Elegant users forum

Thanks Michael,
as you say, using sddsxref (and sddscollapse) is the key,
Ian

Hello, I am trying to create a summary file containing the results of an optimisation, containing for example the final quadrupole and sextupole values by family, final tunes, chromaticity etc. I am doing this in the following way: sddsprocess myfile.param mag.out -match=col,ElementType=K* -match=co...

Michael, I tried computing the closed orbit, and it looks fine (0 in the vertical, 1E-11 in the horizontal). This is with start_from_centroid=0 and start_from_dp_centroid=0. If I set them to 1, then the calculation fails to converge. The ring I'm using does not include an RF cavity as I am trying to...

Thanks Michael, That's exactly what I was after. However, when I load in the results, I'm seeing something I didn't expect. If I select the initial coordinates of the particles that are lost, it looks as though the beam is being displaced when it is tracked. The initial coordinates go from 0 to 10 m...

Dear all, I am trying to do some tracking to determine the dynamic aperture and frequency map of a ring with physical apertures included. This works well either using the basic &track command with a WATCH element, or with &frequency_map. However, I am also trying to work out what happens to particle...

Many thanks for the suggestions. I changed approach and converted the .h5 file from genesis directly into a binary SDDS input file for elegant (single page), and vice versa when converting the elegant output back to a genesis beamfile, skipping the unnecessary ascii stage completely. As you say, pel...

The sdds file is all on a single page unfortunately. I tried to use: sddsbreak oldfile.sdds newfile.sdds –rowlimit=1000000 but got the error message: Error for sddsbreak: Unable to lengthen page--memory allocation failure2 (SDDS_LengthenTable) Unable to read page--couldn't lengthen data page (SDDS_R...

The file is 80GB - what is the best way to send it?
thanks,
Ian

Hi, I am trying to read in a large data file for tracking in elegant (~500M particles). I have an hdf5 file that is output from genesis, which I can successfully convert into an ascii sdds file. However, when I try to convert the file into binary format using sddsconvert -binary I get an error messa...

MIchael, I have been trying to carry out jitter simulations using the LSRMDLTR element, fixing the phase of the laser with respect to the time envelope. To do this I was tracking 2 bunches, the first to act as the fiducial bunch and then apply errors to the linac for the second bunch. When I try thi...