Accelerator Seminar

Superconducting magnets for SIS100 from design to series testing

by Dr Anna Szwangruber (GSI)

Hörsaal (KBW)



The FAIR project is a new international accelerator complex that is currently under construction in Darmstadt, Germany. The high intensity primary beam for the experiments will be provided by the SIS100 - a heavy ion synchrotron with magnetic rigidity of 100 Tm. SIS100 magnets inherits many construction innovations from the Nuclotron – a superconducting synchrotron built in Dubna (Russia) in the end of 80’, e.g. a novel superconducting cable and window-frame super-ferric design principles. Following many improvements aiming AC loss reductions and field quality, the SIS100 will be the fastest machine in world in terms of cycling rate (4 T/s). SIS100 has a circumference of approximately 1.1 km and it is divided into six sectors. Each sector contains 14 cells. Cells 1 to 3 form a straight section interrupted by ambient temperature segments while cells 4 to 14 form an arc which is a continuous cryogenic line. In total, the machine utilizes over 400 fast cycling superconducting magnets. The magnet production has been assigned either to industry or to collaboration partners. As a part of quality assurance, all magnets must be tested at ambient and cryogenic conditions in order to check and verify their parameters and performance. The series dipole magnets are currently being tested at GSI Helmholtzzentrum für Schwerionenforschung GmbH (Darmstadt, Germany). We present an overview of development, the up-to-date status of the series dipole magnet production and testing as well as an overview on the selected measurement systems.