Characterization of the QUartz Photon Intensifying Detector (QUPID) for Noble Liquid Detectors

Understand

Dark Matter and Double Beta Decay experiments require extremely low radioactivity within the detector materials.

• For this purpose, the University of California, Los Angeles and Hamamatsu Photonics have developed the QUartz Photon Intensifying Detector (QUPID), an ultra-low background photodetector based on the Hybrid Avalanche Photo Diode (HAPD) and entirely made of ultraclean synthetic fused silica.
• In this work we present the basic concept of the QUPID and the testing measurements on QUPIDs from the first production line.
• Screening of radioactivity at the Gator facility in the Laboratori Nazionali del Gran Sasso has shown that the QUPIDs safely fulfill the low radioactive contamination requirements for the next generation zero background experiments set by Monte Carlo simulations.