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Papers and notes

2024

  • G. Arduini, V. Baglin, H. Bartosik, L. Bottura, C. Bracco, B. Bradu, G. Bregliozzi, K. Brodzinski, R. Bruce, M. Calviani, P. Chiggiato, P. Cruikshank, S. Claudet, D. Delikaris, S. Fartoukh, C. Garion, M. Himmerlich, M. Hostettler, G. Iadarola, S. Kostoglou, S. Le Naour, A. Lechner, T. Lefevre, L. Mether, Y. Papaphilippou, V. Petit, M. Pojer, A. Poyet, S. Redaelli, F. Rodriguez Mateos, G. Rumolo, B. Salvant, F. Sanchez Galan, A. Siemko, M. Solfaroli-Camillocci, G. Sterbini, M. Taborelli, L. Tavian, H. Timko, J.-Ph. Tock, A. Verweij, M. Wendt, J. Wenninger, D. Wollmann, and Ch. Yin Vallgren. Lhc upgrades in preparation of run 3. Journal of Instrumentation, 1905:P05061, may 2024. URL: https://dx.doi.org/10.1088/1748-0221/19/05/P05061, doi:10.1088/1748-0221/19/05/P05061.

2023

  • Christoph Obermair. Interpretable Fault Prediction for CERN Energy Frontier Colliders. PhD thesis, Graz, Tech. U., 2023. URL: https://cds.cern.ch/record/2887262.

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

  • A Lechner, P Bélanger, B Lindstrom, R Schmidt, and D Wollmann. Characteristics of dust- induced beam losses in the cryogenic arc sectors of the CERN Large Hadron Collider. to be submitted to PRAB, 2023.

2022

  • J.F. Barth, F. Bogyai, J.C. Garnier, M.L. Majewski, T. Martins Ribeiro, A. Mnich, M.P. Pocwierz, R.S. Selvek, R. Simpson, A. Stanisz, D. Wollmann, and M. Zerlauth. A Modernized Architecture for the Post Mortem System at CERN. In Proc. IPAC'22, number 13 in International Particle Accelerator Conference, 1557–1560. JACoW Publishing, Geneva, Switzerland, 07 2022. URL: https://jacow.org/ipac2022/papers/tupoms055.pdf, doi:10.18429/JACoW-IPAC2022-TUPOMS055.

2021

  • 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. In Proc. IPAC'21. 2021. URL: https://accelconf.web.cern.ch/ipac2021/papers/mopab345.pdf.

  • C Obermair, A Apollonio, T Cartier-Michaud, N Catalán Lasheras, L Felsberger, W L Millar, F Pernkopf, and W Wuensch. Machine Learning Models for Breakdown Prediction in RF Cavities for Accelerators. In Proc. IPAC'21, number 12 in International Particle Accelerator Conference, 1068–1071. JACoW Publishing, Geneva, Switzerland, 2021. URL: https://jacow.org/ipac2021/papers/mopab344.pdf.

  • Emmanuele Ravaioli and Christoph Wiesner. Calculation of magnetic transients due to quench-heater discharges and eddy currents in cylindrical beam screens. Technical Report, CERN, Geneva, Switzerland, jan 2021. URL: https://edms.cern.ch/document/2470088.

  • Jens Kruse-Hansen and Christoph Wiesner. Automatic Density Assignment and Generation of FLUKA Input Files for Hydrodynamic-Tunnelling Studies. Technical Report, CERN, Geneva, Switzerland, 2021. URL: https://edms.cern.ch/document/2579002.

  • Andreas 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. URL: https://publikationen.bibliothek.kit.edu/1000134497.

  • Bjorn Hans Filip Lindstrom. Criticality of fast failures in the High Luminosity Large Hadron Collider. PhD thesis, CERN, 2021. URL: https://cds.cern.ch/record/2762088/files/CERN-THESIS-2020-318.pdf.

  • 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, 2021.

2018

  • Andreas Oslandsbotn, Andreas Will, and Daniel Wollmann. Beam Impact on Superconductor short samples of Nb3 Sn, Nb-Ti and YBCO. Technical Report, CERN, TE-MPE, Geneva, dec 2018. URL: https://edms.cern.ch/document/2068064/1.

  • Matthieu Valette, Lorenzo Bortot, Alejandro Fernandez Navarro, Bjorn Lindstrom, Matthijs Mentink, Emmanuele Ravaioli, Ruediger Schmidt, Edvard Stubberud, Arjan Verweij, and Daniel Wollmann. Impact of Superconducting Magnet Protection Equipment on the Circulating Beam in HL-LHC. Proceedings of the 9th Int. Particle Accelerator Conf., 2018. URL: 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. 9th Int. Particle Accelerator Conf. IPAC'18, 846–849. JACoW Publishing, 2018. URL: https://cds.cern.ch/record/2649807/files/tupaf057.pdf.

2020

  • Andreas Will, G D'Angelo, R Denz, D Hagedorn, A Monteuuis, E Ravaioli, F Rodriguez Mateos, A Siemko, K Stachon, A Verweij, D Wollmann, A.-S. Mueller, and A Bernhard. Characterization of the radiation tolerance of cryogenic diodes for the High Luminosity LHC inner triplet circuit. Phys. Rev. Accel. Beams, 235:53502, may 2020. URL: https://link.aps.org/doi/10.1103/PhysRevAccelBeams.23.053502.

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

  • B Lindstrom, P Bélanger, L Bortot, R Denz, M Mentink, E Ravaioli, F Rodriguez Mateos, R Schmidt, J Uythoven, M Valette, A Verweij, C Wiesner, D Wollmann, and M Zerlauth. Fast failures in the LHC and the future high luminosity LHC. Phys. Rev. Accel. Beams, 238:81001, aug 2020. URL: https://link.aps.org/doi/10.1103/PhysRevAccelBeams.23.081001.

  • B Lindstrom, P Bélanger, A Gorzawski, J Kral, A Lechner, B Salvachua, and Others. Dynamics of the interaction of dust particles with the LHC beam. Physical Review Accelerators and Beams, 2020. URL: https://journals.aps.org/prab/abstract/10.1103/PhysRevAccelBeams.23.124501.

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

2019

  • B Lindstrom, H Bartosik, T Bohl, A Butterworth, R Calaga, L R Carver, V Kain, T E Levens, G Papotti, R Secondo, J Uythoven, M Valette, G Vandoni, J Wenninger, D Wollmann, and M Zerlauth. Machine Protection Experience from Beam Tests with Crab Cavity Prototypes in the CERN SPS. Journal of Physics: Conference Series, 1350:12004, nov 2019. URL: https://doi.org/10.1088/1742-6596/1350/1/012004.