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Longitudinal dynamics studies for ISIS upgrades
RE Williamson (STFC Rutherford Appleton Lab.) (Pr.Au.)
BG Pine (STFC Rutherford Appleton Lab.)
CM Warsop (STFC Rutherford Appleton Lab.)
ISIS is the pulsed neutron and muon source based at the Rutherford Appleton Laboratory in the UK. Operation is centred on a loss-limited 50 Hz proton synchrotron which accelerates ~3e13 protons per pulse from 70 MeV to 800 MeV, corresponding to mean beam powers of 0.2 MW. A number of ISIS upgrades are currently under study. One option replaces the linac for higher energy injection into the existing ring, potentially increasing beam current through reduction in space charge. The other main option adds a new ~3 GeV Rapid Cycling Synchrotron (RCS), boosting the energy of the beam to provide higher beam power. For both these upgrade routes, longitudinal dynamics of the existing and proposed new rings play a crucial role in achieving high intensity with low loss. This paper summarizes work underway to optimize the longitudinal dynamics of the upgrade rings, which is presently focused on development and checking of simulation codes. This includes comparison of different space charge algorithms and codes.
Paper In Conference Proceedings
In 23rd Particle Accelerator Conference (PAC 09), Vancouver, Canada, 4-8 May 2009, (2009).
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