Peer-reviewedCC BYJournal of Instrumentation
Measurements of sensor radiation damage in the ATLAS inner detector using leakage currents
Abstract
Non-ionizing energy loss causes bulk damage to the silicon sensors of the ATLAS pixel and strip detectors. This damage has important implications for data-taking operations, charged-particle track reconstruction, detector simulations, and physics analysis. This paper presents simulations and measurements of the leakage current in the ATLAS pixel detector and semiconductor tracker as a function of location in the detector and time, using data collected in Run 1 (2010–2012) and Run 2 (2015–2018) of the Large Hadron Collider. The extracted fluence shows a much stronger |z|-dependence in the innermost layers than is seen in simulation. Furthermore, the overall fluence on the second innermost layer is significantly higher than in simulation, with better agreement in layers at higher radii. These measurements are important for validating the simulation models and can be used in part to justify safety factors for future detector designs and interventions.
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BibTeX
@article{aad2026measurements,
title = {{Measurements of sensor radiation damage in the ATLAS inner detector using leakage currents}},
author = {Georges Aad and Braden Keim Abbott and Dale Abbott and Adam Abed Abud and Kira Abeling and Deshan Kavishka Abhayasinghe and Haider Abidi and Hass Abouzeid and Nicola Louise Abraham and Halina Abramowicz and Henso Abreu and Yiming Abulaiti and Angel Abusleme and Bobby Samir Acharya and Baida Achkar and Lennart Adam and Claire Adam Bourdarios and Leszek Adamczyk and Lukas Adamek and Jahred Adelman and Aytul Adiguzel and Sofia Adorni Braccesi Chiassi and Tim Adye and Tony Affolder and Yoav Afik and Christina Agapopoulou and Merve Nazlim Agaras and Anamika Aggarwal and Catalin Agheorghiesei and Juan Antonio Aguilar Saavedra and Ammara Ahmad and Faig Ahmadov and Waleed Syed Ahmed and Xiaocong Ai and Giulio Aielli and Shunichi Akatsuka and Melike Akbiyik and Torsten Akesson and Ece Akilli and Andrei Akimov and Konie Al Khoury and Gian Luigi Alberghi and Justin Albert and Josefina Alconada and Sara Alderweireldt and Martin Aleksa and Igor Alexandrov and Calin Alexa and Theodoros Alexopoulos and Alice Alfonsi and Fabrizio Alfonsi and Muhammad Alhroob and Babar Ali and Shahzad Ali and Malik Aliev and Gianluca Alimonti and Corentin Allaire and Benedict Allbrooke and Philip Patrick Allport and Alberto Aloisio},
journal = {Journal of Instrumentation},
year = {2026},
month = sep,
doi = {10.1088/1748-0221/16/08/p08025},
eprint = {2106.09287},
archivePrefix = {arXiv},
url = {https://hal.science/hal-03274185v1},
note = {CC BY},
}
RIS
TY - JOUR
TI - Measurements of sensor radiation damage in the ATLAS inner detector using leakage currents
AU - Georges Aad
AU - Braden Keim Abbott
AU - Dale Abbott
AU - Adam Abed Abud
AU - Kira Abeling
AU - Deshan Kavishka Abhayasinghe
AU - Haider Abidi
AU - Hass Abouzeid
AU - Nicola Louise Abraham
AU - Halina Abramowicz
AU - Henso Abreu
AU - Yiming Abulaiti
AU - Angel Abusleme
AU - Bobby Samir Acharya
AU - Baida Achkar
AU - Lennart Adam
AU - Claire Adam Bourdarios
AU - Leszek Adamczyk
AU - Lukas Adamek
AU - Jahred Adelman
AU - Aytul Adiguzel
AU - Sofia Adorni Braccesi Chiassi
AU - Tim Adye
AU - Tony Affolder
AU - Yoav Afik
AU - Christina Agapopoulou
AU - Merve Nazlim Agaras
AU - Anamika Aggarwal
AU - Catalin Agheorghiesei
AU - Juan Antonio Aguilar Saavedra
AU - Ammara Ahmad
AU - Faig Ahmadov
AU - Waleed Syed Ahmed
AU - Xiaocong Ai
AU - Giulio Aielli
AU - Shunichi Akatsuka
AU - Melike Akbiyik
AU - Torsten Akesson
AU - Ece Akilli
AU - Andrei Akimov
AU - Konie Al Khoury
AU - Gian Luigi Alberghi
AU - Justin Albert
AU - Josefina Alconada
AU - Sara Alderweireldt
AU - Martin Aleksa
AU - Igor Alexandrov
AU - Calin Alexa
AU - Theodoros Alexopoulos
AU - Alice Alfonsi
AU - Fabrizio Alfonsi
AU - Muhammad Alhroob
AU - Babar Ali
AU - Shahzad Ali
AU - Malik Aliev
AU - Gianluca Alimonti
AU - Corentin Allaire
AU - Benedict Allbrooke
AU - Philip Patrick Allport
AU - Alberto Aloisio
PY - 2026
DA - 2026/09/23
JO - Journal of Instrumentation
DO - 10.1088/1748-0221/16/08/p08025
UR - https://hal.science/hal-03274185v1
AB - Non-ionizing energy loss causes bulk damage to the silicon sensors of the ATLAS pixel and strip detectors. This damage has important implications for data-taking operations, charged-particle track reconstruction, detector simulations, and physics analysis. This paper presents simulations and measurements of the leakage current in the ATLAS pixel detector and semiconductor tracker as a function of location in the detector and time, using data collected in Run 1 (2010–2012) and Run 2 (2015–2018) of the Large Hadron Collider. The extracted fluence shows a much stronger |z|-dependence in the innermost layers than is seen in simulation. Furthermore, the overall fluence on the second innermost layer is significantly higher than in simulation, with better agreement in layers at higher radii. These measurements are important for validating the simulation models and can be used in part to justify safety factors for future detector designs and interventions.
SN - 1748-0221
ER -