VCI2019 - The 15th Vienna Conference on Instrumentation

18-22 February 2019
Vienna University of Technology
Europe/Vienna timezone

CMOS based SPAD Arrays for the Detection of Rare Photon Events at Cold Temperatures

Not scheduled
15m
Vienna University of Technology

Vienna University of Technology

Gusshausstraße 27-29, 1040 Wien
Board: 99
Poster SiPM

Speaker

Michael Keller (Heidelberg University)

Description

We have operated a 2D array of $88 \times 88$ Single Avalanche Photo Diodes fabricated in a CMOS technology in liquid nitrogen to evaluate its dark count rate at low temperatures. We found a rate of <20 dark counts per second and per $mm^2$ equivalent active area and observed an additional background at the edge of the array, which we attribute to photons emitted in the peripheral circuitry. The low dark count rate in combination with good timing information and excellent spatial resolution may lead to novel applications of such chips, like for instance search experiments using liquid Argon or Xenon. As a next step, we have therefore developed a 2D array with high fill factor and with a very low power, data-driven readout architecture.

Primary authors

Peter Fischer (Heidelberg University) Michael Keller (Heidelberg University)