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arXiv physics/0403055physics.ins-det
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气体探测器的辐射损伤与长期老化

Radiation Damage and Long-Term Aging in Gas Detectors

Maxim Titov

摘要:

老化现象构成了最复杂和最严重的潜在问题之一,这可能限制或严重损害气体探测器在前所未有的恶劣辐射环境中的使用。在LHC时代的高强度实验中长期运行不仅要求建筑材料和气体混合物具有非凡的辐射硬度,而且还要求在探测器建造和测试期间进行非常具体和适当的组装程序和质量检查。讨论了强子束的最新实验数据。研究表明,辐射测试的初始阶段通常在隔离的实验室条件下进行,可能无法提供推断高能物理设施中真实和全尺寸探测器的长期性能所需的完整信息。总结了影响气体探测器在大定域电离密度下工作能力的主要因素,以及可能导致气体探测器工作不稳定和老化现象的主要因素。最后,概述了老化的经验与国家的最先进的气体探测器在低强度和高强度的辐射环境的实验中,提供了一套规则,以及一些警告,气体探测器在高光度实验的建设和操作的目标。

英文摘要:

Aging phenomena constitute one of the most complex and serious potential problems which could limit, or severely impair, the use of gaseous detectors in unprecedented harsh radiation environments. Long-term operation in high-intensity experiments of the LHC-era not only demands extraordinary radiation hardness of construction materials and gas mixtures but also very specific and appropriate assembly procedures and quality checks during detector construction and testing. Recent experimental data from hadron beams is discussed. It is shown that the initial stage of radiation tests, usually performed under isolated laboratory conditions, may not offer the full information needed to extrapolate to the long-term performance of real and full-size detectors at high energy physics facilities. Major factors, closely related to the capability of operating at large localized ionization densities, and which could lead to operation instabilities and subsequent aging phenomena in gaseous detectors, are summarized. Finally, an overview of aging experience with state-of-the-art gas detectors in experiments with low- and high-intensity radiation environments is given with a goal of providing a set of rules, along with some caveat, for the construction and operation of gaseous detectors in high luminosity experiments.

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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