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Title	Performance of a Fast Kicker Magnet for Rare-RI Ring
Authors	H. Miura, I. Kato, T. Nishimura, S. Omika, T. Suzuki, N. Tadano, Y. Takeuchi, T. Yamaguchi Saitama University, Saitama, Japan Y. Abe, Y. Yamaguchi RIKEN, Saitama, Japan Z. Ge IMP/CAS, Lanzhou, People's Republic of China K. Hiraishi, Y. Ichikawa, A. Ozawa, S. Suzuki, Y. Tajiri University of Tsukuba, Graduate School of Pure and Applied Sciences,, Tsukuba, Ibaraki, Japan T. Moriguchi UTTAC, Tsukuba, Ibaraki, Japan D. Nagae, S. Naimi, F. Suzaki, T. Uesaka, M. Wakasugi RIKEN Nishina Center, Wako, Japan
Abstract	We developed a fast kicker magnet for the Rare-RI Ring at the RI Beam Factory (RIBF) in RIKEN. The Rare-RI Ring is a storage ring developed to measure masses of unstable nuclei with a precision in the order of 10⁻⁶ *. The unstable nuclei are randomly produced in secondary beams by nuclear reactions of a DC primary beam from the RIBF accelerator complex, and their yields are as small as 1 event/day. Therefore, we apply the individual injection method to perform mass measurements of rare RI efficiently **. The developed kicker magnet is distributed constant type. The shape of magnetic field is essential to the individual injection, and the timing property is given by the inductance and capacitance components of the kicker. Based on results of simulations conducted for the equivalent electronic circuit, we optimized the electrodes and ferrite cores of the kicker. In June, we carried out the first commissioning of Rare-RI Ring using a 78Kr³⁶⁺ beam with an energy of 167 MeV/nucleon. We succeeded in injecting and extracting particle-by-particle by using the kicker system. In this contribution, we will report details of the kicker magnet and will show the performance evidenced at the commissioning.
Footnotes & References	* A. Ozawa et al., Prog. Theor. Exp. Phys. 2012 (2012) 03C009. ** I.Meshkov et al.,Proceedings of EPAC 2004, Lucerne, Switzerland.
Paper	download MOPA23.PDF [0.532 MB / 3 pages]
Conference	HIAT2015, Yokohama, Japan
Proceedings	Link to full HIAT2015 Proccedings
Session	Monday Poster Session (A)
Date	07-Sep-15   16:00–18:00
Main Classification	Synchrotrons and Storage Rings
Keywords	kicker, injection, simulation, timing, storage-ring
Publisher	JACoW, Geneva, Switzerland
Editors	Osamu Kamigaito (RIKEN, Wako, Japan); Schaa, Volker R.W. (GSI, Darmstadt, Germany); Kazunari Yamada (RIKEN, Wako, Japan)
ISBN	978-3-95450-131-1
Published	February 2016
Series	Heavy Ion Accelerator Technology Conference (13th)
Copyright	Copyright © 2016 by JACoW, Geneva, Switzerland     cc Creative Commons Attribution 3.0