Gaseous electron multiplier gain characteristics using low-pressure Ar/CO2

A TPC Detector for Studying Photo-nuclear Reactions at Astrophysical Energies with Gamma-ray Beams at ELI--NP

“…Over the past 20 years, several experimental groups studied the operation of GEM-like structures at low gas pressures. Apart from standard chemically etched 50-µm-thick polyimide GEM foils [6,7], different thick-GEM structures (100 µm-3.2 mm) made of PCBs, liquid crystal polymers and ceramics were tested [8][9][10][11][12][13][14][15]. Still, with exception of Ref.…”