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| Title | Improvement of Mass-to-Charge Ratio Resolution of the JAEA AVF Cyclotron Using a Beam Chopping System | |||||
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| Abstract | A mass-to-charge ratio (M/Q) resolution of the JAEA cyclotron (K110) is about 3,300 and this high-resolution enables us to quickly change the ion species to be accelerated by a cocktail beam acceleration technique. In this technique, a few ion species having almost the same M/Q are injected into the cyclotron, and the ion species whose cyclotron frequency is completely matches the acceleration frequency is extracted from the cyclotron. The ion species extracted from the cyclotron can be changed by adjusting the acceleration frequency corresponding to the M/Q difference. To improve the M/Q resolution, a new technique is being developed by combining the cocktail beam acceleration and beam chopping techniques. The beam chopping system consists of a pre-beam kicker installed in the beam injection line and a post-beam kicker downstream of the cyclotron. The chopping system is able to pick up beam bunches arbitrarily from a pulse train of an ion beam. At present, we have succeeded to separate the 250 MeV 40Ar¹⁰⁺ beam from the 225 MeV 36Ar⁹⁺, and the M/Q resolution was significantly improved from 3,300 to 25,000 by this new method. | |||||
| Paper | download MOPA13.PDF [0.318 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 | Room Temperature and Superconducting Cyclotrons | |||||
| Keywords | ion, cyclotron, acceleration, ion-source, kicker | |||||
| 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) | |||||
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