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ALTIROC1, a 25 ps Time Resolution ASIC for the ATLAS High Granularity Timing Detector

  • C. Agapopoulou
  • , P. Dinaucourt
  • , A. Dragone
  • , D. Gong
  • , C. de la Taille
  • , N. Makovec
  • , B. Markovic
  • , G. Martin-Chassard
  • , C. Milke
  • , M. Morenas
  • , L. Ruckman
  • , S. Sacerdoti
  • , A. Schwartzman
  • , N. Seguin-Moreau
  • , L. Serin
  • , D. Su
  • , J. Ye
  • Université Paris-Sud
  • CNRSIN2P3-Ecole Polytechnique
  • Stanford Linear Accelerator Center
  • Southern Methodist University

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

7 Citations (Scopus)

Abstract

1 Abstract-Designed and characterized by the HGTD collaboration, ALTIROC belongs to the family of readout ASICs used at the Large Hadron Collider (LHC) for the High Luminosity-LHC upgrade. ALTIROC1 is a 25-channel ASIC designed in CMOS 130 nm to read out the 5 x 5 matrix of 1.3 mm x 1.3 mm Low Gain Avalanche Diodes (LGAD) of the ATLAS HGTD detector. The targeted combined time resolution of the sensor and its readout electronics from 35 ps/hit (initial) to 70 ps/hit (end of operational lifetime). Each ASIC channel integrates an 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 per channel. This conference proceeding summarizes the ASIC's architecture, its measured performances compared to simulation, along with the requirements for the HEP experiments.

Original languageEnglish
Title of host publication2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728176932
DOIs
Publication statusPublished - 1 Jan 2020
Externally publishedYes
Event2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020 - Virtual, Online, United States
Duration: 31 Oct 20207 Nov 2020

Publication series

Name2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020

Conference

Conference2020 IEEE Nuclear Science Symposium and Medical Imaging Conference, NSS/MIC 2020
Country/TerritoryUnited States
CityVirtual, Online
Period31/10/207/11/20

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