| Paper |
Title |
Page |
| MOPAN107 |
Quadrupole Magnets for the 20 MeV FFAG, 'EMMA'
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413 |
| |
- N. Marks, B. J.A. Shepherd
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
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EMMA is a 20 MeV non-scaling Fixed Field Alternating Gradient accelerator (nsFFAG) proof-of-principle prototype, to be built at the Daresbury Laboratory as an accelerator physics experiment to explore the behaviour of such machines. Non-scaling FFAGs have potential applications in charged particle cancer therapy and also for particle physics; however, to date, no such accelerator has been constructed. The magnet designs present major challenges - the lattice is made up of 84 quadrupoles, with different horizontal offsets from the magnet centres in the focusing and defocusing quads. These offsets alone provide the necessary bending fields in the ring. The magnets are also very thin (55mm and 65mm yoke lengths) and end field effects therefore dominate. Careful design, followed by prototype construction and measurement, is essential. The magnets have been designed in 3D from the outset, using the CST EM Studio software. The paper will present the results of the design, showing how the magnets have been optimised to improve the integrated good gradient region, and will report on the progress of the prototyping work.
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| THPMN078 |
The CONFORM Project: Construction of a NonScaling FFAG and its Applications
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2886 |
| |
- R. J. Barlow
UMAN, Manchester
- N. Bliss
STFC/DL, Daresbury, Warrington, Cheshire
- T. R. Edgecock
STFC/RAL, Chilton, Didcot, Oxon
- N. Marks, H. L. Owen, M. W. Poole
STFC/DL/ASTeC, Daresbury, Warrington, Cheshire
- K. J. Peach
JAI, Oxford
- J. K. Pozimski
Imperial College of Science and Technology, Department of Physics, London
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The CONFORM project, recently funded as part of the UK 'Basic Technology' initiative, will build a 20 MeV Non-Scaling FFAG (EMMA) at Daresbury. The experience gained will be used for the design of a proton machine (PAMELA) for medical research, and other applications for Non-Scaling FFAGs in different regimes will be explored. The successful development of this type of accelerator will provide many opportunities for increased exploitation, especially for hadron therapy for treatment of tumours, and the project provides a framework where machine builders will work with potential user communities to maximise the synergies and help this to happen successfully.
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