Phase advance in a non-periodic transport line

[Bruce Yee]

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

[Didier]

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

[Bruce Yee]

Dear Didier,

Thanks for the explanation and the advice.

Best regards,

Bruce