| Please note that all times are approximate |
| 00:00 | Beam down, working to restore beam. |
| 00:20 | Beam restored, MCC tuning beam. |
| 00:30 | Beam tuned, MCC providing CW beam, calibrating
ion chambers. |
| 00:50 | Switching to He4 target for MCC beam
calibration. |
| 01:00 | Switching to BeO target for MCC beam calibration
instead, on advice of RC. |
| 01:05 | MCC asked to switch to the production target, RC
says not until we've got the BPM calibration done. |
| 01:10 | RC coordinated with MCC to do BPM calibration
before ion chamber calibration. Moving to empty target for HARP
scan. |
| 01:15 | Target empty, MCC starting HARP scans. |
| 01:30 | HARP scan completed, strange result for B, posted
in MCC ELOG. MCC can't see beam in beam dump viewer, no anomalous rates.
Moving to BeO for visual check. |
| 01:45 | Unrastered beam looks centered on BeO target. Did
spot++. Switching to He4 target. |
| 03:00 | One hour mysteriously vanished. Possible alien
abduction. |
| Got 1 μA. Ran Spot++ for 6x4 MCC, 2x2 raster. T1:
517 Hz, T3: 80 Hz. |
| 03:15 | Increased raster to maximum 8.7x5.8 MCC, ran a
Spot++. T1: 639 Hz, T3: 85 Hz. Doesn't look like we're hitting the
wall. |
| 03:30 | Beam calibration apparently finished. Let MCC
return to ion chamber calibration. |
| 03:35 | Kai opened JT Valve one step to keep HPH above
zero during ion chamber calibration. |
| 03:40 | Ion chamber calibrations finished. Started test
runs to check rate and target's ability to take current. |
| 04:00 | Turned off BigBite magnet at Tai's request to
check BB. |
| 04:05 | Turned BB back on. Moving to 25 μA and
production runs. |
| 04:20 | Left Dipole NMR lost lock. Current looks good,
gaussmeter says it's fine. Tried switching probes. RC recommends
continuing production. |
| 05:50 | Moved to Slanted Carbon for BigBite test
run. |
| 06:30 | Moved to 20 cm Helium target, 12 μA for test
production run. |
| 06:45 | Reduced current to 1 μA while checking on
anomalous Spot++ plot. Turns out the strange plot was due to a beam trip.
Returned to 12 μA. |
| 07:35 | Moved back to 10 cm Helium target to continue
regular production runs. |
| 08:00 | Shift ended. Turned it over to Day Shift. |
| Run | Events | Time [mins] | Current
[μA] | Deadtime [%] | Target |
Comments |
| 2707 | 151043 | 2.296 | 5 |
30.78 | BeO | spot++
run during beam recovery |
| 2708 | 210123 | 6.834 | 1 |
15.68 | 10cm He4 | spot++
run during beam recovery, raster 2x2 (6x4 MCC) |
| 2709 | 395021 | 12.133 | 1 |
18.68 | 10cm He4 | spot++
run during beam recovery, raster 3x3 (8.7x5.8 MCC (max)) |
| 2710 | 105716 | 3.449 | 5 |
19.03 | 10cm He4 | test
run at 5 μA to check target |
| 2711 | 109920 | 2.065 | 10 |
30.86 | 10cm He4 | test
run at 10 μA to check target |
| 2712 | 105692 | 3.064 | 15 |
22.31 | 10cm He4 | test
run at 15 μA to check target |
| 2713 | 119294 | 3.157 | 20 |
21.25 | 10cm He4 | test
run at 20 μA to check target |
| 2714 | 78670 | 1.684 | 25 |
23.97 | 10cm He4 | test
run at 25 μA to check target |
| 2715 | 1057213 | 30.201 | 25 |
18.30 | 10cm He4 |
production run |
| 2716 | 44324 | 1.247 | 25 |
18.24 | 10cm He4 |
production run, stopped early to include T8 |
| 2717 | 1021524 | 27.112 | 25 |
19.42 | 10cm He4 |
production run |
| 2718 | 1008477 | 26.344 | 25 |
19.47 | 10cm He4 |
production run |
| 2719 | 301429 | 18.572 | 20 |
9.65 | Slanted Carbon | test
run for Tai to troubleshoot BB wire chambers |
| 2720 | 85693 | 5.576 | 12 |
16.53 | 20cm He4 |
production run on longer target, ended early due to weird spot++
plot |
| 2721 | 62380 | 8.307 | 1 |
6.15 | 20cm He4 | test
run to check beam position |
| 2722 | 1018368 | 32.906 | 12 |
19.55 | 20cm He4 |
production run on longer target |
| 2723 | 54892 | 0.987 | 25 |
30.98 | 10cm He4 | wrong
prescales |