Frankfurt 2014 – wissenschaftliches Programm
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HK: Fachverband Physik der Hadronen und Kerne
HK 6: Instrumentierung
HK 6.1: Vortrag
Montag, 17. März 2014, 14:00–14:15, HZ 8
TDC for the front end architecture in the PANDA MVD — •Alberto Riccardi1, Kai Thomas Brinkmann1, Valentino Di Pietro1, Sara Garbolino2, Angelo Rivetti2, and Manuel Rolo2 for the PANDA collaboration — 1II Physikalisches Institut Justus-Liebig-Universität Giessen, Giessen, Germany — 2INFN Sezione di Torino, Torino, Italy
In nuclear detectors the information on the energy of the particle is usually obtained by measuring the amplitude of the signal delivered by the sensor. The low voltage power supply used in modern deep submicron technologies constrains the maximum dynamic range of the ADC. So we can obtain the energy information with time-based techniques, in which the energy is associated with the duration of the signal through the Time over Threshold method. This work is focused on the PANDA Micro Vertex Detector and explores the possibility of applying a time-based readout approach for the microstrip sensors. In PANDA , the strip system must cope with hit rates up to 50 kHz per channel. Therefore, the front-end output must be relatively short. This implies that the clock resolution is not enough to measure the signal duration, so it is necessary to use a Time to Digital Converter. The front-end and the TDC structure are designed in a 0.11um CMOS process. The TDC chosen is based on an analog clock interpolator because it combines good time resolution with a fairly simple implementation and low power consumption. In the presentation the architectures with their will be described and the challenges associated to its implementation discussed. Supported by BMBF, HGS-HIRe and JCHP.