F. Brunbauer, F. Garcia, T. Korkalainen, A. Lugstein, M. Lupberger, E. Oliveri, D. Pfeiffer, L. Ropelewski, M. Schinnerl:
"Combined Optical and Electronic Readout For Event Reconstruction in a GEM-based TPC";
IEEE Transactions on Nuclear Science, 65 (2018), 3; S. 6.

Kurzfassung englisch:
Optically read out time projection chambers (TPCs)
based on gaseous electron multipliers (GEMs) combine 3-D
event reconstruction capabilities with high spatial resolution and
charge amplification factors. The approach of reconstructing
particle tracks from 2-D projections obtained with imaging
sensors and depth information from photomultiplier tubes is
limited to specific cases such as straight particle trajectories.
A combination of optical and electronic readout realized by
a semitransparent anode placed between a triple-GEM stack
and a camera in an optically read out TPC has been realized
and used to reconstruct more complex particle tracks. High
spatial resolution 2-D projections combined with a low number
of charge readout channels enable accurate 3-D event topology
reconstruction. Straight alpha tracks as well as more complex
cosmic events have been reconstructed with the presented readout
concept. Relative depth information from electronically read out
charge signals has been combined with drift time information
between primary and secondary scintillation pulses to absolute
alpha track reconstructions.
Index Terms
- Event building, gaseous electron multiplier
(GEM) detectors, micropattern gas chambers, optical signal
detection, particle detectors, position sensitive detectors, propor-
tional gas scintillation detectors, radiation detectors, readout sys-
tems, scintillation detectors, signal reconstruction, time projection
chambers (TPCs).

"Offizielle" elektronische Version der Publikation (entsprechend ihrem Digital Object Identifier - DOI)

Erstellt aus der Publikationsdatenbank der Technischen Universitšt Wien.