IPAC'10 - List of Authors (Easton, M.J.)

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Easton, M.J.

Paper	Title	Page
MOPEA021	PAMELA Overview and Status	112
	K.J. Peach, J.H. Cobb, S.L. Sheehy, H. Witte, T. Yokoi JAI, Oxford M. Aslaninejad, M.J. Easton, J. Pasternak Imperial College of Science and Technology, Department of Physics, London R.J. Barlow, H.L. Owen, S.C. Tygier UMAN, Manchester C.D. Beard, P.A. McIntosh, S.M. Pattalwar, S.L. Smith, S.I. Tzenov STFC/DL/ASTeC, Daresbury, Warrington, Cheshire N. Bliss, T.J. Jones, J. Strachan STFC/DL, Daresbury, Warrington, Cheshire T.R. Edgecock, J.K. Pozimski STFC/RAL, Chilton, Didcot, Oxon R.J.L. Fenning, A. Khan Brunel University, Middlesex I.S.K. Gardner, D.J. Kelliher, S. Machida STFC/RAL/ASTeC, Chilton, Didcot, Oxon M.A. Hill GIROB, Oxford C. Johnstone Fermilab, Batavia B. Jones, B. Vojnovic Gray Institute for Radiation Oncology and Biology, Oxford R. Seviour Cockcroft Institute, Lancaster University, Lancaster
	The status of PAMELA (Particle Accelerator for MEdicaL Applications) ' an accelerator for proton and light ion therapy using a non-scaling FFAG (ns-FFAG) accelerator ' is reviewed and discussed.
MOPEC076	Integrated Design Method and Beam Dynamics Simulations for the FETS Radio Frequency Quadrupole	645
	S. Jolly, M.J. Easton Imperial College of Science and Technology, Department of Physics, London A.P. Letchford STFC/RAL/ISIS, Chilton, Didcot, Oxon J.K. Pozimski STFC/RAL, Chilton, Didcot, Oxon
	A 4m-long, 324MHz four-vane RFQ, consisting of four coupled sections, is currently being designed for the Front End Test Stand (FETS) at RAL in the UK. A novel design method, integrating the CAD and electromagnetic design of the RFQ with beam dynamics simulations, is being used to optimise the design of the RFQ. Basic RFQ parameters are produced with the RFQSIM code. A full CAD model of the RFQ vane tips is produced in Autodesk Inventor, based upon these parameters. This model is then imported into a field mapping code to produce a simulation of the electrostatic field around the vane tips. This field map is then used to model the beam dynamics within the RFQ using General Particle Tracer (GPT). Previous studies have been carried out using field mapping in CST EM Studio. A more advanced technique using Comsol Multiphysics and Matlab, that more tightly integrates the CAD modelling, field mapping and beam dynamics simulations, is described. Results using this new method are presented and compared to the previous optimisation process using field maps from CST.
MOPD060	Design Optimisation and Particle Tracking Simulations for PAMELA Injector RFQ	822
	M.J. Easton, M. Aslaninejad, S. Jolly, J.K. Pozimski Imperial College of Science and Technology, Department of Physics, London K.J. Peach JAI, Egham, Surrey
	The PAMELA (Particle Accelerator for MEdicaL Applications) project aims to design an ns-FFAG accelerator for cancer therapy using protons and carbon ions. For the injection system for carbon ions, an RFQ is one option for the first stage of acceleration. Our integrated RFQ design process* has been developed further using Comsol Multiphysics for electric field modelling. The design parameters for the RFQ are automatically converted to a CAD model using Autodesk Inventor, and the electric field map for this model is simulated in Comsol. Particles can then be tracked through this field map using Pulsar Physics' General Particle Tracer (GPT). Our software uses Visual Basic for Applications and MATLAB to automate this process and allow for optimisation of the RFQ design parameters based on particle dynamical considerations. Possible designs for the PAMELA RFQ, including super-conducting and normal-conducting solutions, will be presented and discussed, together with results of the field map simulations and particle tracking for these designs. * M J Easton et al., RFQ Design Optimisation for PAMELA Injector, PAC09, Vancouver, Canada, April 2009, FR5REP066.
THPEB033	Injection of Proton and Carbon 6+ into the Non-scaling FFAG	3957
	M. Aslaninejad, M.J. Easton Imperial College of Science and Technology, Department of Physics, London J. Pasternak, J.K. Pozimski STFC/RAL, Chilton, Didcot, Oxon K.J. Peach, T. Yokoi JAI, Oxford
	For the PAMELA medical non-scaling FFAG, carbon 6+ as well as proton particles are required. The general injection layout based on a cyclotron for proton and a Linac for carbon is considered. There are two options for pre-accelerating carbon ions for PAMELA, either accelerating carbon with the charge state 4+ from the ion source and stripping after the pre-accelerator or directly accelerating carbon 6+ ions all the way from the ion source. For both options solution has been investigated. Simulations of beam dynamics for both particle species are presented. The resulting schemes based on either the single turn or multiturn injection into the first FFAG ring are discussed.
THPEB034	The Design of the MEBT for the PAMELA Medical FFAG	3960
	M. Aslaninejad, M.J. Easton, J. Pasternak, J.K. Pozimski Imperial College of Science and Technology, Department of Physics, London K.J. Peach, T. Yokoi JAI, Oxford
	The PAMELA medical FFAG complex under design in the UK, aims to operate with both proton and carbon beams for hadron therapy. Medium energy beam transfer(MEBT) of PAMELA consists of the proton beam line coming out of the injector cyclotron, carbon beam transfer from the independent carbon 6+ injector linac, switching dipole when both beam merge and transfer line toward the PAMELA NS-FFAG. The MEBT layout and design, which needs to incorporate the beam chopper for the intensity modulation are discussed. The careful matching of optical functions between various components in the MEBT and beam dynamics simulations are presented.