23:20
JM thinks we cannot see 7Be locus on run 24. Possibly the right arm cannot get close enough.
Stopped moving right arm
Started moving left arm as previously: 32.52 mm -> 77.56 mm
Checked with bunched beam: not clipping. Possibly we could go further in - to be decided.
Started run 25
Target - 1.1E12 atoms/cm2
Beam - 1.2E7 pps
Root histograms refreshed.
Temps OK - attach
Stats OK - attach
All checks OK
Leakage OK - attach
Spectrum browser 1, 7, 8 attached
00:00
Run continues OK
Temps OK, Stats OK, Merger OK
01:15
Run continues OK
Temps OK - attached
Stats OK - attached
Merger OK
Rates OK - attached
Also attached current histograms
03:10
Motors now moving 32.77 -> 77.56 mm. Unclear why, should not affect results.
Target 1.1E12 atoms/cm2
Current 1.4E7 pps
Temps OK - attached
Rates OK - attached
All checks OK
Merger OK
03:37
7Be locus appears to be clearly visible. Attach 18
04:32
Temps OK
Rates OK
Merger OK
05:30
Temps OK
Rates - aida10 showes intermittently high rates around 10k. See attached. Seems to be linked to beam, already observed last night.
06:10
Temps OK
Rates OK - aida10 still counting 10k with beam, 300 without
Merger OK
Histograms attached
7:23- LB,PW
All checks OK, general behaviour consistent with previous observations. Beam current ~ 1E7 pps
8:40
All good, attachment 27 is the spectra. Beam current 1.3E7 pps.
9;50
All good, target very stable at 1E12 at/cm^2. Noticed also Aida01 and aida02 show same behaviour as aida10, but the maximum rate is between 1000-2000 (instead of the 10000-20000 of aida10)
Run 25 stopped 10:45, Run 26 started -> laser spectroscopy laser test |