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Insertion of STC into TRT at the Department of Physics, Oxford
Credit: CERN

Professor Adrian Oeftiger

Associate Professor of Physics

Research theme

  • Accelerator physics

Sub department

  • Particle Physics
adrian.oeftiger@physics.ox.ac.uk
Telephone: +44 186 52 73318
Denys Wilkinson Building, room 620
  • About
  • Publications

Pulsed Electron Lenses for Space Charge Mitigation.

Physical review letters 132:17 (2024) 175001

Authors:

Adrian Oeftiger, Oliver Boine-Frankenheim

Abstract:

To produce ultimate high-brightness hadron beams, synchrotrons need to overcome a most prominent intensity limitation, i.e., space charge. This Letter characterizes the potential of pulsed electron lenses in detailed 3D tracking simulations, key to which is a realistic machine and space charge model. The space charge limit, imparted by betatron resonances, is shown to be increased by up to 50% using a low symmetric number of electron lenses in application to the Facility for Antiproton and Ion Research SIS100 synchrotron. Conceptually, a 100% increase is demonstrated with a larger number of electron lenses, which is found to rapidly saturate near the theoretical 2D limit.
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Proof-of-Principle Direct Measurement of Landau Damping Strength at the Large Hadron Collider with an Antidamper.

Physical review letters 126:16 (2021) 164801

Authors:

SA Antipov, D Amorim, N Biancacci, X Buffat, E Métral, N Mounet, A Oeftiger, D Valuch

Abstract:

Landau damping is an essential mechanism for ensuring collective beam stability in particle accelerators. Precise knowledge of the strength of Landau damping is key to making accurate predictions on beam stability for state-of-the-art high-energy colliders. In this Letter, we demonstrate an experimental procedure that would allow quantifying the strength of Landau damping and the limits of beam stability using an active transverse feedback as a controllable source of beam coupling impedance. In a proof-of-principle test performed at the Large Hadron Collider, stability diagrams for a range of Landau octupole strengths have been measured. In the future, the procedure could become an accurate way of measuring stability diagrams throughout the machine cycle.
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Beam-based identification of magnetic field errors in a synchrotron using deep Lie map networks

Physical Review Accelerators and Beams American Physical Society (APS) 28:2 (2025) 024601

Authors:

Conrad Caliari, Adrian Oeftiger, Oliver Boine-Frankenheim
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Artificial intelligence for advancing particle accelerators

Europhysics News 56:1 (2025) 15-19

Authors:

A Ghribi, K Cassou, B Dalena, A Eichler, H Guler, AK Mistry, A Oeftiger, T Shea, G Valentino, CP Welsch
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EuCAIF: European Coalition for AI in Fundamental Physics

Nuclear Physics News 35:1 (2025) 27-28

Authors:

J Messchendorp, A Belias, A Ipp, A Oeftiger
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