Search found 10 matches

by wurtzw
19 May 2020, 15:43
Forum: Bugs
Topic: Issue with integer tune
Replies: 2
Views: 6956

Re: Issue with integer tune

Hi Michael,

Thank you for your help with this issue and the explenation. It was very easy for me to give the FMULT elements a non-zero length and remove a corresponding length from the drift element. I now get the correct integer tune.

Thanks again,
Ward
by wurtzw
15 May 2020, 17:46
Forum: Bugs
Topic: Issue with integer tune
Replies: 2
Views: 6956

Issue with integer tune

Hello All, I am tinkering with a simple model for the second field integrals of an insertion device. I perform two kicks using FMULT, one at each end of the the device. The model is (kick, drift, counter-kick). When I do this, I find that elegant is calculating an integer tune that is 1 integer high...
by wurtzw
31 Mar 2020, 10:23
Forum: Bugs
Topic: Version 35.0.1 writing .sdds files
Replies: 12
Views: 20349

Re: Version 35.0.1 writing .sdds files

That appears to have fixed the problem. I re-ran the simple tracking example that I had attached to the previous post and it worked. I then calculated a frequency map using Pelegant and it also worked. So, I am 2 for 2 this morning.

Thank you for your help.

Cheers,
Ward
by wurtzw
30 Mar 2020, 16:29
Forum: Bugs
Topic: Version 35.0.1 writing .sdds files
Replies: 12
Views: 20349

Re: Version 35.0.1 writing .sdds files

This should be the Pelegant version I compiled today (March 30) and linked to mpich. Below is the (truncated) startup information for Pelegant. [wurtzw@localhost ~]$ Pelegant 'Running elegant at Mon Mar 30 15:23:23 2020 This is elegant 2020.2.0, Mar 30 2020, by M. Borland, J. Calvey, M. Carla', N. C...
by wurtzw
30 Mar 2020, 15:30
Forum: Bugs
Topic: Version 35.0.1 writing .sdds files
Replies: 12
Views: 20349

Re: Version 35.0.1 writing .sdds files

Hello All, I am also seeing this issue with version 2020.02.0. I have tried both the pre-built RPMs from the APS website and also RPMs built locally on my machine using Build-AOP-RPMs script. I have attached my example files where I compare the output of elegant and Pelegant. In Pelegant, the output...
by wurtzw
04 Oct 2010, 11:27
Forum: Dynamic Aperture
Topic: Running find_aperture with an off-momentum particle
Replies: 2
Views: 16522

Re: Running find_aperture with an off-momentum particle

Thanks, Michael. That is exactly what I needed.

Cheers,
Ward
by wurtzw
21 Sep 2010, 14:10
Forum: Dynamic Aperture
Topic: Running find_aperture with an off-momentum particle
Replies: 2
Views: 16522

Running find_aperture with an off-momentum particle

Hello All,

Is it possible to run find_aperture with an off-momentum particle?

Cheers,
Ward Wurtz
by wurtzw
01 Dec 2009, 10:24
Forum: Optimization and Matching
Topic: Elegant Optimization Convergence Problems
Replies: 3
Views: 6691

Re: Elegant Optimization Convergence Problems

Hi Michael,

Thank you for the tips. I will be putting them to good use.

Cheers,
Ward
by wurtzw
30 Nov 2009, 15:03
Forum: Optimization and Matching
Topic: Elegant Optimization Convergence Problems
Replies: 3
Views: 6691

Re: Elegant Optimization Convergence Problems

Hello All, So, I seem to have solved this particular convergence issue by changing the lines tolerance = 1e-12, n_evaluations = 500, to tolerance = 1e-26, n_evaluations = 5000, in the optimization_setup command. It seems that I am allowing more evaluations before forcing the next pass by changing n_...
by wurtzw
29 Nov 2009, 11:48
Forum: Optimization and Matching
Topic: Elegant Optimization Convergence Problems
Replies: 3
Views: 6691

Elegant Optimization Convergence Problems

Hello Michael and All the Good People, Recently I have been evaluating elegant for use at the Canadian Light Source. Until now we have primarily used the DIMAD code with some limited use of AT. One major drive for evaluating elegant is the ability to import RADIA generated kickmaps into the lattice....