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Re: [Opal] Elegant to OPAL example files?


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  • From: "Taubert, Sebastian" <taubert AT uni-mainz.de>
  • To: "Adelmann Andreas (PSI)" <andreas.adelmann AT psi.ch>
  • Cc: "opal AT lists.psi.ch" <opal AT lists.psi.ch>
  • Subject: Re: [Opal] Elegant to OPAL example files?
  • Date: Thu, 22 Oct 2020 12:34:56 +0000
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Hello Andreas,


Of course. It is a not-so-complicated arc consisting of four 45 degree dipoles and quadrupoles in between.


This morning we may found one/the issue. I was using a particle distribution which is created by elegant at the beginning of the simulation. Since we are also using a certain twiss parameter configuration, I thought that elegant would create the particle distribution including the changed twiss parameters. But , as it seems, it does create the particle distribution and then applies the twiss parameters in its simulation. Which means that I did not use the twiss parameters for opal, when I just used the particle distribution from file. By the way, is there a way to include Twiss parameters in the distribution command?


Sorry, if all of this is somehow confusing. To me, it is super confusing. I attached two RMS Beamsize plots. One of the elegant simulation and one that I did with my simulation. 


Thanks for your help.


Cheers

Sebastian


Doctoral Student

Accelerator Physics

Institut für Kernphysik
Johannes Gutenberg-Universität Mainz
Johann-Joachim-Becher-Weg 45
D - 55128 Mainz


E-Mail: sthomas AT uni-mainz.de
Office: Due to Covid-19, temporarily not in office
Mobile: +49 1515 0535622


From: Adelmann Andreas (PSI) <andreas.adelmann AT psi.ch>
Sent: 21 October 2020 17:21:18
To: Taubert, Sebastian
Cc: opal AT lists.psi.ch
Subject: Re: [Opal] Elegant to OPAL example files?
 
Hello Sebastian it would be very helpful if you could be more 
specific: 

- describe the Elegant lattice 
- what are the initial conditions 
- what are the results you obtain (plot)


Cheers A
------
Dr. sc. math. Andreas (Andy) Adelmann
Head a.i. Labor for Scientific Computing and Modelling 
Paul Scherrer Institut OHSA/ CH-5232 Villigen PSI
Phone Office: xx41 56 310 42 33 Fax: xx41 56 310 31 91
Zoom ID: 470-582-4086 Password: AdA
-------------------------------------------------------
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the more profound will be its consequences.
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On 21 Oct 2020, at 16:09, Taubert, Sebastian <taubert AT uni-mainz.de> wrote:

Hi everyone,

I still have the problem to translate our elegant files to OPAL files. The results just do not match, despite following every example on the wiki. Some of you already gave me tons of advice (thanks a lot!), unfortunately though, the problem still persists.

Is there someone who already did translate elegant input to opal input and can provide me with the files (elegant lattice and corresponding opal lattice) so I can try to understand what you might have done differently? It can be as simple as a drift or a FODO cell. I just need to find that "thing" (whatever it is) that messes up my lattice files. 

Thanks in advance!

Best Regards
Sebastian

Doctoral Student
Accelerator Physics

Institut für Kernphysik
Johannes Gutenberg-Universität Mainz
Johann-Joachim-Becher-Weg 45
D - 55128 Mainz

E-Mail: sthomas AT uni-mainz.de
Office: Due to Covid-19, temporarily not in office
Mobile: +49 1515 0535622

Attachment: Enveloppe_Injection_elegant.pdf
Description: Enveloppe_Injection_elegant.pdf

Attachment: RMSBeamsize_Injection_OPAL.pdf
Description: RMSBeamsize_Injection_OPAL.pdf




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