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| Title | Beam Confinement Dynmics in a Barrier Bucket | |||||
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| Abstract | Barrier bucket beam trapping has some history. For the first time Griffin proposed this method and demonstrated in Tevatron project in 1983*. There the barrier voltage has been generated in the way that higher harmonic components of RF voltage are superimposed. Since then several groups tried this method and it has been utilized in a routine operation of Fermilab Antiproton Recycler . The induction synchrotron concept was proposed in 2000. Barrier bucket created by the pulse voltages has been assumed for beam confinement in this accelerator. Its concept was confirmed in the experiment using the 12 GeV PS in 2006**. From the early days of barrier bucket development chaotic-like motions of trapped particles in the phase space have attracted our concerns . However there are no systematic studies focusing on this point. The paper will discuss what causes such chaotic motions and how it is sensitive to barrier bucket parameters such as the voltage pulse profile with a finite rising/falling time and its amplitude. We will propose what counter measures are effective in order to mitigate increasing of the longitudinal emittance caused by this instability. | |||||
| Footnotes & References | * J. Griffin et al., IEEE Trans. Nucl. Sci. NS-30, 3502, 21-23 Mar. 1983. ** Ken Takayamaet et al. , "Induction Synchrotron" (Springer, Heidelberg, 2011). |
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| Paper | download MOPA22.PDF [1.870 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 | induction, emittance, acceleration, experiment, simulation | |||||
| 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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