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pro vyhledávání: '"Dan T. Abell"'
Publikováno v:
Physical Review Accelerators and Beams, Vol 20, Iss 5, p 052002 (2017)
Simulating beam loading in radio frequency accelerating structures is critical for understanding higher-order mode effects on beam dynamics, such as beam break-up instability in energy recovery linacs. Full wave simulations of beam loading in radio f
Externí odkaz:
https://doaj.org/article/3e0e414292914564afae475aa0576ee3
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 18, Iss 2, p 024001 (2015)
Accurate spin tracking is a valuable tool for understanding spin dynamics in particle accelerators and can help improve the performance of an accelerator. In this paper, we present a detailed discussion of the integrators in the spin tracking code gp
Externí odkaz:
https://doaj.org/article/0eb6dedd218540368da080b30acab3e3
Autor:
Dan T. Abell
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 9, Iss 5, p 052001 (2006)
Modern map-based accelerator beam-dynamics codes model magnetic elements so as to include nonlinear effects and realistic fringe fields, but they persist in modeling rf cavities as either energy kicks or linear maps. This work presents a method for i
Externí odkaz:
https://doaj.org/article/ec74a1a4efab4db3836e2b644e87a361
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 6, Iss 6, p 064001 (2003)
Tracking simulations remain the essential tool for evaluating how multipolar imperfections in ring magnets restrict the domain of stable phase-space motion. In the Large Hadron Collider (LHC) at CERN, particles circulate at the injection energy, when
Externí odkaz:
https://doaj.org/article/08116996a6e84824a292453d4bfc52c6
Autor:
Dan T. Abell, Alex J. Dragt
Publikováno v:
International Journal of Computer Mathematics. 99:89-112
To a very good approximation, particularly for hadron machines, charged-particle trajectories in accelerators obey Hamiltonian mechanics. During routine storage times of eight hours or more, such particles execute some $10^{8}$ revolutions about the
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 18, Iss 2, p 024001 (2015)
Accurate spin tracking is a valuable tool for understanding spin dynamics in particle accelerators and can help improve the performance of an accelerator. In this paper, we present a detailed discussion of the integrators in the spin tracking code gp
Autor:
S. C. Moss, Dan T. Abell, David Mermin, Hector J. Sussmann, Alan D. Sokal, Jonathan Katz, Jean Bricmont
Publikováno v:
Physics Today. 52:11-122
Publikováno v:
Physical Review Special Topics. Accelerators and Beams, Vol 6, Iss 6, p 064001 (2003)
064001-1 Tracking simulations remain the essential tool for evaluating how multipolar imperfections in ring magnets restrict the domain of stable phase-space motion. In the Large Hadron Collider (LHC) at CERN, particles circulate at the injection ene
Autor:
Dan T. Abell, Alex J. Dragt
Publikováno v:
AIP Conference Proceedings.
This paper tries to make clear what limits the validity of a Taylor series map, and how. We describe the concept of a transfer map and quote some theorems that justify not only their existence but also their advantages. Then, we describe the Taylor s
Publikováno v:
Solid State Communications. 68:145-147
The growth mode of Nb on Si(111) has been studied by Auger Electron Spectroscopy. On samples cleaned by thermal annealing alone, the growth mode is layer-by-layer at room temperature, while at 300°C the Nb grows non-uniformly. The temperature depend