Papers and notes

2024

• C. Obermair, “Interpretable Fault Prediction for CERN Energy Frontier Colliders,”, Ph.D. Thesis, p. 151, 2023, Available: https://cds.cern.ch/record/2887262.

2023

• C. Obermair, A. Apollonio, Z. Charifoulline, L. Felsberger, M. Janitschke, F. Pernkopf, E. Ravaioli, D. Wollmann, M. Wozniak, “Interpretable Anomaly Detection in the LHC Main Dipole Circuits with Non-negative Matrix Factorization,” submitted to IEEE Transactions on Applied Superconductivity, 2023

• C. Wiesner et al., "Study of hydrodynamic-tunnelling effects induced by high-energy proton beams in graphite," J. Phys. Conf. Ser., vol. 2420, no. 1, p. 12004, 2023, Available: https://iopscience.iop.org/article/10.1088/1742-6596/2420/1/012004

• L. Richtmann, L. Bortot, E. Ravaioli, C. Wiesner, and D. Wollmann, "Beam-based reconstruction of the shielded quench-heater fields for the LHC main dipoles," J. Phys. Conf. Ser., vol. 2420, no. 1, p. 12005, 2023, Available: https://iopscience.iop.org/article/10.1088/1742-6596/2420/1/012005

• M.-A. Galilée†, M. Christensen, G. M. Garcia, J. C. Garnier, M. M. Moya, T. Podzorny, L. R. Ropero, and E. Thaller, "Data acquisition and supervision for the HL-LHC quench protection system – Part II the software stack" in Proc. IPAC'23, Available: https://inspirehep.net/files/b40aa406c1e7de7eda4f0db9d0d8b95a

2022

• A. Apollonio et al., “Summary of the Post-Long Shutdown 2 LHC Hardware Commissioning Campaign,” in Proc. IPAC’22, 2022, no. 13, pp. 335–338, Available: https://inspirehep.net/files/5e04e56ade298590474aa325eb8b42ae

• A. Lechner, P. Bélanger, I. Efthymiopoulos, L. Grob, B. Lindstrom, R. Schmidt, and D. Wollmann, "Dust-induced beam losses in the cryogenic arcs of the CERN Large Hadron Collider", Phys. Rev. Accel. Beams, 2022, Available: https://journals.aps.org/prab/abstract/10.1103/PhysRevAccelBeams.25.041001

• C. Hernalsteens, C. Lannoy, O. K. Tuormaa, M. V. Basco, C. Wiesner, and D. Wollmann, “The Effect of a Partially Depleted Halo on the Criticality and Detectability of Fast Failures in the HL-LHC,” in Proc. IPAC’22, Jan. 2022, no. 13, pp. 1866–1869, Available: https://cds.cern.ch/record/2839950/files/document.pdf

• C. Hernalsteens et al., “Effect of a Spurious CLIQ Firing on the Circulating Beam in HL-LHC,” in Proc. IPAC’22, 2022, no. 13, pp. 1862–1865, Available: https://inspirehep.net/files/e9df93baabb19c1188aa3163545392e8

• C. Obermair, T. Cartier-Michaud, A. Apollonio, W. Millar, L. Felsberger, L. Fischl, H. S. Bovbjerg, D. Wollmann, W. Wuensch, N. Catalan-Lasheras, M. Boronat, F. Pernkopf, G. Burt, “Explainable Machine Learning for Breakdown Prediction in High Gradient RF Cavities” Phys. Rev. Accel. Beams, 25(10), 104601. 2022, Available: https://link.aps.org/doi/10.1103/PhysRevAccelBeams.25.104601

• F. Hulphers, "Deep learning for anomaly detection in high-energy beam dump data from the Large Hadron Collider", Master's thesis 2022, Available: http://cds.cern.ch/record/2834608

• H.S. Bovbjerg, C. Obermair, A. Apollonio, T. Cartier-Michaud, W. Millar, Z.H. Tan , M. Shen, D. Wollmann, “Data Augmentation for Breakdown Prediction in CLIC RF Cavities” in Proc. IPAC'22, Available: https://accelconf.web.cern.ch/ipac2022/papers/tupoms054.pdf

• J. Barth, F. Bogyai, J.C. Garnier, M. Majewski, T. Ribeiro, A. Mnich, M. Pocwierz, R. Selvek, R. Simpson, A. Stanisz, D. Wollmann, M. Zerlauth, "A Modernized Architecture for the Post Mortem System at CERN", Proc. IPAC’22, 2022, 1557-1560, Available: https://jacow.org/ipac2022/papers/tupoms055.pdf

• J. Don and C. Wiesner, “Simulation of hydrodynamic-tunnelling effects induced by 7 TeV protons in graphite,” in MPE Technical Note 2022-01, EDMS Nr. 2739903, 2022, Available: https://edms.cern.ch/document/2739903.

• L. Fischl, "Data Analysis of the XBox-2 Radiofrequency Cavity at CERN using Machine Learning Techniques", Master's thesis 2022, Available: http://cds.cern.ch/record/2809339

• M. Blaszkiewicz, "Methods to optimize rare-event Monte Carlo reliability simulations for Large Hadron Collider Protection Systems," Master's thesis 2022, Available: https://cds.cern.ch/record/2808520/files/CERN-THESIS-2022-037.pdf

• M. Blaszkiewicz, A. Apollonio, T. Cartier-Michaud, B. Panev, M. Pojer, and D. Wollmann, "Reliability Analysis of the HL-LHC Energy Extraction System," in Proc. IPAC’22, 2022, Available: https://inspirehep.net/files/853755ceac80ab38eb787ef782659eec

• P. Bélanger, R. Baartman, A. Lechner, B. Lindstrom, R. Schmidt, and D. Wollmann, "Charging mechanisms and orbital dynamics of charged dust grains in the LHC," Phys. Rev. Accel. Beams, vol. 25, no. 10, p. 101001, 2022, Available: https://journals.aps.org/prab/abstract/10.1103/PhysRevAccelBeams.25.101001.

2021

• A. Will, “Damage mechanisms in superconductors due to the impact of high energy proton beams and radiation tolerance of cryogenic diodes used in particle accelerator magnet systems.” 2021,  Available: https://publikationen.bibliothek.kit.edu/1000134497.

• B. H. F. Lindstrom, “Criticality of fast failures in the High Luminosity Large Hadron Collider,” CERN, 2021, Available: https://cds.cern.ch/record/2762088/files/CERN-THESIS-2020-318.pdf.

• C. Obermair, M. Maciejewski, F. Pernkopf, Z. Charifoulline, A. Apollonio, and A. Verweij, “Machine Learning with a Hybrid Model for Monitoring of the Protection Systems of the LHC,” 2021, Available: https://accelconf.web.cern.ch/ipac2021/papers/mopab345.pdf.

• C. Obermair et al., “Machine Learning Models for Breakdown Prediction in RF Cavities for Accelerators,” in Proc. IPAC’21, 2021, no. 12, pp. 1068–1071, Available: https://jacow.org/ipac2021/papers/mopab344.pdf.

• J. Kruse-Hansen and C. Wiesner, “Automatic Density Assignment and Generation of FLUKA Input Files for Hydrodynamic-Tunnelling Studies,” Geneva, Switzerland, 2021.  Available: https://edms.cern.ch/ui/file/2579002/1/Kruse-Hansen_Wiesner_Coupling_Script_Vers1_0.pdf.

• L. Richtmann, "Effect of Quench Heater Discharges on the Circulating Beam in the Large Hadron Collider", Master's thesis (Sep. 2021), Leibniz Universität Hannover, https://cds.cern.ch/record/2790993

2020

• A. Will et al., “Characterization of the radiation tolerance of cryogenic diodes for the High Luminosity LHC inner triplet circuit,” Phys. Rev. Accel. Beams, vol. 23, no. 5, p. 53502, May 2020, Available: https://link.aps.org/doi/10.1103/PhysRevAccelBeams.23.053502.

• B. Lindstrom et al., “Dynamics of the interaction of dust particles with the LHC beam,” Phys. Rev. Accel. Beams, vol. 23, no. 124501, 2020, Accessed: Jun. 02, 2021. Available: https://journals.aps.org/prab/abstract/10.1103/PhysRevAccelBeams.23.124501.

• B. Lindstrom et al., “Fast failures in the LHC and the future high luminosity LHC,” Phys. Rev. Accel. Beams, vol. 23, no. 8, p. 81001, Aug. 2020, Available: https://link.aps.org/doi/10.1103/PhysRevAccelBeams.23.081001.

• J. Schubert, “Damage Study on Single Strand Nb3Sn Ultra-Fast Beam Impact in Cryogenic Environment Simulation with Finite Element Method.” 2020, Available: http://cds.cern.ch/record/2724326.

• O. Aberle et al., "High-Luminosity Large Hadron Collider (HL-LHC): Technical design report", Geneva: CERN, 2020, Available: https://cds.cern.ch/record/2749422?ln=de

• P. Bélanger, “Unidentified falling objects in the Large Hadron Collider: formation, charging mechanisms and dynamics of dust particulates in a high energy proton accelerator,” University of British Columbia, 2020, Available: https://cds.cern.ch/record/2744948.

2019

• B. Lindstrom et al., “Machine Protection Experience from Beam Tests with Crab Cavity Prototypes in the CERN SPS,” J. Phys. Conf. Ser., vol. 1350, p. 12004, Nov. 2019, Available: https://doi.org/10.1088/1742-6596/1350/1/012004.

2018

• A. Oslandsbotn, A. Will, and D. Wollmann, “Beam Impact on Superconductor short samples of Nb3 Sn, Nb-Ti and YBCO,” Geneva, Dec. 2018. Available: https://edms.cern.ch/document/2068064/1.

• M. Valette et al., “Impact of Superconducting Magnet Protection Equipment on the Circulating Beam in HL-LHC,” Proc. 9^th Int. Part. Accel. Conf., vol. IPAC2018, 2018,  Available: https://cds.cern.ch/record/2672237/files/thpaf062.pdf.

• R. Calaga, O. Capatina, and G. Vandoni, “The SPS Tests of the HL-LHC Crab Cavities,” in Proc. 9^th Int. Particle Accelerator Conf. (IPAC’18), 2018, pp. 846–849,  Available: https://cds.cern.ch/record/2649807/files/tupaf057.pdf.

2015

• C. Aguilera et al., "First Operational Experience of DSL Based Analysis Modules for LHC Hardware Commissioning", Proc. 6^th Int. Part. Accel. Conf., IPAC2015, 2015 Available: https://accelconf.web.cern.ch/IPAC2015/papers/mopty059.pdf

• C. Aguilera et al., "Smooth Migration of CERN Post Mortem Service to a Horizontally Scalable Service", Proc. 15^th ICALEPCS, 2015, Available: https://accelconf.web.cern.ch/ICALEPCS2015/papers/wepgf047.pdf

2013

• D. Anderson et al., "The AccTesting Framework: An Extensible Framework for Accelerator Commissioning and Systematic Testing", Proc. 14^th ICALEPCS, 2013, Available: http://accelconf.web.cern.ch/AccelConf/ICALEPCS2013/papers/thppc078.pdf

• D. Anderson et al., "Using a Java Embedded DSL for LHC Test Analysis", Proc. 14^th ICALEPCS, 2013, Available: http://accelconf.web.cern.ch/AccelConf/ICALEPCS2013/papers/thppc079.pdf

• K. Fuchsberger, J. Garnier, A. Gorzawski, E. Motesnitsalis, "Concept and Prototype for a Distributed Analysis Framework for the LHC Machine Data", Proc. 14^th ICALEPCS, 2013, Available: http://accelconf.web.cern.ch/AccelConf/ICALEPCS2013/papers/tuppc026.pdf

• M. Audrain et al., "System Relation Management and Status Tracking for CERN Accelerator Systems", Proc. 14^th ICALEPCS, 2013, Available: http://accelconf.web.cern.ch/AccelConf/ICALEPCS2013/papers/tuppc030.pdf

2012

• V. Baggiolini et al., "Automated Execution and Tracking of the LHC Commissioning Tests", Proc. 3^rd Int. Part. Accel. Conf., IPAC2012, 2012, Available: https://cds.cern.ch/record/1470342/files/CERN-ATS-2012-205.pdf