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arXiv · 1611.09713

Reconfigurable ASIC for a Low Level Trigger System in Cherenkov Telescope Cameras

David Gascon·Juan Abel Barrio·Oscar Blanch·Joan Boix·Eric Delagnes·Carlos Delgado·Lluís Freixas·Fabrice Guilloux·Rubén López-Coto·Scott Griffiths·Gustavo Martínez·Oscar Martínez·Andreu Sanuy·Luis Ángel Tejedor
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Abstract

A versatile and reconfigurable ASIC is presented, which implements two different concepts of low level trigger (L0) for Cherenkov telescopes: the Majority trigger (sum of discriminated inputs) and the Sum trigger concept (analogue clipped sum of inputs). Up to 7 input signals can be processed following one or both of the previous trigger concepts. Each differential pair output of the discriminator is also available as a LVDS output. Differential circuitry using local feedback allows the ASIC to achieve high speed (500 MHz) while maintaining good linearity in a 1 Vpp range. Experimental results are presented. A number of prototype camera designs of the Cherenkov Telescope Array (CTA) project will use this ASIC.

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David Gascon, Juan Abel Barrio, Oscar Blanch, Joan Boix, Eric Delagnes, Carlos Delgado, Lluís Freixas, Fabrice Guilloux, Rubén López-Coto, Scott Griffiths, Gustavo Martínez, Oscar Martínez, Andreu Sanuy, Luis Ángel Tejedor. 2016-11-29. Reconfigurable ASIC for a Low Level Trigger System in Cherenkov Telescope Cameras. https://doi.org/10.1088/1748-0221%2F11%2F11%2Fp11017

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