The superconducting extraction magnet system EMC2 for the AGOR cyclotron

A new superconducting extraction magnet system EMC2, has recently been installed in the AGOR cyclotron. It consists of two almost identical and slightly bent modules to accommodate the curved extraction beam. The coil system of each module consists of three coils located symmetrically around the median- plane, providing a main dipole field, a gradient field and a dipole correction field. The coil system is indirectly cooled by means of liquid helium flowing through channels located in the upper and lower part of both modules. In order to reduce the dissipation in the 4 K region due to beam losses, a 20 K radiation shield has been installed. Positioning of the extraction system to select a certain beam trajectory is provided by a guiding and feed-through system. This paper deals with the design and manufacturing of the superconducting and cryogenic parts of the EMC2 extraction system and the results of a successful test are presented.<
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