A Cherenkov camera with integrated electronics based on the “Smart Pixel” concept

Bulian, Norbert; Hirsch, Thomas; Hofmann, Werner; Kihm, Thomas; Kohnle, Antje; Panter, Michael; Stein, Michael
June 2000
AIP Conference Proceedings;2000, Vol. 515 Issue 1, p378
Academic Journal
An option for the cameras of the HESS telescopes, the concept of a modular camera based on “Smart Pixels” was developed. A Smart Pixel contains the photomultiplier, the high voltage supply for the photomultiplier, a dual-gain sample-and-hold circuit with a 14 bit dynamic range, a time-to-voltage converter, a trigger discriminator, trigger logic to detect a coincidence of X=1...7 neighboring pixels, and an analog ratemeter. The Smart Pixels plug into a common backplane which provides power, communicates trigger signals between neighboring pixels, and holds a digital control bus as well as an analog bus for multiplexed readout of pixel signals. The performance of the Smart Pixels has been studied using a 19-pixel test camera. © 2000 American Institute of Physics.


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