Aggregator
Scan of harp_tagger
Scan of harp_2c21
Scan of harp_2H00A
Scan of harp_2H00A
Scan of harp_2H00A
[LATE ENTRY] separation checks
FIG.4
While sending xD & xC, 2E02.XPOS indicates separation was off
Over separated for recirculating:
xC tune ~+0.6
xD slightly Under separated for recirculating:
xD CW ~-0.1
xB Over separated for extracting:
xB tune ~ +1.0
FIG.4
Did some pass 1 separator phase adjustments looking at 2E02.XPOS
Also, during separation checks, we did some slight 2T line steering for xB
Although xC & xD are still ~ +/- 0.5 from nominal E02.XPOS position, xB was still off by ~1.0, also BPM's can lie, and cross checks are always good to have...
So we decided to check the viewer
FIG.1
after the pass 1 phase
Scan of harp_2H00A
Tagger degaussed, alarm node disabled
TAGGERB has been disabled in alarm handler
QuickPic - Hall D (1.1x10-3_Al_100um) --> (JD70_55um_45/135 deg) @ 25nA
iCalibrate: Hall D
QuickPic - Tagger FSD bit is masked
"Hall B happy with beam profile; degaussing tagger"
Scan of harp_tagger
Hall B Update: Optics rapidly converging
Counting House is getting in touch with expert to see if beam profile is acceptable. Looks great at the tagger (linked) but 2C21 may be a little too wide in x (also linked).
If indeed it is too wide in x at 2C21, I'll back out of the last round of changes to matching quads and try to replicate results at 2C24 with the triplet. We were pretty close before, it shouldn't be too tricky!










