München 2019 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 24: Instrumentation V

HK 24.6: Talk

Tuesday, March 19, 2019, 15:15–15:30, HS 11

A Sampling ADC-Readout for the Crystal Barrel Calorimeter - Pile-Up Detection and Recovery — •Jan Schultes for the CBELSA/TAPS collaboration — HISKP, Universität Bonn

The Crystal Barrel Calorimeter consists of 1320 CsI(Tl) scintillating crystals, which are, after a recent upgrade, read out by APDs. The signals are digitized using Fastbus QDCs. In preparation of replacing the QDCs by FPGA-controlled sampling ADCs, these sampling ADCs are already used in addition in the high rate forward direction. This offers possibilities to perform on-line pile-up detection and subsequent recovery, thus allowing to reach even higher rates without a loss of data quality in the main calorimeter.

Specifically developed methods and approaches to detect and recover pile-up are presented and very promising first results are discussed.