Improvements to PARMILA

Author: Sacks, R. A.
Published: United States : [publisher not identified], 1981
Springfield, Va.: National Technical Information Service, [approximately 1981]
Physical Description: microfiche : negative ; 11 x 15 cm
Additional Creators: Colton, E. P.

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Summary

PARMILA is an internationally accepted standard for Monte Carlo simulation of linac and transport line performance. We discuss several modifications and improvements to this code. A generalized magnet routine allows the simulation of electrostatic and magnetic quadrupoles, solenoids, sextupoles, and octupoles. Optional inclusion of linear fringe fields and/or geometric aberrations is provided for in the quadrupole transformation. The dipole routine has been replaced with a more accurate algorithm. The accelerating gap transformation has been replaced by a set of implicit equations which accurately describe the relativistic particle behavior in the presence of longitudinal and transverse electric fields described by a set of 6 weighted Fourier moments (transit time factors). A simple model allows these moments, in turn, to be approximated from the cell geometry and the usual T and S functions. A number of added convenience features - interactive disk storage and retrieval of particle coordinates, individual particle input and observations, an interactively callable test for particle longitudinal stability, and an automated quadrupole tuning procedure - all add to the code's versatility, convenience, and strength as a design tool.

Report Numbers

DE83008913; CONF-810314-184

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NTIS collection.

Note

DOE contract number: W-31-109-ENG-38
OSTI Identifier 6383710
Research organization: Argonne National Lab., IL (USA).

View MARC record | catkey: 47329515

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Improvements to PARMILA

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