CHECS_FEE_Performance_FINAL_170419.pdf (4.7 MB)
Performance of the Compact High Energy Camera SiPM Prototype Front-End Electronics proposed for the Cherenkov Telescope Array
journal contribution
posted on 2019-05-08, 13:42 authored by S.A. Leach, J.S. Lapington, J.O.D. Williams, C. Duffy, CTA GCT projectThe Compact High Energy Camera (CHEC) is a full-waveform capture camera, designed and proposed for the dual mirror, Schwarzschild–Couder, Small Sized Telescope of the Cherenkov Telescope Array. CHEC-S, the second prototype, is based upon silicon photomultiplier (SiPM) photodetectors optimised for single photon counting and nanosecond timing. The camera liquid-cooled focal plane plate comprises a total of 2048 SiPM pixels organised as 32 independent sensor and front-end electronics (FEE) modules providing event detection and signal digitisation of Cherenkov light flashes. Each module comprises an 8 × 8 tile of SiPM pixels, coupled to a 64-channel preamplifier-buffer followed by a FEE module based around the TARGET chipset, which combines triggering (T5TEA) and waveform capture (TARGET C) functionality.
We describe a selection of end-to-end performance tests and results conducted at the University of Leicester in the UK. Testing was performed at single module level focusing on characterising the SiPM photodetectors, optimised preamplifier-buffer and updated CHEC-S FEE readout module. Presented results include single photoelectron response, gain-matching, signal range, electronic channel crosstalk, SiPM angular dependency and optical crosstalk.
Funding
We gratefully acknowledge financial support from the agencies and organisations listed here: www.ctaobservatory.org/consortium_acknowledgments.
History
Citation
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment, 2019Author affiliation
/Organisation/COLLEGE OF SCIENCE AND ENGINEERING/Department of Physics and AstronomyVersion
- AM (Accepted Manuscript)
Published in
Nuclear Instruments and Methods in Physics Research Section A: AcceleratorsPublisher
Elsevier for North-Hollandissn
0168-9002Acceptance date
2019-04-24Copyright date
2019Publisher DOI
Publisher version
https://www.sciencedirect.com/science/article/pii/S0168900219305741?via=ihubNotes
The file associated with this record is under embargo until 12 months after publication, in accordance with the publisher's self-archiving policy. The full text may be available through the publisher links provided above.Language
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