Title :
Effects of magnetic field tracking errors on beam dynamics at J-PARC RCS
Author :
Hotchi, H. ; Noda, F. ; Machida, S.
Author_Institution :
JAEA, Tsukuba
Abstract :
In order to realize high intense operations in proton synchrotrons, a large ring acceptance is commonly required. In such a machine, intrinsic nonlinear magnetic fields play a significant role, and induced high-order resonances can strongly limit the betatron tunability. In such a situation, a clear understanding of a betatron tune change during the revolution, such as chromatic tune shift, space-charge incoherent tune shift and tune shift caused by magnetic field tracking errors, is a key issue. In this paper, we show results from space-charge simulations introducing magnetic field tracking errors and discuss the combined effects of various tune shifts on beam dynamics for the J-PARC 3- GeV rapid-cycling synchrotron.
Keywords :
betatrons; magnetic fields; particle beam dynamics; particle beam injection; proton accelerators; resonance; space charge; synchrotrons; tracking; J-PARC RCS; J-PARC rapid-cycling synchrotron; beam dynamics; betatron tunability; chromatic tune shift; induced high order resonances; injection energy; intrinsic nonlinear magnetic fields; magnetic field tracking error effects; proton synchrotrons; space charge simulations; Collimators; Error correction; Magnetic fields; Magnetic resonance; Nonlinear magnetics; Particle beam injection; Particle beams; Protons; Structural beams; Synchrotrons;
Conference_Titel :
Particle Accelerator Conference, 2007. PAC. IEEE
Conference_Location :
Albuquerque, NM
Print_ISBN :
978-1-4244-0916-7
DOI :
10.1109/PAC.2007.4439962
