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

SIS100 - A new and unique heavy ion synchrotron under construction

THP4001
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

Peter Spiller (GSI Helmholtz Centre for Heavy Ion Research)

Description

SIS100 is a new and unique heavy ion synchrotron presently under construction at GSI, Darmstadt. It becomes the main accelerator of the international FAIR project and shall provide intense beams of all ions from Protons to Uranium. SIS100 is a fast ramped superconducting synchrotron and comprises lots of new technical features dedicated to the operation with high intensity, low charge state heavy ions. The major aim at designing SIS100 was the stabilization of the so called dynamic vacuum, which is the main challenge for minimizing charge exchange processes and corresponding beam loss at operation with low charge states. A new lattice concept, the so called charge separator lattice, cryogenic ion catchers, a LHe cooled and cryogenic UHV system and fast acceleration were chosen as major features of the overall machine concept. The functionality of this concept has been proven at the existing heavy ion synchrotron SIS18 and the SIS100 stringtest. Although SIS100 is a superconducting synchrotron, in order to serve the broad spectrum of users it shall provide a similar operation flexibility in terms of cycling as room temperature machines. In order to cope with the very different heat loads, dominated by AC loss in the magnet yokes, several technical measures have been implemented to assure a stable magnet cooling. The installation of SIS100 in the underground tunnel has been launched early 2024 and will lead into commissioning with beam in 2028.

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Author

Peter Spiller (GSI Helmholtz Centre for Heavy Ion Research)

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