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TY - CONF AU - Artamonov, S.A. AU - Chernov, A.N. AU - Ivanov, E.M. AU - Riabov, G.A. AU - Tonkikh, V.A. ED - Kuzin, Maxim ED - Schaa, Volker RW TI - High Efficiency Stripping Extraction on 80 MeV H-minus Isochronous Cyclotron in PNPI J2 - Proc. of RuPAC2016, St. Petersburg, Russia, November 21-25, 2016 C1 - St. Petersburg, Russia T2 - Russian Particle Accelerator Conference T3 - 25 LA - english AB - H-minus cyclotron has the advantage that high intensity internal beam can be extracted from the acceleration chamber with practically 100% efficiency by transformation H-minus ions into H-plus ion by using thin foil. The extraction system is consists from the probe with stripping foil, extraction window in the vacuum chamber and two correct magnets to match the extracted beam with beam transport line. The beam optics calculations in the measured magnetic field make it possible to find optimal relative position of the extraction system elements as well the parameters of the extracted beam with energy 40 - 80 MeV. At present time the beam is extracted from the chamber with efficiency 100 % and there is good agreement with the optic calculations. PB - JACoW CP - Geneva, Switzerland SP - 176 EP - 178 KW - cyclotron KW - extraction KW - ion KW - H-minus KW - acceleration DA - 2017/02 PY - 2017 SN - 978-3-95450-181-6 DO - 10.18429/JACoW-RuPAC2016-TUCASH03 UR - http://jacow.org/rupac2016/papers/tucash03.pdf ER -