Heidelberg 2015 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 30: Instrumentation 10
HK 30.3: Vortrag
Dienstag, 24. März 2015, 17:45–18:00, M/HS1
The Front-End Amplifier for the Silicon Microstrip Sensors of the PANDA MVD — •Valentino Di Pietro1, Kai-Thomas Brinkmann1, Alberto Riccardi1, Angelo Rivetti2, and Manuel Rolo2 — 1II. Physikalisches Institut, JLU Gießen, Germany — 2INFN Sezione di Torino, Italy
The most common readout systems designed for the nuclear physics detectors are based on amplitude measurements. The information that needs to be preserved is the charge delivered by a particle hitting the sensor. The electronic chain employed in these cases is made from two main building blocks: front-end amplifier and ADC. One of the issues associated with the implementation of such an architecture in scaled CMOS technologies is the dynamic range, because the charge information is extrapolated through the sampling of the peak of the front-end output signal. It is therefore interesting to explore the possibility of using time-based architectures offering better performances from that point of view. In fact, in these topologies the linearity between the charge and the signal duration can be maintained even if some building blocks in the chain saturate. The main drawback is the loss in resolution since a duration measurement involves the difference between two time measurements. This work will present the design of a front-end optimized for fast Time-over-Threshold applications. The circuit has been developed for the microstrip detectors of the PANDA experiment. The key features of the front-end amplifier will be illustrated and both schematic level and post-layout simulations will be discussed. Supported by BMBF, HIC for FAIR and JCHP.