Superconductivity for Sustainable Energy Systems and Particle Accelerators

Particle accelerators offer unique opportunities for research in a wide variety of fields. This diversity is also expressed in a wide variety of requirements for the respective technologies of the machines. With a new understanding of the importance of climate change and the resulting necessity for sustainable operation of the machines key technologies have to be evaluated under new aspects....

A key strategic approach to making accelerator-driven light sources more sustainable is to reduce their size. In the case of e.g. Free-Electron Lasers this size reduction can be achieved by using short-period undulators and high-gradient accelerating structures, ranging from X-band structures down to laser-plasma accelerators (LPA). HTS magnet technology can play a key role in this approach,...

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...

AC loss generated in a superconducting cable during variation of magnetic field is essential property affecting its use in pulsed magnets for particle accelerators or fusion tokamaks. It can be shown, that in round high-temperature superconducting (HTS) cables made from coated conductor (CC) tapes, the hysteresis loss is proportional to the tape width. Then a plausible measure for reducing it...

High critical currents and magnetic field resilience of tape-based high-temperature superconductors (HTS) enable magnets to be constructed with fields above 20 T. However, high-field magnets are often required to operate with pulsed and varying magnetic fields, which results in problematic AC losses. Additionally, highly uneven local mechanical straining of the superconducting tape, due to...

The European project IFAST's Work Package 8 (WP8) focuses on advancing Innovative Superconducting Magnets, with a specific emphasis on exploring the potential of Canted Cosine Theta (CCT) magnets wound with High-Temperature Superconductors (HTS). These superconducting magnets have the capacity to make a significant impact by reducing the size and cost of synchrotrons and gantries used in...

The linear accelerator HELIAC will provide heavy ions with particle energies of 3.5 MeV/u to 7.6 MeV/u (A/Z = 6) at the GSI Helmholtzzentrum für Schwerionenforschung. Thanks to supercon-ducting radio-frequency technology, it will be able to deliver high average beam currents in continuous-wave mode.
The radio-frequency resonators of the so-called Cross-bar H-mode type are being developed in...