12-20 July 2017
Asia/Seoul timezone
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BEXCO - Room F(201/202/203/204)

[CRD023] Leak test for liner of muon detector of LHAASO


  • Lingyu WANG

Primary authors


Muon detector (MD) is water Cherenkov detector in Large High Altitude Air Shower Observatory (LHAASO) experiment. The liner is applied to seal 44 ton ultra-pure water, which is the major detection media of MD. The liner must protect the water from contamination and inhibit bacteriological activities. The MD conducts a long duration mission (~20 years), so any significant leak would have severe consequences. The purpose of this paper is to introduce leak test for liner of MD. A new method of SF6 tracer gas leak checking is proposed by using a SF6 quantitative determination instrument with a high resolution (0.01ppm). This method has quick response time and high sensitivity to the small hole (diameter<0.2mm).