In recent years Gas Electron Multipliers have proven to be reliable amplification stages at high beam rates, and can be used also in Time Projection Chambers. Our group developed a 1 dm3 active volume double-GEM TPC, with spatial resolution of 50 μm and 280 μm. Custom designed FPGA data acquisition system enables rate capability for about 100 kHz⋅mm−2, providing excellent track-by-track position and angular information, better than 0.1 mm and 1 mrad respectively. The wide dynamic range of the system enables identification from 4He up to 86Kr using ionization measurement. Two of these TPCs are planned to operate in tandem mode to filter off-time particles and to achieve a superior angular resolution.
@article{arxiv.2009.02101,
title = {A GEM based TPC for beam monitoring},
author = {Gábor Galgóczi and Gergő Hamar and Péter Pázmándi and Dezső Varga},
journal= {arXiv preprint arXiv:2009.02101},
year = {2020}
}