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HK: Fachverband Physik der Hadronen und Kerne

HK 63: Instrumentation XIV

HK 63.1: Vortrag

Freitag, 31. März 2017, 14:00–14:15, F 072

A phoswich detector readout with GHz sampling using the FEBEX platform — Roman Gernhäuser, Benjamin Heiss, Philipp Klenze, Patrick Remmels, •Felix Stark, and Max Winkel — Technische Universität München

The most forward part of the CALIFA Calorimeter consists of very fast LaBr3/LaCl3 scintillation crystals in a Phoswich configuration. To separate both components of the scintillation light with a spectroscopic resolution, the signals have to be sampled with rates of about 1 GSPS and 14 bits resolution at least. A new frontend electronics based on the DRS4 chip will provide buffered analogue signals. A direct connection to the CALIFA data acquisition platform FEBEX will allow for a homogeneous integration into the existing R3B-DAQ. Using two different ADC channels for each detector unit provides a straight forward use of the DRS4 in a free running self triggered system. We will present the readout concept, its implementation and a series of detailed tests of a first prototype which has been recently developed. Supported by BMBF Project 05P15WOFNA.