The readout of a GEM or Micromegas-equipped TPC by means of the Medipix2 CMOS sensor as direct anode

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.

TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering hsv//eng
GEM; Micromegas; Medipix2; TPC; Pixel; Pixel-segmented anode
Electrical engineering, electronics and photonics
Elektroteknik, elektronik och fotonik

Ingår i:Nuclear Instruments and Methods in Physics Research Section A535:1-2, s. 506-5100168-90021872-9576

Av författaren/redakt...: Colas, P; Colijn, A P; Fornaini, A; Giomataris, Y; van der Graaf, H; Heijne, E H M; visa fler...; Llopart Cudié, X ...; Schmitz, J; Timmermans, J; Visschers, J L; visa färre...

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