Abstract
We have applied the Medipix2 pixel CMOS chip as direct anode readout for a TPC. For the gas amplification two options have been investigated: (i) a three-stage GEM system and (ii) a Micromegas mesh. The structure of the cloud of primary electrons, left after interactions of 55Fe quanta with the gas is visible with unprecedented precision. This proof-of-principle is an essential step in our project to realize a monolithic pixel sensor with integrated Micromegas, to be developed specially for the readout of TPCs, and applicable for drift chambers in general. © 2004 Elsevier B.V. All rights reserved.
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Colas, P., Colijn, A. P., Fornaini, A., Giomataris, Y., Van Der Graaf, H., Heijne, E. H. M., … Visschers, J. L. (2004). The readout of a GEM or Micromegas-equipped TPC by means of the Medipix2 CMOS sensor as direct anode. In Nuclear Instruments and Methods in Physics Research, Section A: Accelerators, Spectrometers, Detectors and Associated Equipment (Vol. 535, pp. 506–510). Elsevier. https://doi.org/10.1016/j.nima.2004.07.180
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