2021/04/19 by M. N. Agaras, Agaras, Merve Nazlim
Physics and Astronomy · #FOS: Physical sciences #High Energy Physics - Experiment (hep-ex) #Instrumentation and Detectors (physics.ins-det) #Particle Detector Development and Performance #Particle physics theoretical and experimental studies #Radiation Detection and Scintillator Technologies
paper · pdf · doi:10.48550/arxiv.2105.09099
openalex publication_date 2021/04/19 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/28
The Tile Calorimeter (TileCal) is a sampling hadronic calorimeter covering\nthe central region of the ATLAS experiment. TileCal uses steel as absorber and\nplastic scintillators as active medium. The scintillators are read-out by the\nwavelength shifting fibres coupled to the photomultiplier tubes (PMTs). The\nanalogue signals from the PMTs are amplified, shaped, digitized by sampling the\nsignal every 25 ns and stored on detector until a trigger decision is received.\nThe TileCal front-end electronics reads out the signals produced by about 10000\nchannels measuring energies ranging from about 30 MeV to about 2 TeV. Each\nstage of the signal production from scintillation light to the signal\nreconstruction is monitored and calibrated to better than 1 % using radioactive\nsource, laser and charge injection systems. The performance of the calorimeter\nhas been measured and monitored using calibration data, cosmic ray muons and\nthe large sample of proton-proton collisions acquired in 2009-2018 during LHC\nRun I and Run II. The High-Luminosity phase of LHC, delivering five times the\nLHC nominal instantaneous luminosity, is expected to begin in 2028. TileCal\nwill require new electronics to meet the requirements of a higher trigger rate,\nhigher ambient radiation, and to ensure better performance under high pile-up\nconditions. Both the on- and off-detector TileCal electronics will be replaced\nduring the shutdown of 2025-2027. New electronics prototypes were tested in\nlaboratories as well as in beam tests. Results of the calorimeter calibration\nand performance during LHC Run II are summarized, the main features and beam\ntest results obtained with the new front-end electronics are also presented.\n