The concept of a hybrid readout of a time projection chamber is presented. It combines a GEM-based amplification and a pad-based anode plane with a pixel chip as readout electronics. This way, a high granularity enabling to identify electron clusters from the primary ionisation is achieved as well as flexibility and large anode coverage. The benefits of this high granularity, in particular for dE/dx measurements, are outlined and results of a simulation-based performance study are given. The structure of the first prototype board is discussed, including adaptions based on a very preliminary first measurement for a second production towards a proof-of-principle.
@article{arxiv.1801.07178,
title = {ROPPERI - A TPC readout with GEMs, pads and Timepix},
author = {Ulrich Einhaus and Jochen Kaminksi and Michele Caselle},
journal= {arXiv preprint arXiv:1801.07178},
year = {2018}
}
Comments
Talk presented at the International Workshop on Future Linear Colliders (LCWS2017), Strasbourg, France, 23-27 October 2017. C17-10-23.2. arXiv admin note: text overlap with arXiv:1703.08529