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DTSTART:20250101T000000
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DTSTART;TZID=UTC:20251120T160000
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SUMMARY:Speaker: Xiaochen Ni (University of Washington) - Title: Development of TopmetalSe: CMOS/aSe Hybrid Detectors for Neutrino Physics
DESCRIPTION:Research Progress Meeting \nDate: November 20\, 2025 \nTime: 4:00- 5:00 pm \nLocation: Sessler Conference Room- 50A-5132 [In-Person and HYBRID]  \nSpeaker: Xiaochen Ni (University of Washington) \nTitle: Development of TopmetalSe: CMOS/aSe Hybrid Detectors for Neutrino Physics \nAbstract: The Selena experiment couples an amorphous selenium (aSe) ionization target to a complementary metal–oxide–semiconductor (CMOS) pixel array as an imaging detector for next-generation neutrino physics. Hybrid a-Se/CMOS detectors provide a unique combination of high-Z stopping power\, direct charge conversion\, and fine-pitch pixel imaging. These properties enable precise reconstruction of ionization tracks with excellent spatial resolution\, allowing for low-background measurements with advanced event classification. In this talk\, I will present Selena’s capabilities for a neutrinoless double-beta decay search and share the ongoing detector R&D\, including the design\, fabrication\, and characterization of its first prototype pixel array\, TopmetalSe\, produced in the SkyWater 130 nm open-source CMOS process. \nhttps://lbnl.zoom.us/j/98854322464?pwd=K2tKUm1VZjRlV1J5RHE3cXdHQzRxdz09 \nMeeting ID: 988 5432 2464\n\nPasscode: 142239
URL:https://rpm.physics.lbl.gov/event/speaker-xiaochen-ni-university-of-washington-title-development-of-topmetalse-cmos-ase-hybrid-detectors-for-neutrino-physics/
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