CEA Codes forum

Is there a way to adjust the parameters of a dipole/bend magnet to match the twiss parameter value I want (without changing the length of my dipole/bend magnet)?

Why is there a loss of particles when only the length of a drift segment is missing in the middle? Moreover, it can't be seen from the figure that the main particle beam cluster is lost, and the radius of my drift segment is large enough. Why is there still a small amount of particle loss?

Dear writer,

I still don't know how to upgrade my version but when i use other's examples , it dosn't appear this problem i don't know why?

regards
hanxj

how to solve this problem

Dear author, I have a question, which is what algorithm is used to generate the data behind a multipole field map? Or what is the algorithm of the field map generated by the data? Thank you. I really don't understand the instructions. regards, hanxj

I'm sorry, I didn't upload it

Dear Abhishek, Thanks for your reply,I tried to ninvert the sign of the field before, but I could only change the symmetry of the magnetic field in the Y-axis direction, and could not change the magnetic field direction in the X-axis direction in the case. A data case of multipole iron derivation is...

Dear comunian, Thanks for your reply,I tried. I can flip the particle coordinates but, the magnetic field map can't flip. That doesn't match my idea . Best Regards, Hanxj

Dear Didier, Sorry, I didn't make the previous problem clear. The content of my file with suffix bsx is the same as that of bsy. My main question is about how to match or reverse the X-axis data in the field map with the Y-axis data. I tried to keep it consistent before, but it was not possible, so ...

How can the data distribution in the X direction and the data distribution in the Y direction be reversed? Like a field diagram of a multipole .thank you for answer