학술논문
ALTIROC1, a 20 ps time-resolution ASIC prototype for the ATLAS High Granularity Timing Detector (HGTD)
Document Type
Conference
Author
Source
2018 IEEE Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC) Nuclear Science Symposium and Medical Imaging Conference Proceedings (NSS/MIC), 2018 IEEE. :1-3 Nov, 2018
Subject
Language
ISSN
2577-0829
Abstract
THE high-luminosity phase of CERN’s Large Hadron Collider (HL-LHC) is foreseen to start in 2026 [1] . The expected increase of the pile-up due to the 200 interactions per bunch crossing will have a severe impact on the physics. A High Granularity Timing Detector (HGTD) is proposed in front of the Liquid Argon End-Cap calorimeters for pile-up mitigation at Level-0 trigger level and in the offline reconstruction. Four layers of very thin (50 µm) Low Gain Avalanche Diodes (LGAD), with a transverse size of 1.3 x 1.3 mm 2 , are foreseen to provide precise timing information for charged and neutral particles with a time resolution of about 30 pico-seconds per MIP.