Daya Bay Antineutrino Detector gas system
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AbstractThe Daya Bay Antineutrino Detector gas system is designed to protect the liquid scintillator targets of the antineutrino detectors against degradation and contamination from exposure to ambient laboratory air. The gas system is also used to monitor the leak tightness of the antineutrino detector assembly. The cover gas system constantly flushes the gas volumes above the liquid scintillator with dry nitrogen to minimize oxidation of the scintillator over the five year lifetime of the experiment. This constant flush also prevents the infiltration of radon or other contaminants into these detecting liquids keeping the internal backgrounds low. Since the Daya Bay antineutrino detectors are immersed in the large water pools of the muon veto system, other gas volumes are needed to protect vital detector cables or gas lines. These volumes are also purged with dry gas. Return gas is monitored for oxygen content and humidity to provide early warning of potentially damaging leaks. The design and performance of the Daya Bay Antineutrino Detector gas system is described.
All Author(s) ListBand HR, Cherwinka JJ, Chu MC, Heeger KM, Kwok MW, Shih K, Wise T, Xiao Q
Journal nameJournal of Instrumentation
Volume Number7
PublisherIOP Publishing: Hybrid Open Access
LanguagesEnglish-United Kingdom
KeywordsDetector design and construction technologies and materials; Large detector systems for particle and astroparticle physics
Web of Science Subject CategoriesInstruments & Instrumentation; INSTRUMENTS & INSTRUMENTATION

Last updated on 2020-30-11 at 00:30