Time resolution of a Thick Gas Electron Multiplier (THGEM) - based detector

TL;DR

This paper measures the time resolution of a double-stage THGEM detector using UV-photons and relativistic electrons, demonstrating sub-10 nanosecond precision for various particle types.

Contribution

It provides the first detailed measurements of THGEM detector time resolution with both UV-photons and electrons, highlighting its potential for fast timing applications.

Findings

Time resolution of 8-10ns RMS for single photoelectrons

0.5-1ns RMS for multiple photoelectrons per photon pulse

Approximately 10ns RMS time resolution for relativistic electrons

Abstract

The time resolution of a double-stage Thick-GEM (THGEM) detector was measured with UV-photons and relativistic electrons. The photon detector, with semitransparent- or reflective-photocathode yielded time resolution of about 8-10ns RMS for single photoelectrons and 0.5-1ns RMS for few-hundred photoelectrons per photon-pulse. Time resolution of about 10ns RMS was recorded for relativistic electrons from a 106Ru source.