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T: Fachverband Teilchenphysik

T 96: Trigger und DAQ 2

T 96.4: Vortrag

Mittwoch, 29. März 2017, 17:30–17:45, VSH 17

TARGET, A Digitizing and Trigger ASIC for the Cherenkov Telescope Array — David Jankowsky¹, Adrian Zink¹, Manuel Kraus¹, •Jacky Catalano¹, Manuel Loos¹, Johannes Schäfer¹, Stefan Funk¹, Luigi Tibaldo², Gary Varner³, and the CTA Consortium⁴ — ¹Erlangen Centre for Astroparticle Physics (ECAP) — ²Max-Planck-Institut für Kernphysik, Heidelberg — ³Department of Physics and Astronomy, University of Hawaii — ⁴Full consortium author list at http://cta-observatory.org

The future ground-based gamma-ray experiment Cherenkov Telescope Array (CTA) features multiple types of imaging atmospheric Cherenkov telescopes. To be affordable, camera concepts for these telescopes have to feature low cost per channel while achieving the desired scientific goals. We present the concept of the TeV Array Readout Electronics with GSa/s sampling and Event Trigger (TARGET) ASIC, envisaged to be used in the cameras of various CTA telescopes. In the newest version of this readout concept the sampling and trigger parts are split into two ASICs, TARGET C (TC) and T5TEA, both providing 16 parallel input channels. TC features a tunable sampling rate (typ. 1 GSa/s), a 16k sample deep buffer for each channel and on-demand digitization and transmission of waveforms with typical spans of ~100 ns. T5TEA provides 4 LVDS trigger outputs and can generate a pedestal voltage independently for each channel. The trigger decision is based on the analog sum of 4 adjacent channels, the associated threshold can be set by the user. We show preliminary results of the characterization and testing of TC and T5TEA.