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High-order optics of multipole magnets [electronic resource].

Published
Washington, D.C. : United States. Dept. of Defense, 1990.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description
Pages: (4 pages) : digital, PDF file
Additional Creators
Los Alamos National Laboratory, United States. Department of Defense, and United States. Department of Energy. Office of Scientific and Technical Information
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Summary
We have developed a new capability to compute third and fifth order Lie algebraic transfer maps for a family of realistic multipole magnets, including dipoles. The general Hamiltonian is expanded symbolically to arbitrary order. The vector potential off axis, for a given multipole symmetry, is determined from the appropriate magnetic field gradients and their longitudinal derivatives on axis. Subroutines to compute the required gradients are available for Halbach REC quadrupoles, and for general multipoles, with the current distribution on a cylindrical surface specified by a shape function. This function can be supplied by the user, or selected from internal options. Both the reference trajectory, and the map about it are calculated by numerical integration through the general magnetic field, using modular GENMAP software. This allows the calculation of curved reference trajectories in a general dipole magnet, as well as offset reference trajectories needed for misalignment tolerance studies. These new calculational capabilities have been added to the MARYLIE Lie Algebraic beam optics design code.
Report Numbers
E 1.99:la-ur-90-2888
E 1.99: conf-9009200--5
conf-9009200--5
la-ur-90-2888
Subject(s)
Other Subject(s)
Note
Published through SciTech Connect.
01/01/1990.
"la-ur-90-2888"
" conf-9009200--5"
"DE90016438"
1990 LINAC conference, Albuquerque, NM (USA), 10-14 Sep 1990.
Neri, F.; Mottershead, T.; Walstrom, P.
Funding Information
W-7405-ENG-36
View MARC record | catkey: 14696438