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arXiv 1109.6099astro-ph.IM
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MAGIC相机上混合光电探测器R9792U-40的现场测试

Field test of the hybrid photodetector R9792U-40 on the MAGIC camera

T. Y. Saito, S. Sun, R. Orito, E. Lorenz, R. Mirzoyan, M. Teshima, M. Garczarczyk

摘要:

混合光电探测器(HPD)R9792 U-40具有非常高的峰值量子效率(500 nm处的$>50$ %)、出色的电荷分辨率和非常低的后脉冲概率(比目前使用的光电倍增管(PMT)小500倍)。这些特性将提高MAGIC望远镜的灵敏度、能量分辨率和能量阈值。另一方面,需要注意其高光阴极电压(-8至-6kV)、相对短的光阴极寿命和相对大的增益温度依赖性。2010年2月,在MAGIC-II相机的一角安装了6个HPD进行现场测试。在这里,我们报告了现场测试的结果和我们未来的计划。

英文摘要:

The hybrid photodetector (HPD) R9792U-40 has very high peak quantum efficiency ($>50$% at 500 nm), excellent charge resolution and very low after-pulsing probability (500 times less than that of currently used photomultipliers (PMTs)). These features will improve the sensitivity, the energy resolution and the energy threshold of the MAGIC telescope. On the other hand, its high photocathode voltage (-8 to -6 kV), relatively short photocathode lifetime, and relatively large temperature dependence of the gain need to be taken care of. In February 2010, 6 HPDs were installed in a corner of the MAGIC-II camera for a field test. Here we report the results of the field test and our future plans.

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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