The Opera/Tosca software set has long been used for magnet modeling at accelerator labs.  Three years ago the vendor released a new pre-processor which allowed models with unlimited detail (node count). CASA needs dipole multipoles (error terms) as input to accelerator modeling for 12 GeV.  Jay Benesch and Nicolas Ruiz undertook in FY08 to determine whether Opera/Tosca could fulfill these needs and the accuracy of the calculations.  The results of this investigation will be presented, including comparison with 6 GeV magnet measurements and possible implications for the 12 GeV project.   The multipoles produced by this effort were used in the accelerator models presented at the CD-3 review.  Specific topics to be covered: software, 3m arc dipole, J(BdL) plots, computation of multipoles, 4m arc dipole with synchrotron radiation bucking coils, multipoles as a function of field, and crosstalk in the banana magnets.

Friday, November 7, 2008

1:30 p.m.

CEBAF Center, Auditorium

Talk Slides: (Slides)


For more information, please contact Dr. Alex Bogacz or Anne-Marie Valente.