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4 results on '"J. B. Lagrange"'

1. Neutrino factory

Author

M. Bogomilov, R. Matev, R. Tsenov, M. Dracos, M. Bonesini, V. Palladino, L. Tortora, Y. Mori, T. Planche, J. B. Lagrange, Y. Kuno, E. Benedetto, I. Efthymiopoulos, R. Garoby, S. Gilardoini, M. Martini, E. Wildner, G. Prior, A. Blondel, Y. Karadzhow, M. Ellis, P. Kyberd, R. Bayes, A. Laing, F. J. P. Soler, A. Alekou, M. Apollonio, M. Aslaninejad, C. Bontoiu, L. J. Jenner, A. Kurup, K. Long, J. Pasternak, A. Zarrebini, J. Poslimski, V. Blackmore, J. Cobb, C. Tunnell, C. Andreopoulos, J. R. J. Bennett, S. Brooks, O. Caretta, T. Davenne, C. Densham, T. R. Edgecock, M. Fitton, D. Kelliher, P. Loveridge, A. McFarland, S. Machida, C. Prior, G. Rees, C. Rogers, M. Rooney, J. Thomason, D. Wilcox, C. Booth, G. Skoro, J. J. Back, P. Harrison, J. S. Berg, R. Fernow, J. C. Gallardo, R. Gupta, H. Kirk, N. Simos, D. Stratakis, N. Souchlas, H. Witte, A. Bross, S. Geer, C. Johnstone, N. Makhov, D. Neuffer, M. Popovic, J. Strait, S. Striganov, J. G. Morfín, R. Wands, P. Snopok, S. A. Bagacz, V. Morozov, Y. Roblin, D. Cline, X. Ding, C. Bromberg, T. Hart, R. J. Abrams, C. M. Ankenbrandt, K. B. Beard, M. A. C. Cummings, G. Flanagan, R. P. Johnson, T. J. Roberts, C. Y. Yoshikawa, V. B. Graves, K. T. McDonald, L. Coney, and G. Hanson

Subjects
Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

The properties of the neutrino provide a unique window on physics beyond that described by the standard model. The study of subleading effects in neutrino oscillations, and the race to discover CP-invariance violation in the lepton sector, has begun with the recent discovery that θ_{13}>0. The measured value of θ_{13} is large, emphasizing the need for a facility at which the systematic uncertainties can be reduced to the percent level. The neutrino factory, in which intense neutrino beams are produced from the decay of muons, has been shown to outperform all realistic alternatives and to be capable of making measurements of the requisite precision. Its unique discovery potential arises from the fact that only at the neutrino factory is it practical to produce high-energy electron (anti)neutrino beams of the required intensity. This paper presents the conceptual design of the neutrino factory accelerator facility developed by the European Commission Framework Programme 7 EUROν Design Study consortium. EUROν coordinated the European contributions to the International Design Study for the Neutrino Factory (the IDS-NF) collaboration. The EUROν baseline accelerator facility will provide 10^{21} muon decays per year from 12.6 GeV stored muon beams serving a single neutrino detector situated at a source-detector distance of between 1 500 km and 2 500 km. A suite of near detectors will allow definitive neutrino-scattering experiments to be performed.

Published
2014
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2. First particle-by-particle measurement of emittance in the Muon Ionization Cooling Experiment

Author

MICE Collaboration, D. Adams, D. Adey, R. Asfandiyarov, G. Barber, A. de Bari, R. Bayes, V. Bayliss, R. Bertoni, V. Blackmore, A. Blondel, J. Boehm, M. Bogomilov, M. Bonesini, C. N. Booth, D. Bowring, S. Boyd, T. W. Bradshaw, A. D. Bross, C. Brown, G. Charnley, G. T. Chatzitheodoridis, F. Chignoli, M. Chung, D. Cline, J. H. Cobb, D. Colling, N. Collomb, P. Cooke, M. Courthold, L. M. Cremaldi, A. DeMello, A. J. Dick, A. Dobbs, P. Dornan, F. Drielsma, K. Dumbell, M. Ellis, F. Filthaut, P. Franchini, B. Freemire, A. Gallagher, R. Gamet, R. B. S. Gardener, S. Gourlay, A. Grant, J. R. Greis, S. Griffiths, P. Hanlet, G. G. Hanson, T. Hartnett, C. Heidt, P. Hodgson, C. Hunt, S. Ishimoto, D. Jokovic, P. B. Jurj, D. M. Kaplan, Y. Karadzhov, A. Klier, Y. Kuno, A. Kurup, P. Kyberd, J-B. Lagrange, J. Langlands, W. Lau, D. Li, Z. Li, A. Liu, K. Long, T. Lord, C. Macwaters, D. Maletic, B. Martlew, J. Martyniak, R. Mazza, S. Middleton, T. A. Mohayai, A. Moss, A. Muir, I. Mullacrane, J. J. Nebrensky, D. Neuffer, A. Nichols, J. C. Nugent, A. Oates, D. Orestano, E. Overton, P. Owens, V. Palladino, M. Palmer, J. Pasternak, V. Pec, C. Pidcott, M. Popovic, R. Preece, S. Prestemon, D. Rajaram, S. Ricciardi, M. Robinson, C. Rogers, K. Ronald, P. Rubinov, H. Sakamoto, D. A. Sanders, A. Sato, M. Savic, P. Snopok, P. J. Smith, F. J. P. Soler, Y. Song, T. Stanley, G. Stokes, V. Suezaki, D. J. Summers, C. K. Sung, J. Tang, J. Tarrant, I. Taylor, L. Tortora, Y. Torun, R. Tsenov, M. Tucker, M. A. Uchida, S. Virostek, G. Vankova-Kirilova, P. Warburton, S. Wilbur, A. Wilson, H. Witte, C. White, C. G. Whyte, X. Yang, A. R. Young, and M. Zisman

Subjects
Astrophysics, QB460-466, Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Abstract The Muon Ionization Cooling Experiment (MICE) collaboration seeks to demonstrate the feasibility of ionization cooling, the technique by which it is proposed to cool the muon beam at a future neutrino factory or muon collider. The emittance is measured from an ensemble of muons assembled from those that pass through the experiment. A pure muon ensemble is selected using a particle-identification system that can reject efficiently both pions and electrons. The position and momentum of each muon are measured using a high-precision scintillating-fibre tracker in a 4 T solenoidal magnetic field. This paper presents the techniques used to reconstruct the phase-space distributions in the upstream tracking detector and reports the first particle-by-particle measurement of the emittance of the MICE Muon Beam as a function of muon-beam momentum.

Published
2019
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3. Optics design of vertical excursion fixed-field alternating gradient accelerators

Author

S. Machida, D. J. Kelliher, J-B. Lagrange, and C. T. Rogers

Subjects
Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Vertical excursion fixed-field alternating gradient accelerators can be designed with tunes that are invariant with respect to momentum and trajectories that are scaled images of each other displaced only in the vertical direction. This is possible using guiding fields that have a vertical exponential increase, with a skew quadrupole component in the magnet body and a solenoid component at the magnet ends. Numerical analysis was used in optimization due to the coupling effects on orbits and optics. In this paper, idealized magnetic fields are calculated from first principles, taking into account end fields. The parameter dependence of the optics and the dynamic aperture of the ring are calculated for the example of a ring with an approximately 25 m circumference that accelerates proton beams from 3 MeV to 12 MeV. The paper reports for the first time the design of such an accelerator lattice using tools specifically devised to analyze transverse coupled optics without the need for approximations.

Published
2021
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4. Lattice design and expected performance of the Muon Ionization Cooling Experiment demonstration of ionization cooling

Author

M. Bogomilov, R. Tsenov, G. Vankova-Kirilova, Y. Song, J. Tang, Z. Li, R. Bertoni, M. Bonesini, F. Chignoli, R. Mazza, V. Palladino, A. de Bari, G. Cecchet, D. Orestano, L. Tortora, Y. Kuno, S. Ishimoto, F. Filthaut, D. Jokovic, D. Maletic, M. Savic, O. M. Hansen, S. Ramberger, M. Vretenar, R. Asfandiyarov, A. Blondel, F. Drielsma, Y. Karadzhov, G. Charnley, N. Collomb, K. Dumbell, A. Gallagher, A. Grant, S. Griffiths, T. Hartnett, B. Martlew, A. Moss, A. Muir, I. Mullacrane, A. Oates, P. Owens, G. Stokes, P. Warburton, C. White, D. Adams, R. J. Anderson, P. Barclay, V. Bayliss, J. Boehm, T. W. Bradshaw, M. Courthold, V. Francis, L. Fry, T. Hayler, M. Hills, A. Lintern, C. Macwaters, A. Nichols, R. Preece, S. Ricciardi, C. Rogers, T. Stanley, J. Tarrant, M. Tucker, A. Wilson, S. Watson, R. Bayes, J. C. Nugent, F. J. P. Soler, R. Gamet, G. Barber, V. J. Blackmore, D. Colling, A. Dobbs, P. Dornan, C. Hunt, A. Kurup, J.-B. Lagrange, K. Long, J. Martyniak, S. Middleton, J. Pasternak, M. A. Uchida, J. H. Cobb, W. Lau, C. N. Booth, P. Hodgson, J. Langlands, E. Overton, M. Robinson, P. J. Smith, S. Wilbur, A. J. Dick, K. Ronald, C. G. Whyte, A. R. Young, S. Boyd, P. Franchini, J. R. Greis, C. Pidcott, I. Taylor, R. B. S. Gardener, P. Kyberd, J. J. Nebrensky, M. Palmer, H. Witte, A. D. Bross, D. Bowring, A. Liu, D. Neuffer, M. Popovic, P. Rubinov, A. DeMello, S. Gourlay, D. Li, S. Prestemon, S. Virostek, B. Freemire, P. Hanlet, D. M. Kaplan, T. A. Mohayai, D. Rajaram, P. Snopok, V. Suezaki, Y. Torun, Y. Onel, L. M. Cremaldi, D. A. Sanders, D. J. Summers, G. G. Hanson, and C. Heidt

Subjects
Nuclear and particle physics. Atomic energy. Radioactivity, QC770-798
Abstract

Muon beams of low emittance provide the basis for the intense, well-characterized neutrino beams necessary to elucidate the physics of flavor at a neutrino factory and to provide lepton-antilepton collisions at energies of up to several TeV at a muon collider. The international Muon Ionization Cooling Experiment (MICE) aims to demonstrate ionization cooling, the technique by which it is proposed to reduce the phase-space volume occupied by the muon beam at such facilities. In an ionization-cooling channel, the muon beam passes through a material in which it loses energy. The energy lost is then replaced using rf cavities. The combined effect of energy loss and reacceleration is to reduce the transverse emittance of the beam (transverse cooling). A major revision of the scope of the project was carried out over the summer of 2014. The revised experiment can deliver a demonstration of ionization cooling. The design of the cooling demonstration experiment will be described together with its predicted cooling performance.

Published
2017
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