Re: CSRDRIFT after WIGGLER element
Posted: 16 Nov 2020, 05:24
Michael,
Thank you very much for your valuable information.
I also calculated the momentum spread (s6) without insertion of LSCDRIFT elements
with Effective length=0 m in WIGGLER elements and show the result in the attached figure.
The s6 slope between the entrance and exit of each undulator is almost constant and probably
corresponds mainly to LSC effects (CSR effects are small there), though unfortunately the s6
slope within the undulator is apparently zero in the figure.
If Elegant adds all the missing LSC as well as CSR at the end of the undulators as you said,
LSC effects are almost doubly added when LSCDRIFT elements are inserted into the WIGGLER elements.
I have understood the two s6 jumps I showed in the previous mail are due to overestimation (double-counting)
of LSC. Please let me know if my understanding is wrong.
 Norio
Thank you very much for your valuable information.
I also calculated the momentum spread (s6) without insertion of LSCDRIFT elements
with Effective length=0 m in WIGGLER elements and show the result in the attached figure.
The s6 slope between the entrance and exit of each undulator is almost constant and probably
corresponds mainly to LSC effects (CSR effects are small there), though unfortunately the s6
slope within the undulator is apparently zero in the figure.
If Elegant adds all the missing LSC as well as CSR at the end of the undulators as you said,
LSC effects are almost doubly added when LSCDRIFT elements are inserted into the WIGGLER elements.
I have understood the two s6 jumps I showed in the previous mail are due to overestimation (double-counting)
of LSC. Please let me know if my understanding is wrong.
 Norio