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Abstract:
The Gamma-Ray and AntiMatter Survey (GRAMS) is a next-generation experiment using a Liquid Argon Time Projection Chamber (LArTPC) detector to detect gamma rays and antiparticles. Gamma-ray surveys are important for understanding multi-messenger and time-domain astronomy, enabling exploration of the universe’s most potent events, such as supernovae and neutron star mergers etc. Despite the significance of MeV gamma-rays, GRAMS could also explore the so-called ’MeV gap’ region to improve MeV gamma-ray
measurement sensitivity that was restricted by the hardness of accurately reconstructing Compton events. Aside from gamma-ray detection, the GRAMS proposed method also serves as an antiparticle spectrometer, targeting low-energy range cosmic-ray measurement. This talk will provide updates on the current status and progress towards the first prototype
balloon flight with a small-scale LArTPC (pGRAMS) scheduled for early 2026, as well as the recent progress on antihelium-3 sensitivity calculation.
Biography:
Jiancheng Zeng (曾健成) got his bachelor's degree in physics working on PHENIX experiment simulation at Sun Yat-Sen university (2018). After moving to Northeastern University in Boston, he worked on FPGA data acquisition system for two years during his master program and first year of PhD. Then he developed research interests on dark matter indirect detection with cosmic rays and joined two balloon projects GAPS (General Antiparticle Spectrometer) and GRAMS (Gamma-Ray and Antimatter Survey) in 2021. He has been the key person for both projects leading on thermal and detector system respectively, and expect to receive his Ph.D. degree in early 2026.
Host: Prof. Mengjiao Xiao
Alternative online link：https://meeting.tencent.com/dm/3QsEAa8ev8RS
Id: 718740387 password: 123456