Magnetic and Cryogenic Design of the KATRIN WGTS Superconducting Magnet

KATRIN is the most advanced beta-decay experiment for measuring the rest mass of the neutrino. Within this experiment, the Windowless Gaseous Tritium Source (WGTS) is a sophisticated cryogenic and magnetic system of 16 meter length incorporating in total 21 superconducting solenoid coils and additionally four dipoles surrounding an accurately temperature-stabilized beam tube. The size and complexity of the system requests thorough design both for the magnetic and cryogenic aspects. The design of the system is near completion and the fabrication has started.