Search found 5 matches

by jgarland
25 Jun 2018, 09:36
Forum: Optimization and Matching
Topic: Optimising Phase Advance - error
Replies: 14
Views: 21693

Re: Optimising Phase Advance - error

It is a long, long lattice definition given to me by others, I think it would be hard to wade through it (for sure I'm having trouble!). In order not to waste anymore time (seeing as there isn't a quick/easy answer) I'm going to build a small example from scratch to work out the problem. I will repo...
by jgarland
25 Jun 2018, 09:21
Forum: Optimization and Matching
Topic: Optimising Phase Advance - error
Replies: 14
Views: 21693

Re: Optimising Phase Advance - error

Yes they do, they looks something like this:

E2: MARK, FITPOINT=1

Cheers,
Jimmy
by jgarland
25 Jun 2018, 08:23
Forum: Optimization and Matching
Topic: Optimising Phase Advance - error
Replies: 14
Views: 21693

Re: Optimising Phase Advance - error

Hi Michael, Yes I also tried this (as per the other thread in the forum) but it throws the same error. I am also a little bit confused as to why nux or nuy would be used in the case of a linac (in my case); surely they are relevant only for circular, or simply periodic machines where the tune can be...
by jgarland
25 Jun 2018, 07:08
Forum: Optimization and Matching
Topic: Optimising Phase Advance - error
Replies: 14
Views: 21693

Re: Optimising Phase Advance - error

Hi Neeraj,

Thanks for your reply. Yes I do, it is set to =1.
by jgarland
25 Jun 2018, 05:58
Forum: Optimization and Matching
Topic: Optimising Phase Advance - error
Replies: 14
Views: 21693

Optimising Phase Advance - error

Hi, I am quite new to Elegant, so I'm still learning. I am trying to optimise a set of quads to realise a given phase advance between two points. I use the following "optimisation_setup": &optimization_setup mode = "minimize", method = "simplex", target = 0, tolerance = 1e-12, n_passes = 2, n_evalua...