VIRTUAL ONLY – Neutrino Seminar Series: Selena Neutrino Experiment

  • Feb. 24, 2022, 1:00 pm US/Central

We are pleased to host Prof. Alvaro Chavarria from the University of Washington who will talk about ‘’The Selena Neutrino Experiment’’.

Abstract:
Imaging devices made from an ionization target layer of amorphous selenium (aSe) coupled to a silicon complementary metal-oxide-semiconductor (CMOS) active pixel array for charge readout are a promising technology for neutrino physics. The high spatial resolution in a solid-state target provides unparalleled rejection of backgrounds from natural radioactivity in the search for neutrinoless double beta decay and for solar neutrino spectroscopy with Se-82. We present results on the ionization response of aSe measured from the photoabsorption of 122 keV gamma rays in a single-pixel device, and report on the progress in the fabrication and testing of the first prototype imaging devices based on the Topmetal-II pixelated CMOS charge sensor. We explore the scientific reach of a large neutrino detector with the proposed technology based on our experimental understanding of the device performance.

https://npc.fnal.gov/neutrino-seminar-series/