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| Subject | ： Re: Two question about SAD |
| Date | ： 2014/04/01(Tue) 09:40:17 |
| Contributor | ： Anonymous |
> Hello, I have two questions about SAD:
>
> 1) What is the exact definition of key word MOMENTUM?
> I guess it should be MOMENTUM=\gamma_0*m_0*v_0*c, but not \gamma_0*m_0*c^2. Say, MOMENTUM=4.0 GeV for SuperKEKB LER. Am I right?
>
MOMENTUM == First[LINE["GAMMABETA"]] * MASS == pc/e [eV]
> 2) I found the k64 branch of SAD gives different closed orbits from that of normal version in the longitudinal direction (z and delta) around the ring for sher_5764. In the SAD computers, I run:
> k64 branch: /SAD/bin/gs -k64
> normal version: /SAD/bin/gs
> What makes the differences?
>
The difference WOULD be made by source codes.
Check source by cvs diff between MAIN trunk and k16-1-6 branch.