The upgraded readout system of the MAGIC telescopes

Author

Tescaro, D.

fYear

2012

fDate

Oct. 27 2012-Nov. 3 2012

Firstpage

1901

Lastpage

1904

Abstract

As a part of the 2011-2012 major upgrade, the readout system of the the MAGIC Cherenkov telescopes has been updated. New fully programmable receiver boards was designed and installed. The new boards allow very fine tuning of the level-O digital trigger signals, in terms of discrimination threshold, trigger width and relative trigger delay. New sampling electronics was also installed. The core of the new digitization system is the DRS4 waveform digitizer, a switched capacitor array which allow ultra-fast sampling with a limited cost and power consumption. The new readout system shows very satisfactory results in terms of performance (noise, linearity, time resolution, etc.) and reliability. Clever online raw data pre-processing routines are applied at DAQ level. The ultra-fast sampling speed (2 GSample/s) allows a signal integration window of 3 ns only.

Keywords

Cherenkov counters; analogue-digital conversion; nuclear electronics; readout electronics; reliability; signal processing; trigger circuits; DAQ level; DRS4 waveform digitizer; MAGIC Cherenkov telescopes; bit rate 2 Gbit/s; digitization system; discrimination threshold; fully programmable receiver boards; level-0 digital trigger signals; online raw data preprocessing routines; power consumption; relative trigger delay; reliability; sampling electronics; signal integration window; switched capacitor array; time resolution; trigger width; ultra-fast sampling speed; upgraded readout system;

fLanguage

English

Publisher

ieee

Conference_Titel

Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2012 IEEE

Conference_Location

Anaheim, CA

ISSN

1082-3654

Print_ISBN

978-1-4673-2028-3

Type

conf

DOI

10.1109/NSSMIC.2012.6551440

Filename

6551440