HIISI, New 18 GHZ ECRIS for the JYFL Accelerator Laboratory
Koivisto, H., Tarvainen, O., Kalvas, T., Ranttila, K., Heikkinen, P., Xie, D., Machicoane, G., Thuillier, T., Skalyga, V., & Izotov, I. (2014). HIISI, New 18 GHZ ECRIS for the JYFL Accelerator Laboratory. In Proceedings of ECRIS 2014 : the 21st International Workshop on ECR Ion Sources (pp. 99-103). Institute of Applied Physics of the Russian Academy of Sciences. http://accelconf.web.cern.ch/AccelConf/ECRIS2014/papers/tuommh05.pdf
Authors
Xie, D. |
Date
2014Copyright
© 2014 CC-BY-3.0 and by the respective authors.
At the end of 2013 the Academy of Finland granted an
infrastructure funding for the JYFL Accelerator
Laboratory in order to increase beam intensities for the
international user community. The primary objective is to
construct a new high performance ECR ion source, HIISI
(Heavy Ion Ion Source Injector), for the K130 cyclotron.
Using room temperature magnets the HIISI has been
designed to produce about the same magnetic field
configuration as the superconducting ECRIS SUSI at
NSCL/MSU for 18 GHz operation. An innovative
structure will be used to maximize the radial confinement
and demagnetization safety margin of the permanent
magnets. The sextupole magnet is separated and insulated
from the plasma chamber providing two advantages: 1)
the permanent magnet can be cooled down to -10˚C to
increase its coercivity and 2) at the same time to reach
slightly higher radial field on the inner surface of the
plasma chamber. Comprehensive simulations were
performed with the radial heat load to analyse and address
all the heat loads and temperature distribution on the
permanent magnet. This information is crucial to define
the maximum plasma heating power and the grade of the
permanent magnets. In this article the magnetic field
design of HIISI and detailed innovative scheme for
sextupole magnet will be presented.
...


Publisher
Institute of Applied Physics of the Russian Academy of SciencesParent publication ISBN
978-3-95450-158-8Conference
Electron Cyclotron Resonance Ion Sources International WorkshopIs part of publication
Proceedings of ECRIS 2014 : the 21st International Workshop on ECR Ion Sources
Original source
http://accelconf.web.cern.ch/AccelConf/ECRIS2014/papers/tuommh05.pdfPublication in research information system
https://converis.jyu.fi/converis/portal/detail/Publication/25391633
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