The European Reactions with Relativistic Radioactive Beams of Exotic Nuclei (R3B) collaboration brings together 230 physicists from 63 institutes in 21 countries. The group has set up a study at GSI in Darmstadt, Germany to investigate the emerging physics of exotic nuclei with relativistic energies. This program requires the construction of a number of high performance experimental installations in the fields of inverse kinematic reactions, total detection of the reaction products, and momentum resolution. The GSI Large Acceptance Dipole (GLAD), a superconducting spectrometer, will be an essential component of the R3B detector assembly. The preliminary design for the project was carried out as part of the 5th European research and development framework program (FP5). The decision to fund the construction of the GLAD magnet was taken in October 2005 as part of FP6.
Left: The magnetic structure consisting of six trapezoidal coils. Center: The cold mass of the magnet consisting of the four coil enclosures, connecting plates and cryogenic supports. The electrical junction boxes connecting the superconducting cables are seen here against a blue background. In yellow: The 460 liter tank supplying the 4.5 K indirect cooling tubes in the convection circuit. Right: The cryostat next to its cryogenic satellite providing the external connections. It moves on an air cushion. The total mass of the magnet is 55 tonnes.
: Cold mass in the lower half of the cryostat. The upper part, wrapped in superinsulation, is the 460 liter helium tank supplying the thermosiphon.