1, We agreed to have sets of orbit data of many pulses for analyzing jitters.
For damping ring, there are some files of last week:
ATF$NFS:[DATA.STRBPM.WORK]ASCII_20100216-A.DATA
ATF$NFS:[DATA.STRBPM.WORK]ASCII_20100218-A.DATA
ATF$NFS:[DATA.STRBPM.WORK]ASCII_20100219-A.DATA
ATF$NFS:[DATA.STRBPM.WORK]ASCII_20100219-B.DATA
These names can be found in atfwiki.
Echotek BPM system have problem (half dead and half strange) and probably should not be used.
In EXT and FF, Flight Simulator continuously tokes such data.
Ascii file will be prepared by M.W, with information of the beam line optics.
It is not possible to take DR BPM data by FS now. So, pulse to pulse correlation between DR and EXT cannot be studied now.
2, We had discussion about stability of multi-train beam.
FONT group observed instability last December but it is stable last week. The reason is unknown.
Bunch to bunch correlation of extracted beam (in one pulse) was less than 5 micron (?) in good condition.
(Memo after meeting: Later this week, we observed unstable multi-train beam again. Resetting DR quad and skew magnets as last week, the beam became stable.)
