Emittance increase in dipoles

[Vyacheslav]

Dear Didier, when I prepared the project to send it to you, I've found that picture became truely.
It is rather strange, because I deleted from the original project all ADJUST commands only.
To say true, it is the second time when I face to it. The first one was on Fri 9 Jul 2021 19:39 (Re: second beam output phase space).

Regards,
Vyacheslav

[Didier]

Vyacheslav,

Once again, without your files it is difficult to have an opinion on your case. However looking at your plots, my feeling is that the first ones were from tracking results while the last ones are from envelope calculation results (matrix).

Regards,

Didier

[Vyacheslav]

Dear Didier,

I've checked my projects one more time and two cases (pictures) corresponds to tracking mode.

Regards,
Vyacheslav

[Didier]

Dear Vyacheslav,

I'm very surprised by what you are telling me, in tracking with the space charge, I find you curves really too perfect !!

Regards,

Didier

[Vyacheslav]

Dear Didier,
In the last of my post, I mean pictures from here

Dear Didier,

I have same question about emittance growth. In my case there are no any accelerating elements as well as radiation in the line (just Quads and two bends). Yes, I took into account beam charge volume density, but I cannot understand why did 6D emittance significantly (I mean that it is not a result of computation accuracy) increase? I thought that Liouville's theorem for conservative systems must work for this line.
Fig.1.jpg
Fig.2.jpg
Fig.3.jpg
Fig.5.jpg
Can you explain what is it?

and the second to last one from this topic. Both options (pictures) corresponds to tracking mode for the one problem.
Regards,
Vyacheslav

[Didier]

Dear Vyacheslav,

That was my understanding

Regards,

Didier