Grace Cummings - "Status of dual readout homogenous inorganic optical calorimetry and precision timing"

Thursday 24 Apr 2025, 15:00 → 17:00 US/Eastern

Small Seminar Room (510)

The Calvision project seeks to develop high resolution calorimetry with state-of-the-art performance for both electromagnetic and hadronic signatures using the dual-readout technique. We seek to improve the hadronic energy resolution of homogeneous scintillating-crystal calorimeters through the measurement and separation of the scintillation and Cherenkov light produced in hadronic showers -- with the Cherenkov light serving as the proxy for the relativistic, or “electromagnetic”, component of the shower. With this extra information, the differing response between the relativistic and non-relativistic components, both of which contribute to scintillation, can be accounted for. In April 2024, CalVision performed single-crystal tests using the electron test beam at DESY. Using a single delay line technique for waveform analysis, sufficient Cherenkov light can be extracted to fully capitalize on the dual readout technique.  This talk will present the results of various crystals, and two novel scintillating glasses. While the research program predominantly focuses on energy resolution through studies of materials, sensors, and readout, the prompt nature of Cherenkov light teases precision timing capabilities. A few select timing results using proton data will also be discussed.

 

Hosted by: Elizabeth Brost (BNL)