The OPAL Discussion Forum

[Steve Russell <srussell AT lanl.gov>]

One other thing to note, the Enge coefficients define the magnet's 
fringe field, which are responsible for edge focusing. If you input a 
hard edge magnet, you will not get the correct edge focusing.


On 09/28/2011 07:07 AM, Andreas Adelmann wrote:
> Hi Chris,
> >  From Ch. Mayes (posted by AA )
> >
> > How crucial is it for SBEND elements in OPAL-T to have a FMAPFN that contains 
> > the Enge coefficients? As it stands, OPAL won't run without this file.
> > What I am asking, is if some things like the gap and the field integral can 
> > be specified in-line with the element definition, instead of requiring a file.
> This is currently not available in OPAL-T.
>
>
> > Also, if nothing is specified, what is wrong with having a hard-edged magnet?
> I do not know what's happen if you set the Enge coefficients to mimic a 
> hard-edge magnet,
> however I can imagine that maybe the CSR or integration routine having 
> problems.
>
> Andreas
>
>
>
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--
Steve Russell
Technical Staff Member
MS H851
P.O. Box 1663
Los Alamos National Laboratory
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USA
Phone: (505) 665-3712
Fax: (505) 667-8207



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