Elegant users forum

MIchael,
Thank you very much; I was not aware of the capability of the load-parameter. Best, -- Philippe.

MIchael,
Thank you very much for the suggestion! -- Philippe.

Hi, I have a long FODO lattice. I fit once fodo cell to find the quad strength needed for a specified phase advance and then I would like to set all the quad in the FODO lattice given the value I found for one cell. I tried to do something like this: # load the quad associated to one cell &rpn_load ...

Hi, I noticed the divide_element changes the output results in some instances (i my case when tracking a particle distribution using a previously fitted lattice). I have attached a targz file that reproduces my problem. In brief, I do some fitting and in the last pass I track an incoming distributio...

Michael, To follow up with this question about chromatic function (dbetax/dp and dalphax/dp). Would it be possible to dump these functions as a function of the distance along the beamline -- right now they are evaluated at the end of the beam line. Is there an easy way to do so without modifying ele...

Michael, Is there a way to have a special distribution in the &bunch parameter to generate particle distributed on the perimeter of an ellipse. This would enable tracking equivalent-beam ellipses to, e.g., study the impact of chromatic aberrations. Right now the only alternative I found was to gener...

Michael,
Indeed I had an old version on my laptop -- also I think there is no mention [yet ] of the dalphax/dp and dalphay/dp in the doc under the twiss output section. Thank you very much for your prompt answer. All the best, -- Philippe.

Hi,
In ELEGANT is there a way to directly get the chromatic amplitude functions (Wx, Wy)? I see only dbetax/dp and dbetay/dp in the .twi file but not dalphax/dp and dalphy/dp -- both dalpha/dp and dbeta/dp are needed to get the chromatic amplitude.
Thank you, -- Philippe.

I was wondering is there is a way to compute the statistic (e.g. rms) of one column (a variable) using another column as weight. For instance I generate some profiles I(x) versus x and want to compute <x^2> using sddsrunstat or similar. Right now I use sddsprocess generate the I(x)*x*x, I(x)*x, etc....

All,
Is there a way to "continuously" call a script a few times per elements? We would like to use an external space charge algorithm coupled with elegant via the script element. Thank you very much for any suggestion. Best, -- Philippe.