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SUMMARY:High Granularity Timing Detector: it's time for high lumi
DTSTART:20260304T120000Z
DTEND:20260304T130000Z
DTSTAMP:20260421T104400Z
UID:indico-event-2463@indico.ifae.es
DESCRIPTION:Speakers: Pau Fusté Martín\n\nThe High-Luminosity phase of t
 he LHC (HL-LHC) will bring an increase in the instantaneous luminosity of 
 the present accelerator by a factor of 7.5\, leading up to 200 interaction
 s per bunch crossing. This extreme pile-up environment will be a challenge
  for the track reconstruction performance of ATLAS\, particularly in the f
 orward region. To address this\, the High-Granularity Timing Detector (HGT
 D) will be installed between the new Inner Tracker (ITk) and the calorimet
 ers\, covering a pseudorapidity range of 2.4 < |η| < 4.0. It will provide
  precise timing measurements\, with a resolution of 30 ps per track at the
  beginning of operation and up to 50 ps at the maximum HL-LHC fluence. Thi
 s allows HGTD to recover the tracking performance in the forward region wh
 en combined with the ITk spatial resolution.\nHGTD consists of 8032 module
 s\, each composed of two hybrids\, and a total of about 3.6M channels. A h
 ybrid integrates a Low-Gain Avalanche Detector (LGAD) sensor bump-bonded t
 o a dedicated front-end ASIC\, called the ALTIROC. The readout cells have 
 a size of 1.3 mm x 1.3 mm.\nThis talk will present recent performance stud
 ies of ALTIROC-A modules\, the final version of the ASIC\, ahead of the (p
 re-)production phase. The testbench characterization procedure will be des
 cribed\, including threshold tuning and connectivity tests. Results from t
 estbeam campaigns will also be shown\, highlighting the measurements of th
 e hit efficiency and the timing performance of the modules.\n\nhttps://ind
 ico.ifae.es/event/2463/
LOCATION:IFAE Seminar Room (In-person)
URL:https://indico.ifae.es/event/2463/
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