CEA Codes forum

Dear Didier,
When I use the BEND element, and I want to study the effect on a beam with varying energy, do I need to calculate the bending angle for the bend for each energy assuming the field to be constant, or do I not need to change the parameters of the BEND element?

Here is an example of how I define bend,

EDGE 3.282 21385.647 50.000 1e-06 1e-06 25.4 0
BEND 5.663869 21385.647 0.000 25.400 0 ; 2.475 BARC11 RBEND
EDGE 3.282 21385.647 50.000 1e-06 1e-06 25.4 0

When I change the beam energy, I expect the beam to go sidewise in the horizontal plane because of dispersion, but I am unable to see this effect.


Thank you

With Regards
Abhishek Pathak

Dear Abhishek,

in BEND element the field is set according to beam energy defined in "Main" page. If you want to see the effect of deviation of a beam with different energies, you have 3 solutions:

• Using the error definitions

• by entering a value "δW" in the "Twiss parameter" box accessible via the "Main" page

• By entering a second beam "Go to second beam" in the "Main" paga with a different energy. Then, in the "Charts" page, select the results of the first or second beam (this is clearly the solution I'll choose).

Regards,

Didier

Dear Didier,
It works!

Thank you very much.

With Regards
Abhishek