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Mismatch MEBT lattice
Posted: Mon 26 Feb 2024 09:50
by yngvelevinsen
Hi
After version 2.23.3.4 of TraceWin, we see a significant mismatch between MEBT and DTL, with a 50% beam loss at the entrance of DTL (partran).
Tested on Linux only. Would you be able to advise? With 2.23.3.3 and older, we see only very litlte losses, maybe 0.2% for same sections.
Re: Mismatch MEBT lattice
Posted: Mon 26 Feb 2024 10:34
by Didier
Dear Yngve,
I tried with the version 2.23.3.5 & last one 2.23.3.8 on Linux and Windows and I have no significant losses in any case. Well, I had to use my own RFQ output distribution, that's the only difference I have with your case.
- losses.png (14.24 KiB) Viewed 372 times
Regards,
Didier
Re: Mismatch MEBT lattice
Posted: Mon 26 Feb 2024 14:11
by yngvelevinsen
Hi
Thanks for coming back to me so quickly. Sorry yes, I forgot to attach the dst file. I see as well that with the generated distribution (6D ellipse) I have same behaviour as you. I also tried to check if updating the beam parameters based on the input file would change it, but I still did not see any losses. Using the attached dst file for the input beam and I get the behaviour I described originally.
Re: Mismatch MEBT lattice [SOLVED]
Posted: Mon 26 Feb 2024 16:56
by Didier
Dear Yngve,
Sorry for that, It's fixed
Regards,
Didier
Re: Mismatch MEBT lattice
Posted: Tue 27 Feb 2024 18:25
by yngvelevinsen
Thank you for the quick fix. I can confirm simulations behave as expected again.