Superconductivity for Sustainable Energy Systems and Particle Accelerators

A round hollow conductor with a low temperature superconductor (NbTi) is used to
the FAIR magnets for the heavy ion synchrotron SIS100 of FAIR. With high capability of relieving a heat from AC losses, the cable enables to operate the magnets with a fast ramp rate such as 27 kA/sec. corresponding 4 T/sec., which are required for the heavy ion acceleration. For a future heavy ion accelerator such as SIS300, which will be installed into the FAIR SIS100 tunnel, a cable with a higher transport current and a comparable ramp rate is required for a higher magnetic field magnet. We are considering a round hollow cable with a high temperature superconductor (HTS) and investigating technical feasibility and possible magnet design for accelerators. We will present studies from the iFAST (WP-8.6) and discuss our goal and challenges, and possibilities for other applications.