Conceptual Design of Cryogenic Facilities for Super-FRS of FAIR

Abstract

We present the concept design of the cryogenic feedbox for the superconducting dipole and quadrupole/multi-pole magnets of the Super-FRS (FRagment Separator) project. It also includes the warm gas control and management, the instrumentation and the control logic related with different operation modes of the magnet cooling. As one of the most important trip scenarios for cryogenic facilities, the over pressure in the magnet helium vessel caused by quench has been simulated for a prototype dipole. For safety reason, the safety relief valve and its sizing have also been taken into account.

Cryogenic supply for accelerators and experiments at FAIR

“…The fragment separator SuperFRS allows the production of rare isotope beams with highest intensities and consists of a pre-and a main-separator followed by three branches for experiments, the so called High-EnergyBranch, Low-Energy-Branch, and Ring-Branch [4]. The optical lattice of the overall SuperFRS has a length of about 460 m in total (Figure 1), in which the beam line with length of about 365 m belongs to the FAIR start version.…”