Study of the Radiation Hardness of the ATLAS Tile Calorimeter Optical Instrumentation with Run 2 data

This paper presents a study of the radiation hardness of the hadronic Tile Calorimeter of the ATLAS experiment in the LHC Run 2. Both the plastic scintillators constituting the detector active media and the wavelength-shifting optical fibres collecting the scintillation light into the photodetector...

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Bibliographic Details
Published in:arXiv.org 2024-12
Main Authors: Abdallah, J, Agaras, M N, Ahmad, A, Bartos, P, A Berrocal Guardia, Bogavac, D, F Carrio Argos, L Cerda Alberich, Chargeishvili, B, P Conde Muiño, Cortes-Gonzalez, A, Gomes, A, Davidek, T, Djobava, T, Durglishvili, A, Epari, S, Facini, G, Faltova, J, M Fontes Medeiros, Glatzer, J, Gomez Delegido, A J, Harkusha, S, Henriques Correia, A M, Kholodenko, M, Klimek, P, Korolkov, I, Maio, A, Pedro Martins, F M, Saraiva, J G, Menke, S, Petukhova, K, Minashvili, I A, Mlynarikova, M, Mosidze, M, Mosulishvili, N, Nemecek, S, Pedro, R, Pinheiro Pereira, B C, Pleskot, V, Polacek, S, Qin, Y, Rosten, R, Santos, H, Schaefer, D, Scuri, F, Smirnov, Y, Solans Sanchez, C A, Solodkov, A A, Solovyanov, O V, Valero, A, Wilkens, H G, Zakareishvili, T
Format: Article
Language:English
Subjects:
Cesium
Damage detection
Data analysis
Impact analysis
Instruments
Large Hadron Collider
Laser damage
Optical components
Optical fibers
Photodegradation
Radiation
Radiation damage
Radiation dosage
Scintillation counters
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Summary:This paper presents a study of the radiation hardness of the hadronic Tile Calorimeter of the ATLAS experiment in the LHC Run 2. Both the plastic scintillators constituting the detector active media and the wavelength-shifting optical fibres collecting the scintillation light into the photodetector readout are elements susceptible to radiation damage. The dedicated calibration and monitoring systems of the detector (caesium radioactive sources, laser and minimum bias integrator) allow to assess the response of these optical components. Data collected with these systems between 2015 and 2018 are analysed to measure the degradation of the optical instrumentation across Run 2. Moreover, a simulation of the total ionising dose in the calorimeter is employed to study and model the degradation profile as a function of the exposure conditions, both integrated dose and dose rate. The measurement of the relative light output loss in Run 2 is presented and extrapolations to future scenarios are drawn based on current data. The impact of radiation damage on the cell response uniformity is also analysed.
ISSN:2331-8422