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arXiv 0709.4409physics.ins-det
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高能质子和带电π介子在钨酸铅量能器晶体中引起损伤的比较

Comparison between high-energy proton and charged pion induced damage in Lead Tungstate calorimeter crystals

P. Lecomte, D. Luckey, F. Nessi-Tedaldi, F. Pauss, D. Renker

摘要:

在LHC的CMS实验的电磁量热计生产的钨酸铅晶体被切成三个等长的部分。中心的一个被290 MeV/c的正π子辐照,最高能量密度为(5.67 +- 0.46)x10^13 /cm ^2,而另外两个被暴露在24 GeV/c的质子能量密度为(1.17 +- 0.11)x10^13/cm ^2。这些晶体在室温下储存在黑暗中,其损伤恢复已经进行了两年多。比较辐射引起的这些晶体的透光率变化表明,损伤与辐射产生的恒星密度成正比。

英文摘要:

A Lead Tungstate crystal produced for the electromagnetic calorimeter of the CMS experiment at the LHC was cut into three equal-length sections. The central one was irradiated with 290 MeV/c positive pions up to a fluence of (5.67 +- 0.46)x10^13 /cm^2, while the other two were exposed to a 24 GeV/c proton fluence of (1.17 +- 0.11) x 10^13/ cm^2. The damage recovery in these crystals, stored in the dark at room temperature, has been followed over two years. The comparison of the radiation-induced changes in light transmission for these crystals shows that damage is proportional to the star densities produced by the irradiation.

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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