Radiation effects in the LHC experiments and impact on operation and performance

6/2-024 - BE Auditorium Meyrin (CERN)

6/2-024 - BE Auditorium Meyrin


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A follow up to the 1st workshop held in April 2018, with full analysis of Run 2 data, focusing on radiation effects in inner detector systems.

A substantial integrated luminosity has been delivered to the LHC experiments and the impact of the radiation on detector systems is becoming increasingly evident. The goal of this 2 day workshop at CERN is to bring together experts across the different LHC experiments and share experiences of running complex detector systems in harsh radiation environments. How well are we modelling and monitoring radiation damage? Have there been unforeseen effects, if so how was the impact mitigated? What are the operational plans for LS2 to ensure performance success for Run 3? What lessons can be learned for the LHC upgrades and future vertex and tracking detector systems? With over 150 fb-1 delivered luminosity these discussions are timely.

Participation to the workshop is open to all.
Oral presentations are by invitation.
There are no registration fees, but please register (if you'd like free coffee!)​​​​​​​

The 2 day workshop is divided into sessions on:

Session 1: Sensor Measurements (Mon 9.00-12.30)

Overview of radiation induced changes of sensor properties and the resulting degradation of LHC tracking performance. This will include measurements of sensor-, cluster-, and track-level observables that are sensitive to radiation damage effects including the leakage current, "depletion voltage", Lorentz angle, hit efficiency, charge collection efficiency, tracking efficiency, tracking resolution, etc. Discussion will include techniques and models used to scale sensor damage parameters over temperature, fluence and time. Outlook to expected future performance degradation and discussion on lessons learned from present detector operation towards the future (Run 3+) in relation to damage modelling, prediction, measurements and potentially mitigation.

Session 2: Sensor Simulation (Mon 14.00-17.30)

Review strategies and algorithms deployed by the LHC experimental collaborations to simulate fluence-dependent effects in silicon tracking detectors.  Discussion will include model integration into collaboration Monte Carlo productions, benchmark studies, validation and tuning strategies, comparisons to data, challenges (e.g. annealing), and outlook for Run 3 and the HL-LHC (time permitting).

Session 3: Radiation Background Simulation and Monitoring (Tue 9.00-12.30)

Overview of the radiation background simulations performed at the LHC experiments. Discussions on: pp collision event generation; particle transport FLUKA/G4; predicting radiation damage NIEL/TID/SEU; comparisons between the simulated predictions and the LHC Run1/Run2 detector and monitoring measurements; understanding simulation uncertainties (and safety factors) for predictions at the HL-LHC and beyond.

Session 4: Electronics/Optoelectronics (Tue 14.00-17.30)

Overview of both ionizing and non-ionizing radiation effects on tracking detector electronics.  Low and high dose-effects will be discussed.  This session will include measurements and operational experience with single event upsets, calibration drift, and tuning.  The session will also include strategies for mitigating radiation-induced effects such as lowering thresholds and re-calibrating / power-cycling.  Future outlook towards Run 3+ will be discussed.

Videoconference Rooms
Workshop on Radiation Damage to the LHC experiments
Ben Nachman
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  • Aamir Irshad
  • Agnieszka Oblakowska-Mucha
  • Aidan Grummer
  • Alessandro La Rosa
  • Alex Zeng Wang
  • Alexandre Rozanov
  • Andrei Starodumov
  • Aneliya Karadzhinova-Ferrer
  • Anna Cimmino
  • Annapaola De Cosa
  • Annie Meneses Gonzalez
  • Antonello Di Mauro
  • Arild Velure
  • Arkady Lokhovitskiy
  • Arturo Rodriguez Rodriguez
  • Attiq Ur Rehman
  • Ben Nachman
  • Benedikt Vormwald
  • Camila Pazos
  • Carl William Holmkvist
  • Chris Parkes
  • Cristina Ana Mantilla Suarez
  • D M S Sultan
  • Daniel Bjorkman
  • Dave Robinson
  • Davide Bozzato
  • Deepak Kar
  • Denis Fougeron
  • Dinko Ferencek
  • Eric Chabert
  • Erik Butz
  • Esteban Curras Rivera
  • Ettore Zaffaroni
  • Evangelia Dimovasili
  • Fares Djama
  • Federico Ravotti
  • Fengwangdong Zhang
  • Francisco Rogelio Palomo Pinto
  • Gavin Pownall
  • Gediminas Sarpis
  • Georges Blanchot
  • Gerhard Immanuel Brandt
  • Hanna Maria Borecka-Bielska
  • Heiko Christian Augustin
  • Hok Chuen Cheng
  • Ian Dawson
  • Igor Azhgirey
  • Igor Kurochkin
  • Isidre Mateu
  • Jad Zahreddine
  • Javier Llorente
  • Jean-Laurent Agram
  • Jiri Kroll
  • Joanna Wanczyk
  • Jordi Duarte Campderros
  • Jory Sonneveld
  • Kazu Akiba
  • Kazuya Mochizuki
  • Ki Lie
  • Klaas Padeken
  • Koichi Nagai
  • Lauri Olantera
  • Lorenzo Rossini
  • Luca Federici
  • Marcello Bindi
  • Marco Bomben
  • Marco Mandurrino
  • Maria Marcisovska
  • Maria Moreno Llacer
  • Maria Teresa Grippo
  • Marius Halvorsen
  • Marta Baselga
  • Martin Richard Jaekel
  • Martin Van Beuzekom
  • Matej Roguljic
  • Mathieu Benoit
  • Matteo Lupi
  • Michael Moll
  • Mika Huhtinen
  • Mohsin Hayat
  • Moritz Oliver Wiehe
  • Niklaus Lehmann
  • Panja Luukka
  • Paolo Sabatini
  • Paul Miyagawa
  • Pedro Dias De Almeida
  • Philippe Bloch
  • Raffaele Angelo Gerosa
  • Richard Teuscher
  • Rizwan Ahmad
  • Robert Froeschl
  • Rui De Oliveira Francisco
  • Sergio Gonzalez Sevilla
  • Shaun Roe
  • Sophie Mallows
  • Soren Udesen
  • Stefan Spanier
  • Stella Orfanelli
  • Sven Menke
  • Taka Kondo
  • Thanos Manousos
  • Thomas Remy Victor Billoud
  • Tommaso Lari
  • Vasilis Vlachoudis
  • Vladimir Ivantchenko
  • Vuko Brigljevic
  • Yana Gurimskaya
  • Yosuke Takubo
  • Monday, 11 February
    • 08:30 09:00
      Registration 30m
    • 09:00 09:15
      Workshop welcome and goals 15m
      Speaker: Ian Dawson (University of Sheffield (GB))
    • 09:15 12:30
      Sensor measurements
      • 09:15
        Silicon radiation damage at the LHC experiments 30m
        Speaker: Jory Sonneveld (Hamburg University (DE))
      • 09:45
        CMS pixel radiation damage measurements 20m
        Speaker: Finn Feindt (Hamburg University (DE))
      • 10:05
        Leakage current measurements with the ATLAS pixel detector 20m
        Speaker: Aidan Grummer (University of New Mexico (US))
      • 10:25
        CMS strip radiation damage measurements 20m
        Speaker: Jean-Laurent Agram (IPHC Strasbourg - Univ. de Haute-Alsace (FR))
      • 10:45
        Coffee break 25m
      • 11:10
        Sensor measurements with the ATLAS SCT 20m
        Speaker: Kazuya Mochizuki (Universite de Montreal (CA))
      • 11:30
        Radiation effects in the LHCb VELO Run 1+2 20m
        Speaker: Gediminas Sarpis (University of Manchester (GB))
      • 11:50
        Recent results of the RD50 Collaboration 20m
        Speaker: Marta Baselga (KIT - Karlsruhe Institute of Technology (DE))
      • 12:10
        Discussion 20m
    • 12:30 14:00
      Lunch break 1h 30m
    • 14:00 17:30
      Sensor simulation
      • 14:00
        Introduction 10m
      • 14:10
        Overview 35m
        Speaker: Mathieu Benoit (UNIGE)
      • 14:45
        Silicon Pixel Sensor Simulation in the CMS Monte Carlo Framework 20m
        Speaker: Cristina Ana Mantilla Suarez (Johns Hopkins University (US))
      • 15:05
        Pixel Radiation Damage Measurements with ATLAS 20m
        Speaker: Paolo Sabatini (Georg August Universitaet Goettingen (DE))
      • 15:25
        Coffee Break 25m
      • 15:50
        Lorentz angle measurements and simulations in ATLAS 20m
        Speaker: Javier Llorente Merino (Chinese Academy of Sciences (CN))
      • 16:10
        Status and Plans for ATLAS Radiation Damage Simulation 20m
        Speaker: Alex Zeng Wang (University of Wisconsin Madison (US))
      • 16:30
        Silicon Strip Sensor Simulation in the CMS Monte Carlo Framework 20m
        Speaker: Eric Chabert (Centre National de la Recherche Scientifique (FR))
      • 16:50
        Discussion 25m
  • Tuesday, 12 February