Frankfurt 2014 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 46: Poster

HK 46.74: Poster

Thursday, March 20, 2014, 16:00–18:00, HZ Poster

Development of a cooling system and vacuum chamber for the pion tracker for HADES — Tobias Schmitt and •Joana Wirth for the HADES collaboration — TU München, James-Franck-Straße, D-85748 Garching

One of the future experiments planned at SIS18 with the HADES spectrometer in GSI Darmstadt envisages the employment of a pion beam colliding on a LH2 or a nuclear target. Due to the fact that the secondary pion beam has a high momentum spread, the momentum for each induvidual pion has to be measured for the planned exclusive measurements.

For this purpose our group develops a pion tracking system, consisting of two double sided striped silicon detectors. Both will be located at different positions in the beamline in front of the HADES experiment, therefore they have to deal with high particle rates. Considering the detection of pions (MIPs), the noise of the detectors has to have a very small level. This can be achieved by cooling.

For now the final version of the detector chamber and cooling system has been built and is currently tested. The proposed poster will show the current status and performance of the cooling system for the silicon detector, focusing on the reduction of the leakage current and the noise.

This work is supported by the Excellence Cluster Universe.