Ecrevis Construction Progress Report

Ecrevis is a large external heavy ion source using the Electron Cyclotron Resonance, presently under construction at the L. L. N. Cyclotron Laboratory. Magnetic confining structure includes a superconducting hexapole and solenoids. Some design aspects of the superconducting system and of the microwave coupling system are discussed. A prototype mechanically cooled cryopump able to operate in high magnetic fields has been realized and has shown pumping speed of 8.500 l/s for air. The 16 m long low energy beam injection line has been realized and tested with beams produced by the first stage of the ECR source. The axial injection system in the cyclotron is described and is now almost completed.