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R Barlow,
J.S. Berg,
C. Beard,
N. Bliss,
J. Clarke,
M.K. Craddock,
J. Crisp,
R. Edgecock,
Y. Giboudot,
P. Goudket, [......],
Y.N. Rao,
Y. Saveliev,
S. Sheehy,
B. Shepherd,
R. Smith,
S. Smith,
S. Tzenov,
A. Wheelhouse,
C. White,
T. Yokoi
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ABSTRACT: Due to the combination of fixed magnetic field operation with strong focusing, non-scaling FFAGs have a significant potential for future particle accelerator applications. However, this technology has a number of unique features, which must be fully studied before this potential can be realised. To do this, a proof-of-principle non-scaling FFAG, called EMMA – Electron Model for Many Applications – has been constructed at the STFC Daresbury Laboratory in the UK. It has been designed by an international collaboration of accelerator scientists and engineers. It will demonstrate the principle of non-scaling FFAGs and be used to study the features of this type of accelerator in detail.
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment 01/2010; · 1.21 Impact Factor
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ABSTRACT: Until last year the CERN Neutrino Factory Working Group has been quite active together with other European laboratories. The sudden discovery of the bad financial situation at CERN due to the LHC construction put an abrupt halt to these studies. Lots of CERN activities were cut back to allow for the finishing of LHC in time and without any significant global increase in CERN’s budget. Nevertheless with a new organisation and several committees and working groups, activity on a European scale is still going on. This paper describes the actual situation and some European ideas in the different areas which may turn out to be very relevant in the future. © 2004 American Institute of Physics
AIP Conference Proceedings. 10/2004; 721(1):48-59.
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ABSTRACT: This paper reports on recent results regarding the optimization of the
transmission in a muon production channel based on quadrupole focusing
technique.
09/2004; 721:338-341.
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S Machida,
R Barlow,
J S Berg,
N Bliss,
R K Buckley,
J A Clarke,
M K Craddock,
R D 'arcy,
R Edgecock,
J Garland, [......],
S L Sheehy,
B Shepherd,
R Smith,
S L Smith,
D Trbojevic,
S Tzenov,
A Wheelhouse,
P H Williams,
A Wolski,
T Yokoi
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ABSTRACT: Properties of acceptance and beam transmission in a triangle design of the neutrino factory muon decay ring, with decay straights based on solenoidal focusing, are reported.
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ABSTRACT: Muon decay rings are under study as part of an International Scoping Study (ISS) for a future Neutrino Factory. Both isosceles triangle and racetrack, shaped rings are being considered for a 20 GeV muon energy, but with upgrade potentials of 40 or 50 GeV. Both rings are designed with long straights to optimize directional muon decay. The neutrinos from muon decay pass to one or two distant detectors; the racetrack ring has one very long production straight aligned with one detector while the triangular ring has two straights which can be aligned with two detectors. Decay ring specifications and lattice studies are the primary topic of this paper. Injection, collimation, and the RF system are covered in a second contribution to these proceedings
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ABSTRACT: Muon decay ring design, shielding, and compatibility with potential neutrino detector sites are a critical part of the International Scoping Study (ISS) for a Neutrino Factory. Two rings are under development: a racetrack and an isosceles-triangle ring initially for a muon energy of 20 GeV, but upgradable to 40 or 50 GeV. Neutrinos from the muon decays in specially designed production straights can be directed to one or two distant detectors. The racetrack ring has one very long production straight aligned with one detector, while the triangular ring has two shorter straights aligned with two detectors. An initial site survey of accelerator laboratories and distant detectors has been made, along with the required tilt angles for the planes of the rings.. Injection, collimation, and RF system design are covered in this paper. (Lattice studies are covered in a separate contribution to these proceedings.) Heating and activation effects of beam loss in the chamber walls and components will also be presented.
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ABSTRACT: Ray-tracing based methods for 3-D modeling of magnetic field and particle motion in spiral scaling FFAG accelerators have been developed. They allow efficient simulation of particle motion in presence of the strong field non-linearities proper to FFAG magnets, and of possible field overlapping in configurations of neighboring magnets, thus yielding a performing tool for spiral FFAG lattice design and optimizations, and for 6-D tracking studies. It is applied for illustration to a principle design of a 200 MeV medical class proton FFAG now under study in the frame of the RACCAM hadrontherapy project.
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ABSTRACT: This paper describes the setting up of ray-tracing tools and premilinary beam dynamics studies concerning the electron model 3-5.4463 MeV of a non-linear, non-scaling proton driver FFAG 3-10 GeV.
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ABSTRACT: This paper describes the setting up of ray-tracing tools, and preliminary beam dynamics studies concerning the NuFact bowtie decay ring.
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ABSTRACT: The RACCAM project (Recherche en ACCelerateurs et Applications Medicales) has recently obtained fundings, extending over three years (2006-2008), from the French National Research Agency (ANR). RACCAM is a tripartite collaboration, involving (i) the CNRS Laboratory IN2P3/LPSC, (ii) the French magnet industrial SIGMAPHI, and (iii) the nuclear medecine Departement of Grenoble Hospital. The project concerns fixed field alternating gradient accelerator (FFAG) research on the one hand, and on the other hand their application as hadrontherapy and biology research machines. RACCAM's goal is three-fold, (i) participate to the on-going international collaborations in the field of FFAGs and recent concepts of "non-scaling" FFAGs, with frames for instance, the Neutrino Factory (NuFact) and the EMMA project of an electron model of a muon FFAG accelerator, (ii) design, build and experiment a prototype of an FFAG magnet proper to fulfil the requirements of rapid cycling acceleration, (iii) develop the concepts, and show the feasibility, of the application of such FFAG beams to hadrontherapy and to biology research.
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ABSTRACT: High repetition rate of the FFAG accelerator and compactness of the spiral type of the design makes it a good candidate as medical machine for protontherapy and biological research. The variable energy extraction with various methods is discussed. The principle of the lattice design together with injection scheme and the beam dynamics simulations are presented. The spiral magnet design undertaken in the frame of the RACCAM project is briefly described.
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ABSTRACT: A geometrical method for 3-D modeling of the magnetic field in scaling and non-scaling FFAG magnets has been installed in the ray-tracing code Zgoubi. The method in particular allows a good simulation of transverse non-linearities, of field fall-offs and possible merging fields in configurations of neighboring magnets, while using realistic models of magnetic fields. That yields an efficient tool for FFAG lattice design and optimizations, and for 6-D tracking studies. It is applied for illustration to the simulation of an acceleration cycle in a 150 MeV radial sector proton FFAG.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
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ABSTRACT: Two designs considered by the International Scoping Study (ISS) for the final stage of the neutrino factory are the triangle and bow-tie muon decay rings. Unlike the racetrack design, these geometries enable two detectors to be targeted from one storage ring. A beam dynamics study of both rings is carried out using the Zgoubi tracking code. In particular the operating point in tune space is optimised. Results of muon spin tracking are presented.
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Neutrino Factory,
Neutrino Factory Collaboration,
M Apollonio,
JS Berg,
A Blondel,
A. Bogacz,
S. Brooks,
J E Campagne,
D Caspar,
C. Cavata, [......],
C Rossi,
T Rovelli,
R Sandström,
R Sevior,
P Sievers,
N. Simos,
Y. Torun,
M Vretenar,
K Yoshimuray,
MS Zisman
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ABSTRACT: This document summarizes the work of the Accelerator Working Group (AWG) of the International Scoping Study (ISS) of a Future Neutrino Factory and Superbeam Facility. The main goal of the activity was to reach consensus on a baseline design for a Neutrino Factory complex, including proton driver parameters, choice of target, front-end design, acceleration system design, and decay ring geometry. Another goal was to explore the commonality, if any, between the proton driver for a Neutrino Factory and those for a Superbeam or Beta Beam facility. In general, the requirements for either of the latter facilities are less stringent than those for a Neutrino Factory. Here, we discuss concepts, parameters, and expected performance of the required subsystems for our chosen baseline design of a Neutrino Factory. We also give an indication of the main R&D tasks -- many of which are already under way -- that must be carried out to finalize facility design approaches.
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ABSTRACT: The design, fabrication and measurement of a prototype magnet is part of the RACCAM ANR medical FFAG project. This magnet prototyping work, started in early 2006, is being performed in collaboration between the IN2P3/LPSC laboratory team and the magnet engineering firm SIGMAPHI. Magnetic computations and parameters of the magnet prototype will be presented in this paper.
Nuclear Instruments and Methods in Physics Research Section A: Accelerators, Spectrometers, Detectors and Associated Equipment.
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ABSTRACT: The EMMA (Electron Model for Many Applications) FFAG experiment at Daresbury will involve on-line modelling (a ¿Virtual EMMA¿) based on stepwise ray-tracing methods. Various aspects of the code of concern and of its interfacing to real world - machine and users - are addressed.
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T R Edgecock,
C.D. Beard,
J A Clarke,
S A Griffiths,
C Hill,
S P Jamison,
J.K. Jones,
A Kalinin,
K B Marinov,
N Marks, [......],
C. Johnstone,
Y Giboudot,
E Keil,
D J Kelliher,
S Machida,
SR Koscielniak, F. Méot,
J Pasternak,
S L Sheehy,
T Yokoi
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ABSTRACT: The Electron Model for Many Applications (EMMA) will be the World's first non-scaling FFAG and is under construction at the STFC Daresbury Laboratory in the UK. Construction is due for completion in March 2010 and will be followed by commissioning with beam and a detailed experimental programme to study the functioning of this type of accelerator. This paper will give an overview of the motivation for the project and describe the EMMA design and hardware. The first results from commissioning will be presented in a separate paper.
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R Barlow,
J Berg,
C Beard,
N Bliss,
J Clarke,
M Craddock,
J Crisp,
R Edgecock,
Y Giboudot,
P Goudket, [......],
Y Rao,
Y Saveliev,
S Sheehy,
B Shepherd,
R Smith,
S Smith,
S Tzenov,
A Wheelhouse,
C White,
T Yokoi
