GERDA实验的离线数据质量监测
Off-line data quality monitoring for the GERDA experiment
摘要：
GERDA是一个寻找Ge-76的无中微子β β衰变的实验。该实验使用了一系列高纯度锗探测器，富含Ge-76，直接浸入液态氩中。GERDA最近开始使用八个浓缩同轴探测器获取物理数据。必须密切监测实验的状况，以便及时发现可能的不稳定性或问题。在线慢速控制系统由定期的数据质量离线监测补充。这确保了数据有资格用于物理分析，并允许拒绝不符合最低质量标准的数据集。离线数据监测完全在软件框架GELATIO内进行。此外，还开发了一个关系数据库，辅之以一个网络界面，以支持离线监测，并自动提供信息，以每日评估数据质量。离线监测工具的概念和性能在一年的试运行阶段得到了测试和验证。
英文摘要：
GERDA is an experiment searching for the neutrinoless ββ decay of Ge-76. The experiment uses an array of high-purity germanium detectors, enriched in Ge-76, directly immersed in liquid argon. GERDA recently started the physics data taking using eight enriched coaxial detectors. The status of the experiment has to be closely monitored in order to promptly identify possible instabilities or problems. The on-line slow control system is complemented by a regular off-line monitoring of data quality. This ensures that data are qualified to be used in the physics analysis and allows to reject data sets which do not meet the minimum quality standards. The off-line data monitoring is entirely performed within the software framework GELATIO. In addition, a relational database, complemented by a web-based interface, was developed to support the off-line monitoring and to automatically provide information to daily assess data quality. The concept and the performance of the off-line monitoring tools were tested and validated during the one-year commissioning phase.
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