Dresden 2013 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 35: Instrumentation
HK 35.3: Vortrag
Dienstag, 5. März 2013, 14:45–15:00, WIL-A221
Development of the Pion Tracker for HADES spectrometer — •Rafal Lalik — Excellence Cluster “Universe”, TU München, Boltzmannstr.2, 85748 Garching, Germany
We are working on the development of the beam detector for experiments with pion beams at HADES spectrometer in GSI Darmstadt. Pions are created impacting nitrogen or proton beams on a secondary beryllium target and are then delivered through a chicane to the experimental areas. The expected momentum spread of the secondary pion beam is about 8% and the main goal of this beam detector is to deliver information about the pion momentum for each beam particle.
The challenging issue is to achieve an accurate measurement (≈ ) of each pion in a high intensity (108 part./spill) environment along the pion-bean chicane. This translates into a rate of 106 pion/spill with a kinetic energy of 1–2 GeV at the HADES target point.
We are currently testing a tracker system, based on double-sided silicon strips detectors with higher radiation hardness and n-XYTER ASIC readout. For prototyping we have prepared the acquisition system compatible with the CBM data acquisition system, for the future employment with HADES we are currently working on acquisition based on the novel TRB3 board.
In this talk we are showing current status and performance of the system, and recent results obtained in the laboratory and with proton beams.