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- J.-B. Lagrange, D.J. Adams, C. Brown, H.V. Cavanagh, I.S.K. Gardner, P.T. Griffin-Hicks, B. Jones, D.J. Kelliher, A.P. Letchford, S. Machida, B.G. Pine, C.R. Prior, C.T. Rogers, J.W.G. Thomason, C.M. Warsop, R.E. Williamson
STFC/RAL/ISIS, Chilton, Didcot, Oxon, United Kingdom
- J. Pasternak, J.K. Pozimski
STFC/RAL, Chilton, Didcot, Oxon, United Kingdom
- J. Pasternak, J.K. Pozimski
Imperial College of Science and Technology, Department of Physics, London, United Kingdom
- G.H. Rees
STFC/RAL/ASTeC, Chilton, Didcot, Oxon, United Kingdom
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ISIS, the spallation neutron source at the Rutherford Appleton Laboratory in the UK, uses a 50 Hz, 800 MeV proton RCS to provide a beam power of 0.2 MW, delivered in 0.4 us long pulses. Detailed studies are now under way for a major upgrade. Accelerator designs using FFAs, conventional accumulator and synchrotron rings are being considered for the required MW beam power. This paper summarises the scope of the different research incorporating results from recent target studies and user consultations. Preliminary results for Fixed Field Alternating gradient (FFA) rings and conventional rings located in the existing ISIS synchrotron hall are presented.
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