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Synchrotron radiation integrals with dipoles tilted by 90 degrees #1011

Open kandre2 opened 3 years ago

kandre2 commented 3 years ago

Hello,

I'm using TWISS with the option CHROM in a beam line with dipoles tilted by 90° so that it bends vertically. The result I obtain for the first synchrotron radiation integral is not consistent when I remove the TILT of 90° meaning the results are different if the dipoles bend vertically or horizontally.

Therefore when I use a beam line with vertical and horizontal dipoles the results of the first synchrotron radiation integral is not correct and the momentum compaction factor is not either when I compare with other codes like OPTIM. (I can reproduce the results from OPTIM when I have only dipoles bending horizontally).

There is a similar issue for the fifth synchrotron radiation integral that is not computed properly if a beam line is composed of dipoles bending vertically.

tpersson commented 3 years ago

I can confirm that synchrotron radiation integrals only take into account the horizontal dispersion and not the vertical.