The JYFL 18 GHz ECR ion source (HIISI) has been designed and constructed by the JYFL ion source group. The source was constructed in our own workshop, but the main components were obtained commercially. The first plasma in the source was on 10.4.2017, and the commissioning was started in September, 2017. For more information see:
H. Koivisto, O. Tarvainen, T. Kalvas, K. Ranttila, P. Heikkinen, D. Xie, G. Machicoane, T. Thuillier, V. Skalyga, I. Izotov, HIISI, new 18 GHz ECRIS for the JYFL accelerator laboratory, Proceedings of ECRIS-2014 (JACOW), Nizhny Novgorod, Russia, (2015), p. TUOMMH05, ISBN 978-3-95450-158-8.
T. Kalvas, O. Tarvainen, H. Koivisto, K. Ranttila, Thermal design of refridgerated hexapole 18 GHz ECRIS HIISI, Proceedings of ECRIS-2014 (JACOW), Nizhny Novgorod, Russia, (2015), p. WEOMMH04, ISBN 978-3-95450-158-8.
H. Koivisto, T. Kalvas, O. Tarvainen, J. Komppula, J. Laulainen, R. Kronholm, K. Ranttila, J. Tuunanen, T. Thuillier, D. Xie and G. Machicoane, Ion source research and development at University of Jyväskylä: Studies of different plasma processes and towards the higher beam intensities, Rev. of Sci. Instrum., 87(2), (2016), 02A725.
Main parameters
Volume of plasma chamber | 3.1 litres |
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Plasma volume | |
Microwave frequency | 18/14 GHz |
Typical max. microwave power | 2000/400 W |
Typical max. acceleration voltage | 20 kV |
Base vacuum | 8e-8 mbar |
BECR | 0.64 T |
BINJ | 2.8 T |
BEXT | 1.3 T |
BRAD | 1.3 T |
BMIN | 0.44 T |
Hexapole temperature | -20 - +15˚C |