Bonn 2010 – scientific programme
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HK: Fachverband Physik der Hadronen und Kerne
HK 48: Instrumentierung VIII
HK 48.7: Talk
Thursday, March 18, 2010, 15:30–15:45, HG VIII
A demonstrator for the CBM Time Of Flight wall electronic readout chain — •Pierre-Alain Loizeau1, Norbert Herrmann1, Mircea Ciobanu2, Harald Deppe2, Holger Flemming2, Jochen Frühauf2, Karsten Koch2, Serguey Linev2, Sebastian Manz3, and Walter F.J. Müller2 — 1Physikalisches Institut, Universität Heidelberg, Heidelberg, Germany — 2GSI Helmholtzzentrum für Schwerionenforschung GmbH, Darmstadt, Germany — 3Kirchhoff-Institut für Physik, Universität Heidelberg, Germany
The Compressed Baryonic Matter (CBM) experiment at FAIR requires a time resolution better than 80ps for its Time of Flight (ToF) wall in order to achieve the particle identification goals necessary to perform its physics program.
This implies a 40ps limit in the total electronic resolution. Following the concept of the CBM detector readout, the timing system has to operate in self-triggered mode, where each hit receives a time stamp. The demonstrator consists of a high bandwidth preamplifier discriminator, an event-driven TDC, clock generation and distribution system, a dedicated Readout Controller and an optical readout interface. To allow the usage of existing systems as reference, the demonstrator includes synchronization mechanisms with triggered systems. The scheme is kept strictly differential to suppress common mode sensitivity.
The concept of the demonstrator and first results obtained with the CBM software environment will be presented.
This work was supported by BmBF 06HD9121i.