Münster 2017 – wissenschaftliches Programm

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HK: Fachverband Physik der Hadronen und Kerne

HK 63: Instrumentation XIV

HK 63.7: Vortrag

Freitag, 31. März 2017, 15:30–15:45, F 072

Towards new analog read-out electronics for the HADES drift chamber system — •Michael Wiebusch for the HADES collaboration — Goethe-Universität, Frankfurt

Track reconstruction in HADES is realized with 24 planar, low-mass drift chambers (MDC). About 27000 drift cells provide both, precise spatial information of track hit points and energy loss information. In order to handle high rates and track densities required at the future SIS100 accellerator at FAIR, an upgrade of the MDC system is necessary. This involves new front-end electronics, as the original analog read-out ASIC (ASD8) is no longer procurable. A promising replacement read-out chip candidate is the PASTTREC ASIC (developed at Jagiellonian University, Krakow), which is currently at the focus of our investigations. This contribution will present the test procedures employed to evaluate the compatibility of the ASIC with the drift chambers w.r.t. spatial/energy resolution and detection efficiency. Also a cost-efficient and lightweight FPGA-based prototype TDC is used, which is foreseen to replace the TDC ASICs presently used. To arrive at conclusive performance results, the tests have to be conducted under realistic conditions in direct comparison to the present ASICs.
This work has been supported by BMBF (05P15RFFCA), GSI, HGS-HIRe and HIC for FAIR.