The Fast Read-out System for the MAPMTs of COMPASS RICH-1

Details The Fast Read-out System for the MAPMTs of COMPASS RICH-1 The Fast Read-out System for the MAPMTs of COMPASS RICH-1

2007-12-12

arxiv.org/abs/0712.1964v2

Nucl.Instrum.Meth.A595:204-207,2008

Physics

Instrumentation and Detectors

Proceeding of RICH2007 Conference, Trieste, Oct. 2007. v2: minor changes

Scientific paper

10.1016/j.nima.2008.07.063

A fast readout system for the upgrade of the COMPASS RICH detector has been developed and successfully used for data taking in 2006 and 2007. The new readout system for the multi-anode PMTs in the central part of the photon detector of the RICH is based on the high-sensitivity MAD4 preamplifier-discriminator and the dead-time free F1-TDC chip characterized by high-resolution. The readout electronics has been designed taking into account the high photon flux in the central part of the detector and the requirement to run at high trigger rates of up to 100 kHz with negligible dead-time. The system is designed as a very compact setup and is mounted directly behind the multi-anode photomultipliers. The data are digitized on the frontend boards and transferred via optical links to the readout system. The read-out electronics system is described in detail together with its measured performances.

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