second beam output phase space

[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 (110.32 KiB) Viewed 1842 times

and

fi_W_Z1.jpg (76.98 KiB) Viewed 1842 times

The input ones were

in_Z.jpg (81.17 KiB) Viewed 1842 times

and

in_Z-1.jpg (77.9 KiB) Viewed 1842 times

.

Transfer line is

layout.jpg (185.99 KiB) Viewed 1842 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.

[Didier]

Dear Vyacheslav,

Very strange, please send me your project files.

Regards,

Didier

[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 (168.83 KiB) Viewed 1835 times

and

Z_1.jpg (164.58 KiB) Viewed 1835 times

Regards, Vyacheslav.

[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