PoS - Proceedings of Science
Volume 370 - Topical Workshop on Electronics for Particle Physics (TWEPP2019) - Asic
ALTIROC1, a 25 pico-second time resolution ASIC for the ATLAS High Granularity Timing Detector (HGTD)
N. Seguin-Moreau,* S. Conforti, P. Dinaucourt, C. de La Taille, G. Martin-Chassard, C. Agapopoulou, N. Makovec, L. Serin, S. Sacerdoti, A. Dragone, B. Markovic, C. Milke, L. Ruckman, A. Schwartzman, D. Su, D. Gong, J. Ye, W. Zhou
*corresponding author
Full text: pdf
Pre-published on: March 13, 2020
Published on: April 21, 2020
ALTIROC1 is a 25-channel ASIC designed to read out the 5 x 5 matrix of 1.3 mm x 1.3 mm x 50 μm low Gain Avalanche Diodes (LGAD) of the ATLAS HGTD detector foreseen for the HL-LHC upgrade. The targeted combined time resolution of the sensor and the readout electronics is from 40 ps/hit (initial) to about 80 ps/hit (end of operational lifetime). Each ASIC channel integrates a RF preamplifier followed by a high speed discriminator and two TDCs for Time-of- Arrival and Time-Over-Threshold measurements as well as a local memory. This front-end must exhibit an extremely low jitter noise while keeping a challenging power consumption of less than 4.5 mW. Detailed measurements are presented.
DOI: https://doi.org/10.22323/1.370.0042
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