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Pulsed Electron Lenses for Space Charge Mitigation.

Adrian Oeftiger1, Oliver Boine-Frankenheim1,2

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|May 10, 2024
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Pulsed electron lenses can significantly increase the intensity limits of synchrotrons, which are crucial for high-brightness hadron beams. Simulations show a 50% increase in the space charge limit for the SIS100 synchrotron.

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Area of Science:

  • * Particle accelerator physics
  • * Beam dynamics
  • * High-energy physics instrumentation

Background:

  • * Synchrotrons face intensity limitations due to space charge effects, hindering the production of high-brightness hadron beams.
  • * Betatron resonances exacerbate space charge limitations in particle accelerators.
  • * Electron lenses offer a potential solution for mitigating space charge effects.

Purpose of the Study:

  • * To investigate the effectiveness of pulsed electron lenses in overcoming space charge limitations in synchrotrons.
  • * To quantify the potential increase in beam intensity using electron lenses.
  • * To model and simulate the impact of electron lenses on beam dynamics within a realistic synchrotron environment.

Main Methods:

  • * Detailed 3D tracking simulations were employed.
  • * A realistic machine model and space charge model were utilized.
  • * The study focused on the Facility for Antiproton and Ion Research (FAIR) SIS100 synchrotron.

Main Results:

  • * A low, symmetric number of electron lenses increased the space charge limit by up to 50% for the SIS100 synchrotron.
  • * A larger number of electron lenses demonstrated a conceptual 100% increase in the space charge limit.
  • * The performance gain saturated rapidly, approaching the theoretical 2D limit.

Conclusions:

  • * Pulsed electron lenses are a promising technology for enhancing synchrotron performance.
  • * Electron lenses can effectively mitigate space charge limitations, enabling higher beam intensities.
  • * The study provides valuable insights for optimizing electron lens configurations in future accelerator designs.