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Tracking with large energy spread

Posted: 05 Jun 2017, 03:47
by Shichang
When I correct the chromaticity of my lattice to +0.01,the horizontal emittance seems to grow at large rms energy spread,0.9% or 1.2% etc...It contains two identical dipoles and several quadrupoles.I doubt that whether the high order dispersion isn't fully cancelled,or any other non-linear effects.And I have two simple questions:
1)There is &chromaticity to correct chromaticity in Elegant.Could I rearrange the sextupoles strengths to minimize emittance growth through Elegant?

2)If I want to check up on my supposition,how to read higher order dispersion through the .out file?

Thanks a lot!
Jiang

Re: Tracking with large energy spread

Posted: 06 Jun 2017, 09:39
by michael_borland
Jiang,

Attached are two examples. One shows how to compute the nonlinear dispersion and beta functions. The other shows how to use tracking with parallel elegant to reduce emittance growth. I hope you can adapt these to your problem.

--Michael