0000000000949795

AUTHOR

X.h. Ma

showing 2 related works from this author

ARGO-YBJ constraints on very high energy emission from GRBs

2009

The ARGO-YBJ (Astrophysical Radiation Ground-based Observatory at YangBaJing) experiment is designed for very high energy $\gamma$-astronomy and cosmic ray researches. Due to the full coverage of a large area ($5600 m^2$) with resistive plate chambers at a very high altitude (4300 m a.s.l.), the ARGO-YBJ detector is used to search for transient phenomena, such as Gamma-ray bursts (GRBs). Because the ARGO-YBJ detector has a large field of view ($\sim$2 sr) and is operated with a high duty cycle ($>$90%), it is well suited for GRB surveying and can be operated in searches for high energy GRBs following alarms set by satellite-borne observations at lower energies. In this paper, the sensitivit…

Physics010308 nuclear & particles physicsAstrophysics::High Energy Astrophysical PhenomenaSettore FIS/01 - Fisica SperimentaleDetectorGamma rayAstrophysics::Instrumentation and Methods for AstrophysicsAstronomyAstronomy and AstrophysicsCosmic rayField of viewAstrophysicsRadiation7. Clean energy01 natural sciencesSettore FIS/05 - Astronomia e Astrofisica13. Climate actionDuty cycleObservatory0103 physical sciencesGAMMA RAY BURSTS GAMMA RAYS COSMIC RAYS EXTENDED AIR SHOWERSGamma-ray burstAstrophysics - High Energy Astrophysical Phenomena010303 astronomy & astrophysics
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Temperature effect on RPC performance in the ARGO-YBJ experiment

2009

The ARGO-YBJ experiment has been taking data for nearly 2 years. In order to monitor continuously the performance of the Resistive Plate Chamber detectors and to study the daily temperature effects on the detector performance, a cosmic ray muon telescope was setup near the carpet detector array in the ARGO-YBJ laboratory. Based on the measurements performed using this telescope, it is found that, at the actual operating voltage of 7.2kV, the temperature effect on the RPC time resolution is about 0.04ns/degrees C and on the particle detection efficiency is about 0.03%/degrees C. Based on these figures we conclude that the environmental effects do not affect substantially the angular resoluti…

Nuclear and High Energy PhysicsPhysics::Instrumentation and DetectorsAstrophysics::High Energy Astrophysical PhenomenaCosmic rayEfficiencytelescopelaw.inventionTelescopeOpticslawAngular resolutionOperating voltagetime resolutionInstrumentationArgoPhysicsMuonbusiness.industryDetectorSettore FIS/01 - Fisica SperimentaleAstrophysics::Instrumentation and Methods for AstrophysicsTime resolutionTime resolutionCosmic Ray TelescopeefficiencyRPCHigh Energy Physics::Experimentbusiness
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