CERN Accelerating science

Article
Title	Preliminary Tests Of The Decris-sc Ion Source
Author(s)	Efremov, A ; Anischenko, N ; Bechterev, V ; Bogomolov, S L ; Bondarenko, P G ; Datskov, V I ; Dmitriev, S ; Drobin, V ; Lebedev, A ; Leporis, M ; Malinowski, H ; Nikiforov, A ; Paschenko, S V ; Seleznev, V ; Shishov, Yu A ; Smirnov, Yu ; Tsvineva, G ; Yakovlev, B ; Yazvitsky, N Yu
Publication	2004
In:	19th Russian Accelerator Conference, Dubna, Russian Federation, 4 - 9 Oct 2004, pp.109
Subject category	Accelerators and Storage Rings
Abstract	A new "liquid He-free" superconducting Electron Cyclotron Resonance Ion Source DECRIS-SC, to be used as injector for the IC-100 small cyclotron, has been designed by FLNR and LHE JINR. The main feature is that a compact refrigerator of Gifford-McMahon type is used to cool the solenoid coils. For the reason of very small cooling power at 4.2 K (about 1 W) our efforts were to optimize the magnetic structure and minimize an external heating of the coils. The maximum magnetic field strength is 3 T and 2 T in injection and extraction region respectively. For the radial plasma confinement a hexapole made of NdFeB permanent magnet is used. The source will be capable of ECR plasma heating using different frequencies (14 GHz or 18 GHz). To be able to deliver usable intensities of solids, the design is also allow axial access for evaporation oven and metal samples using the plasma sputtering technique. Very preliminary results of the source test are presented.