Heidelberg 2015 – scientific programme

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HK: Fachverband Physik der Hadronen und Kerne

HK 51: Instrumentation 16

HK 51.3: Talk

Thursday, March 26, 2015, 15:15–15:30, M/HS2

A new digital pulse generator for the CALIFA detector — Michael Bendel, Roman Gernhaeuser, Benjamin Heiss, Philipp Klenze, •Patrick Remmels, and Max Winkel for the R3B collaboration — Physik Department E12, Technische Universität München

The 4π-calorimeter CALIFA ist one of the major detectors of the R3B-experiment at the upcoming Facility for Antiproton and Ion Research in Darmstadt. The monitoring of stability, single channel properties, temperature effects and rate dependency in a high resolution, high granularity calorimeter is essential for the success of the whole experiment. A new digital pulse generator will emulate the complex signal of the CsI(Tl) crystals in order to fine tune the online pulse shape analysis for particle identification, background suppression, energy calibration and for deadtime and pileup studies. The total pulse generator firmware is implemented into the digital readout platform FEBEX used in CALIFA. The FPGA and a small analog add on board allow for highly flexible parameter adjustment. New applications are easy to implement and even very complex shapes are produced by simple lookup tables. The concept, features and implementation of a prototype and a first application in the CALIFA Demonstrator Experiment in October 2014 at GSI in Darmstadt will be presented.
Supported by BMBF under contract 05P12WOFNF, and by GSI Darmstadt.