CEA Codes forum

Dear Didier,

Thanks for your help and support.

Regarding computing the phase advance in a non-periodic transport line, I am using the "phase advances" plots in the Windows "charts". However, I have the following questions:

1) For the ordinate, I should use Meter or Period, since it is not periodic, I guess that meter is the best option.
And to compute the corresponding phase advance between two elements is the integral of the phase advance between them. right?

2) I can only plot the phase advance for "beam" option and not for structure, why?

3) Do you have any other advice to compute the phase advance?

Best regards,

Bruce

Dear Bruce,

Have you looked at the definition of phase advances in TraveWin? chapter "Phase advance definition"
https://dacm-codes.fr/Softwares/TraceWi ... E_ADVANCES

1- What does "Period" mean? It gives the integral, and "Meter" is the integral divided by the length of the period.
2- LATTICE command is mandatory
3 - In a non-periodic transport line, add in front of your file the command "LATTICE 1 0", this'll give you the phase advance for each element, and you can add them together to estimate it for several elements. Or you could directly define "LATTICE X 0", which will calculate the phase advance integral for you.

Regards,

Didier

Dear Didier,

Thanks for the explanation and the advice.

Best regards,

Bruce