Elegant users forum

Dear All, This is Chao. Recently, I am looking back to the transient beam loading simulation with rfmode element in elegant. What I am trying to do is simulate a double rf system, where the main cavity is ideal (RFCA) and the harmonic cavity is rfmode element. With the setting in the attached file, ...

Chao, The coupled trajectory correction requires that only HMON and VMON elements are present in the beamline, so I converted your lattice. The attached files work for trajectory correction, but the tune correction isn't stable. Is this a ring that is strongly coupled, or a transport line? The coup...

Hi Michael, Recently, I am trying to evaluate the influence from random errors in our pertra4 lattice. The purpose of this study is to select lattices, with errors, which can insure beta-beating within 5%, coupling factor within 10%, and further used these selected lattices for DA and LMA tracking. ...

Dear all, Would like to learn more about the algorithm used currently in the &correct &end command. &correct mode = orbit, method = global, keep_largest_SVs[0] = 2*100, &end In the command list, I noticed there is a parameter keep_largest_SVs. Then I think this command specify the correcting scheme ...

Hi

Can the &correct &end command handle the coupling correction at this moment?

yours Chao

Dear all,

I am trying to rebuild the nonlinear one turn-map from tracking. The attached is the script I am using.
Could please someone help me to confirm if I did it correct or not?

yours Chao

It is all right. In stead of import *.paramer, file， the problem can be fixed with save_lattice command.

cheers Chao

Hi, I am trying to get the non-linear one turn from from tracking. The script I am following is from elegant examples "ILMatrixFromTracking/" The attached files are what I am using right now. In current stage, only two steps are included. step 1, with the Basic.ele, the required chromaticity (5,5) i...

Hi Michael Yes, I understand the reason to develop the pseudo-multi-bunch mode. If I understand it correctly, in this pseudo-multi-bunch mode, elegant tracking one bunch M times in one turn instead of tracking M bunches one by one per turn, is it? Then in this case, the bunch-by-bunch beam induced v...

Hi Michael,

I am trying to do the simulation with the script you send to Yong-Chul.

Could you explain a little bit about the the difference between simulation with
"pseudo-multi bunch mode"?

why this "pseudo-multi bunch mode" can represent the bunch-by-bunch tracking?

yours Chao