Development of a prototype 16-channel dual gain waveform readout and data transfer system for IACT based telescope camera

A 256-pixel camera for a 4-meter class telescope based on Imaging Atmospheric Cherenkov Technique (IACT) is under development. It would be mounted at the focal plane of TeV Atmospheric Cherenkov Telescope with Imaging Camera (TACTIC) array element at Mount Abu (Rajasthan, India). The telescope would...

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Published in:Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment Accelerators, spectrometers, detectors and associated equipment, 2023-04, Vol.1049, p.168091, Article 168091
Main Authors: Kumar, Sandeep, Upadhya, S.S., Gothe, K.S., Parmar, N.K., Ranjan, M., Rao, S.K., Nagesh, B.K., Singh, B.B., Chitnis, V., Acharya, B.S., Bhatnagar, V.
Format: Article
Language:English
Subjects:
Cherenkov
FPGA
Gamma-rays
IACT
Readout electronics
SiPM
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Summary:A 256-pixel camera for a 4-meter class telescope based on Imaging Atmospheric Cherenkov Technique (IACT) is under development. It would be mounted at the focal plane of TeV Atmospheric Cherenkov Telescope with Imaging Camera (TACTIC) array element at Mount Abu (Rajasthan, India). The telescope would be used for detection of very high energy gamma rays of celestial origin. Instead of the traditional choice of photo-multiplier tube, the camera employs silicon photo-multiplier (SiPM) as pixel sensor. The front-end electronics of the camera processes signals from 256 pixel sensors. The back-end electronics samples the processed pixel signals, generates event triggers and records the sampled signals. The critical design objectives to be met by the back-end electronics include large dynamic range of photon detection, capability of in-situ gain calibration for each pixel chain, low chance trigger rate, recording the pixel signal profile with a sampling rate of 1 Giga Samples Per Second (GSPS), low dead time (
ISSN:0168-9002
1872-9576
DOI:10.1016/j.nima.2023.168091