The PANDA Magnet System

The PANDA (antiProton ANnihilation in DArmstadt) experiment at FAIR (Facility for Antiproton and Ion Research) in Darmstadt, Germany, will use an antiproton beam with unprecedented momentum resolution and will achieve very high luminosity, thanks to a high-density internal hydrogen target. To allow the best angular acceptance, the detector will be composed of two independent spectrometers, the Target Spectrometer (TS) and the Forward Spectrometer (FS). The central part of the TS will be a superconducting solenoid with 2 T central field with an instrumented return yoke for muon spectrometry. At the heart of the FS a normal-conducting dipole will operate with 2 field integral. Both magnets have been designed to cope with stringent requirements on field uniformity and operational reliability. Further requirements for a smooth integration of the sub-detectors housed inside the two magnets have had to be taken into account. A complete project for both the magnets has been developed and approved by the FAIR Technical management as Technical Design Report. The paper presents a summary of the magnetic, thermal, mechanical and technical challenges of the PANDA magnet system.