Results not matching with MAD

[amal]

Hello,


I am computing R56 for a transfer line using Elegant (without CSR) and the result obtained is -0.539m for a particular optics. For same optics MAD8 provides R56=0.30m. Sign is anyway different due to MAD conventions (-ct). The electron beam energy is 300MeV, so beta (relativistic) can not bring such change. MAD results are matched with MATLAB AT toolbox (and roughly with hand calculations). I am not able to detect, what is going wrong? I am looking the R56 from Elegant in the .fin file. For reference, I am attaching the .lte and .ele files here.


Thanks and regards,
Amalendu Sharma.

[michael_borland]

Amalendu,

The dispersion and beta functions appear to be mismatched in your system (see attached). I'd guess there is a problem with translation of the quadrupole settings or perhaps the FINT/HGAP parameters on the dipoles. An element-by-element comparison of the twiss parameters may help resolve this.

--Michael

[amal]

Thanks Michael!!!

In conversion from MAD to Elegant, the edge effects were not converted correctly by me in file for rectangular bends.... Now results are matching....

Regards,
Amalendu.