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SUMMARY:SuperEM: a Sub-meV Threshold Cryogenic Detector for Neutrino and D
 ark Matter Searches
DTSTART:20260903T020000Z
DTEND:20260903T040000Z
DTSTAMP:20260908T145000Z
UID:indico-event-30586@indico.ihep.ac.cn
DESCRIPTION:Speakers: Xilei SUN (IHEP)\n\nAbstract:\n\nExploring the Sub-G
 eV frontier for Light Dark Matter (LDM)\, resolving the Cosmic Neutrino Ba
 ckground (CνB)\, and observing Coherent Elastic Neutrino-Nucleus Scatteri
 ng (CEνNS) require detectors with strictly sub-meV energy thresholds and 
 massive multiplexing capabilities. Historically\, achieving sub-meV thresh
 olds alongside nanosecond timing and scalability has represented an “imp
 ossible triangle” for cryogenic sensors. In this presentation\, the spea
 ker will introduce the SuperEM (Superconductor-Coupled Semiconductor Elect
 ron-Multiplying) detector architecture\, a novel S-I-P-N framework designe
 d to overcome these limitations. By integrating a superconducting absorber
  (S-Layer)\, a quantum tunneling barrier (I-Layer)\, and a charge multipli
 cation region (P-N Junction)\, the SuperEM scheme achieves a sub-meV thres
 hold\, high gain\, and a nanosecond-level non-thermal equilibrium response
  while maintaining compatibility with scalable semiconductor processes.\n\
 n \n\nAbout the speaker:\n\nDr. Xilei Sun is a researcher at the Institut
 e of High Energy Physics (IHEP). His research focuses on advanced radiatio
 n detection technologies\, space astronomy instrumentation\, and low-backg
 round neutrino and dark matter experiments. Dr. Sun served as co-proposer 
 and prototype developer for the 5-sided sensitive 3D imaging calorimeter o
 f HERD (scheduled for launch in 2029) and led the proposal and development
  of the SiPM+LaBr3 space gamma-ray detector on GECAM (launched in 2020). H
 e also proposed and prototyped both a dual-scintillating crystal scheme fo
 r dark matter detection and a cryogenic CsI detector for coherent elastic 
 neutrino-nucleus scattering (CEνNS). In engineering leadership\, Dr. Sun 
 served as task leader for the 20\,000-ton ultrapure liquid scintillator mi
 xing for the JUNO experiment (completed August 2025). He also led a key R&
 D project on ultra-high energy resolution and multi-modal radiation detect
 ors (completed October 2025)\, which earned the Special Prize of the Chine
 se Society of Radiation Protection Science and Technology Award. Currently
 \, Dr. Sun is pioneering the SuperEM scheme—a sub-meV\, ultra-low thresh
 old superconductor-coupled semiconductor detector targeting next-generatio
 n neutrino and dark matter searches.\n\n----\n\nMeeting ID 会议号: 9313
 5039453\nMeeting URL 会议链接:: https://zoom.us/j/93135039453?pwd=L6nH
 YMbZmpzysMaacR2kZwB53yDJcD.1\nHostKey 主持人密钥: 556578\nPassword 
 会议密码: 260903\n\nhttps://indico.ihep.ac.cn/event/30586/
LOCATION:B410 (Main Building)
URL:https://indico.ihep.ac.cn/event/30586/
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