TY  - CONF
AU  - Boine-Frankenheim, Oliver
AU  - Kornilov, Vladimir
TI  - Instability mitigation using octupoles in bunches with space-charge
CY  - Geneva, Switzerland
PB  - JACoW Publishing
M1  - GSI-2025-00522
SP  - 2673 - 2676
PY  - 2023
N1  - Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. 
AB  - Octupole magnets are a central mitigation method against the transverse collective instabilities expected for the high-intensity operation of the SIS18 and SIS100 synchrotrons in the FAIR project. For these beam parameters, the self-field space-charge effect dominates the betatron footprint, and strongly modifies the instability drive and the Landau damping properties. The space-charge tune shifts are related to all three incoherent amplitudes, and is an intrinsic interaction. We consider all these effects and study Landau damping of head-tail modes due to the combination of octupoles and space-charge. Using the data from experimental instability observations, and particle tracking simulations, we provide estimations for the expected high-intensity operation of the SIS synchrotrons.
T2  - 14th International Particle Accelerator Conference
CY  - 7 May 2023 - 12 May 2023, Venice (Italy)
Y2  - 7 May 2023 - 12 May 2023
M2  - Venice, Italy
KW  - Accelerator Physics (Other)
KW  - mc5-beam-dynamics-and-em-fields - MC5: Beam Dynamics and EM Fields (Other)
KW  - mc5-d06-coherent-and-incoherent-instabilities-measurements-and-countermeasures - MC5.D06: Coherent and Incoherent Instabilities Measurements and Countermeasures (Other)
LB  - PUB:(DE-HGF)8
DO  - DOI:10.18429/JACOW-IPAC2023-WEPA015
UR  - https://repository.gsi.de/record/358338
ER  -