Short manual on how to use the field conversion code "MWStudio_To_TRACK" on this page: http://www.phy.anl.gov/atlas/TRACK/Trackv39/Windows/Field-Conversion/MWStudio_To_TRACK/ I recommed that you use the full geometry in MW-Studio, not 1/2, 1/4 or 1/8 assuming symmetry. The lines in the input file "mwstudio_to_track.dat" are as follows: (There is a short description in front of the input value on the same line) line-1: Name of the electric field file to read = MW-Studio output file name line-2: Name of the magnetic field file to read = MW-Studio output file name line-3: Input Field symmetry keys in X, Y & Z. This is in case the field files were generated using given symmetries in MW-Studio otherwise set them to 0,0,0. The possible values are 0: No symmetry for this direction 1: Odd symmetry for the Electric field in this direction (u=x,y,z): E(-u) = -E(u) and B(-u) = B(u). 2: Even symmetry for the Electric field in this direction (u=x,y,z): E(-u) = E(u) and B(-u) = -B(u). But you better calculate the full geometry with MW-Studio and use 0,0,0 to avoid confusion. line-4: Track Field file number: 1,2,... This is the extension or the number "nn" of the output file eh_MWS.#nn = TRACK input. line-5: Track Field file format: 0, 1 or 2. Now we have only the binary format available, that is 0. We'll add other formats later. line-6: Track Field symmetry keys in X, Y & Z. If the geometry is symmetric we can take advantage of that to have a finer field grid in TRACK. But you better use 0,0,0 to avoid confusion. line-7: Element/Field frequency in Hz. This is the design frequency used only to check the consistency of the field components by verifying Maxwell equations, see log file. line-8: Element/Field length in cm. This is the field length in cm to consider in the output file. This allows some flexibility to adjust the element length in TRACK. line-9: Element/Field aperture in cm. This is the field aperture in cm to consider in the output file. This allows some flexibility to adjust the element aperture in TRACK. line-10: Electric field normalization for Emax=E0. This is a scaling factor to normalize the max E field to the maximum value E0 the cavity could deliver. There is also the possibility to set the field strength in the "cav" input line in the "sclinac.dat" file when runing TRACK. Note the same factor applies to B field. line-11: Unit distance scaling factor to cm. This is to scale the coordinates in the input files from whatever units they are in to "cm", which the standard unit for distance in TRACK. Please let me know if there is a problem with the code, or if you run into trouble when using symmetries for the input or output field files. This Example: An RF cavity field file calculated with MW-Studio assuming some symmetries.