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The ``inverse problem`` to the evaluation of magnetic fields

Description: In the design of superconducting magnet elements, such as may be required to guide and focus ions in a particle accelerator, one frequently premises some particular current distribution and then proceeds to compute the consequent magnetic field through use of the laws of Biot and Savart or of Ampere. When working in this manner one of course may need to revise frequently the postulated current distribution before arriving at a resulting magnetic field of acceptable field quality. It therefore i… more
Date: December 4, 1992
Creator: Caspi, S.; Helm, M.; Laslett, L. J. & Brady, V.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

An approach to 3D magnetic field calculation using numerical and differential algebra methods

Description: Motivated by the need for new means for specification and determination of 3D fields that are produced by electromagnetic lens elements in the region interior to coil windings and seeking to obtain techniques that will be convenient for accurate conductor placement and dynamical study of particle motion, we have conveniently gene the representation of a 2D magnetic field to 3D. We have shown that the 3 dimensioal magnetic field components of a multipole magnet in the curl-fire divergence-fire r… more
Date: July 17, 1992
Creator: Caspi, S.; Helm, M.; Laslett, L. J. & Brady, V. O.
Item Type: Refine your search to only Report
Partner: UNT Libraries Government Documents Department
open access

The use of harmonics in 3-D magnetic fields

Description: Motivated by the need for new means for specification and determination of 3-D fields that are produced by electromagnetic lens elements in the region interior to coil windings and seeking to obtain techniques that will be convenient for accurate conductor placement and dynamical study of particle motion, the authors have generalized the representation of a 2-D magnetic field to 3-D. They have shown that the 3-D magnetic field components of a multipole magnet in the curl-free divergence-free re… more
Date: September 1, 1993
Creator: Caspi, S.; Helm, M. & Laslett, L. J.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
open access

Simulation studies of space-charge-dominated beam transport in large aperture ratio quadrupoles

Description: For many cases of interest in the design of heavy-ion fusion accelerators, the maximum transportable current in a magnetic quadrupole lattice scales as ({alpha}/L){sup 2} where {alpha} is the useful dynamic aperture and L is the half-lattice period. There are many cost benefits to maximizing the usable aperture which must be balanced against unwanted effects such as possible emittance growth and particle loss from anharmonic fringe fields. We have used two independent simulation codes to model … more
Date: May 1, 1993
Creator: Fawley, W. M.; Laslett, L. J.; Celata, C. M.; Faltens, A. & Haber, I.
Item Type: Refine your search to only Article
Partner: UNT Libraries Government Documents Department
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