JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@unpublished{oeftiger:hb2023-moa4i2,
author = {A. Oeftiger and O. Boine-Frankenheim},
title = {{Space-charge Limits and Possible Mitigation Approaches in the FAIR Synchrotrons}},
% booktitle = {Proc. HB'23},
booktitle = {Proc. ICFA Adv. Beam Dyn. Workshop High-Intensity High-Brightness Hadron Beams (HB'23)},
eventdate = {2023-10-09/2023-10-13},
language = {english},
intype = {presented at the},
series = {ICFA Advanced Beam Dynamics Workshop on High-Intensity and High-Brightness Hadron Beams},
number = {68},
venue = {Geneva, Switzerland},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {04},
year = {2024},
note = {presented at HB'23 in Geneva, Switzerland, unpublished},
abstract = {{To fully exploit the potential of the new Facility for Antiproton and Ion Research (FAIR), the key synchrotrons SIS18 and SIS100 should be operated at the "space charge limit" for light- and heavy-ion beams at a tolerable low beam loss of a few percent per cycle. A detailed 3D tracking model with collective effects (space charge and impedance) has been established including a realistic magnet field error model and the Landau Damping octupoles. The error model for SIS100 is based on precise bench measurements of the main magnets, the one for SIS18 on a novel data-driven beam-based approach named Deep Lie Map Network. Simulations of the full one-second SIS100 accumulation plateau determine the maximum achievable bunch intensity and the corresponding low-loss working point region. Several mitigation approaches have been scrutinised for their impact on the space charge limit: beta-beat correction to suppress the half-integer resonance, bunch flattening via double harmonic RF, and pulsed electron lenses (e-lenses). An optimum configuration for pulsed e-lens operation has been determined, options for additional coherent stabilisation as a Landau damping e-lens are currently studied.}},
}