Development of a GEM-TPC prototype

Details Development of a GEM-TPC prototype Development of a GEM-TPC prototype

2009-11-04

arxiv.org/abs/0911.0759v1

Physics

Instrumentation and Detectors

5 pages, 4 figures, Proceedings for 11th ICATTP conference in como (italy)

Scientific paper

The use of GEM foils for the amplification stage of a TPC instead of a con- ventional MWPC allows one to bypass the necessity of gating, as the backdrift is suppressed thanks to the asymmetric field configuration. This way, a novel continuously running TPC, which represents one option for the PANDA central tracker, can be realized. A medium sized prototype with a diameter of 300 mm and a length of 600 mm will be tested inside the FOPI spectrometer at GSI using a carbon or lithium beam at intermediate energies (E = 1-3AGeV). This detector test under realistic experimental conditions should allow us to verify the spatial resolution for single tracks and the reconstruction capability for displaced vertexes. A series of physics measurement implying pion beams is scheduled with the FOPI spectrometer together with the GEM-TPC as well.

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