May 24 – 28, 2021
America/Vancouver timezone

A dedicated SiPMs array for GRD of GECAM

May 25, 2021, 5:48 AM
Parallel session talk Experiments: Space and particle astrophysics Experiments: Space and Particle Astrophysics


Xilei Sun (IHEP)


The discovery of gravitational waves and their gamma bursts has opened the era of multi messenger astronomy. China's Gravitational wave high energy Electromagnetic Counterpart All-sky Monitor (GECAM) uses two small satellites to monitor gamma-ray bursts in an all-sky field of view. It has a quasi-real-time gamma-ray burst broadcast capability and will play an important role in the location of gravitational wave sources and subsequent observations. Each GECAM small satellite is equipped with 25 3-inch diameter gamma ray detectors (GRD), which can cover 8 keV-2 MeV. GRD uses SiPMs instead of PMT to adapt to the size constraints of micro-satellite platforms, and uses high light yield lanthanum bromide crystals to lower the threshold to 8 keV. A unique 3-inch circular SiPMs array has been designed, using 64 6x6 mm chips, uniformly arranged in a circular shape. This presentation will introduce the status of GECAM and then focus on the SiPMs array, includes its design and performance.

Funding information the Key Research Program of Frontier Sciences, Chinese Academy of Sciences (Grant NO. QYZDB-SSW-SLH012)
TIPP2020 abstract resubmission? No, this is an entirely new submission.

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