Typ

Artikel in einem Journal

Gebiet

Detektorentwicklung

Autor

C. Brezina, K. Desch, J. Kaminski, M. Killenberg, T. Krautscheid

Titel

Operation of a GEM-TPC with pixel readout

Datum

2012-11

Reportnummer

IEEE TNS, Vol. 59, No. 6, December 2012, pp. 3221-3228

Kurzfassung

A prototype time projection chamber with 26 cm drift length was operated with a short-spaced triple gas electron multiplier (GEM) stack in a setup triggering on cosmic muon tracks. A small part of the anode plane is read out with a CMOS pixel application-specified integrated circuit (ASIC) named Timepix, which provides ultimate readout granularity. Pixel clusters of charge depositions corresponding to single primary electrons are observed and analyzed to reconstruct charged particle tracks. A dataset of several weeks of cosmic ray data is analyzed. The number of clusters per track length is well described by simulation. The obtained single point resolution approaches 50 $mu$m at short drift distances and is well reproduced by a simple model of single-electron diffusion.

Journal

doi:10.1109/TNS.2012.2220981