17–22 May 2026
C.I.D
Europe/Zurich timezone

New capabilities of SIS18 after upgrade program as FAIR injector.

THP4002
21 May 2026, 16:00
2h
C.I.D

C.I.D

Deauville, France
Poster Presentation MC4.A04: Hadron accelerators: Circular Accelerators Poster session

Speaker

Jens Stadlmann (GSI Helmholtz Centre for Heavy Ion Research)

Description

SIS18, the main synchrotron of the present GSI accelerator complex, will serve as booster for the FAIR facility. Several major and minor upgrade programs were realized since 2008 to improve SIS18 for this purpose. We will report on new capabilities of the synchrotron for present and future user operation, which were not directly attributed to FAIR injector operation.
Namely, a spill feedback system to control macroscopic spill shape and optimize spill microstructure during slow extraction. The operation of SIS18 with the new FAIR control system in conjunction with the RF upgrades allows beam operation without restrictions at lower injection energies. Acceleration of two beams consisting of ions with different mass to charge ratios at different revolution frequencies during acceleration are now possible and were successfully demonstrated in 2025. Possible users are medical research and plasma physics.
As outlook we describe future plans for beam shaping before fast extraction for medical research.

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Author

Jens Stadlmann (GSI Helmholtz Centre for Heavy Ion Research)

Co-authors

Andrii Pastushenko (GSI Helmholtz Centre for Heavy Ion Research) David Ondreka (GSI Helmholtz Centre for Heavy Ion Research) Dieter Lens (GSI Helmholtz Centre for Heavy Ion Research) Holger Liebermann (GSI Helmholtz Centre for Heavy Ion Research) Peter Spiller (GSI Helmholtz Centre for Heavy Ion Research) Philipp Niedermayer (GSI Helmholtz Centre for Heavy Ion Research)

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