Backtracking error

[smorard]

Dear Didier,

I have a project that consist of :

SPACE_CHARGE_COMP 0.9
SOL1 : FIELD_MAP 50 600 0 50 0.736784 0 0 1 MedSolb
DRIFT 382.4 50 0
DRIFT 200 50 0
END

I send an initial distribution and save the final distribution after the last drift. The transmission is 94%.

enveloppe.png (161.35 KiB) Viewed 35 times

Then I choose this saved distribution as initial distribution and check the back simulation option. After this, all particles are lost in the field map, I don't understand how this is possible. I tried the back simulation with another distribution, same happened.

enveloppe_error.png (170.31 KiB) Viewed 35 times

Transmission goes from 100% to 0% in one go.

Thanks for the help.
Sophie

[Didier]

Dear Sophie,

Please send me your project files, including the field map, otherwise it will be difficult for me to understand the problem.

Regards,

Didier

[Didier]

Dear Sophie,

The bug has been fixed.

Regards,

Didier