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second beam output phase space

Posted: Thu 8 Jul 2021 22:58
by Vyacheslav
Dear Didier,

after transfer line (no acceleration, no radiation and so on) calculation for one kind of particles with charge state Z I run calcalation for the same particle with the same parameters, but slightly different by beta (at the level about 1.5*10^{-3}) and charge state Z-1. Output particle distributions for that with Z and Z-1 are below.
fi_W_Z.jpg
fi_W_Z.jpg (110.32 KiB) Viewed 1849 times
and
fi_W_Z1.jpg
fi_W_Z1.jpg (76.98 KiB) Viewed 1849 times
The input ones were
in_Z.jpg
in_Z.jpg (81.17 KiB) Viewed 1849 times
and
in_Z-1.jpg
in_Z-1.jpg (77.9 KiB) Viewed 1849 times
.

Transfer line is
layout.jpg
layout.jpg (185.99 KiB) Viewed 1849 times
.

Why in the longitudinal phase space does a distance by phase between them is about 300 deg? Is it just for illustration?

Regards, Vyacheslav.

Re: second beam output phase space

Posted: Fri 9 Jul 2021 15:18
by Didier
Dear Vyacheslav,

Very strange, please send me your project files.

Regards,

Didier

Re: second beam output phase space

Posted: Fri 9 Jul 2021 18:39
by Vyacheslav
Dear Didier,
when preparing project files to send you, I merged a number of consequent drift elements in one and rerun calculation. Obtained results below and looks more correct. Some strange effect took place.
Z.jpg
Z.jpg (168.83 KiB) Viewed 1842 times
and
Z_1.jpg
Z_1.jpg (164.58 KiB) Viewed 1842 times
Regards, Vyacheslav.

Re: second beam output phase space

Posted: Sat 10 Jul 2021 14:24
by Didier
Dear Vyacheslav,

Ok, but the previous behaviour is not normal and if you have an example showing me how to reproduce and correct this bug, it is still interesting to do so.

Regards,

Didier