussed. The temperature coefficient of the PMT is $-0.320(\pm0.033)\%/^{\circ}$C, and the coefficient of the plastic scintillator bar is $-0.036(\pm0.038)\%/^{\circ}$C. This result means that after subtracting the FEE pedestal, the variation of the signal amplitude of the PMT-scintillator system due to temperature mainly comes from the PMT, and the plastic scintillator bar is not sensitive to temperature over the operating range. Since the temperature effect cannot be ignored, the temperature dependence of the whole PSD has been also studied and a correction has been made to minimize this effect. The correction result shows that the effect of temperature on the signal amplitude of the PSD system can be suppressed.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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