G2p 2254 25T
From Hall A Wiki
| HRS Momentum (MeV) | Material # | Spread (%) | # Runs | Comments | Conclusion |
| 541 | 7 | 0.22 | 2 | ||
| 582 | 7 | 0.36 | 4 | ||
| 626 | 7 | 0.59 | 3 | ||
| 673 | 7 | 0.26 | 4 | ||
| 724 | 7 | 1.95 | 4 | yield shifts from runs 3807/3908 to 3909/3910, and the x target position drifts from 0.649-0.790 | ?? |
| 778 | 8 | 0.50 | 4 | ||
| 837 | 8 | 0.13 | 5 | ||
| 900 | 8 | 0.46 | 4 | ||
| 968 | 8 | 1.01 | 3 | ||
| 1003 | 8 | 6.00 | 8 | X (Y) beam position at target shifts by ~1mm (~0.6mm) between runs 3643-3647 to 3653-3655. Beam was down for ~6hrs in between for a problem with FZ power supply | ?? |
| 1041 | 8 | 0.54 | 4 | ||
| 1078 | 8 | 0.98 | 3 | X (Y) beam position shifts by ~0.5mm (~0.5mm) for run 3634. Beam was down for 2 hours before this run for injector work. | ?? |
| 1119 | 7 | - | 1 | ||
| 1119 | 8 | 0.20 | 2 | ||
| 1159 | 7 | 0.86 | 10 | Spread is small, but beam position does drift throughout, by about ~0.5mm | ?? |
| 1203 | 7 | 0.80 | 7 | ||
| 1247 | 7 | 5.50 | 14 | For run 3602 the beam position is off after HWP change, mentioned in HALOG post 369120. It was restored for run 3603. Without 3602 the spread is 2.00%. | ?? |
| 1294 | 7 | 0.69 | 7 | Beam was down for about an hour (371033) , but the beam position seems to have come back stable. | |
| 1340 | 7 | 1.84 | 10 | Beam was down after 3579 (368959) for ~6hrs. After run 3585, the beam position was adjusted (369001). | |
| 1391 | 7 | 0.40 | 6 | ||
| 1441 | 7 | 5.68 | 9 | HALOG post 368795 mentions that 3rd arm rates have been off since Moller measurement on 3/30, post 368803 says that moving 1H01 x position from 0.0 to -3.0 drops the rate. Previous to the Moller measurement, 1H01 was set to -3/-4. The slow raster size was changed from 2cm to 1.8 in between runs 3554 and 3556. The beam position was adjusted between runs 3558 and 3560. | ?? |
| 1496 | 7 | 0.67 | 6 | ?? | |
| 1550 | 7 | 2.79 | 7 | There is an ~8hr downtime between the last two runs (3537 and 3548). During this time, MCC performed a harp scan to check the beam profile (HALOG post 368636) and restored the beam position values were restored to the settings before the Moller measurement (HALOG post 368648) | ?? |
| 1550 | 8 | 0.34 | 4 | Run 3541 is missing beam information in mysql DB. | ?? |
| 1608 | 8 | 1.69 | 10 | The spread is small, but there is a definite shape to the change in total yield and change in tgtx. There was only ~10 minutes of downtime (HALOG post 370614) between runs 3785 and 3786. | ?? |
| 1667 | 7 | 0.25 | 8 | Beam position shifts by ~1.5mm, but it doesn't seem to effect the yields. | |
| 1729 | 8 | 0.48 | 8 | Run 3778 is missing beam information in the mysql | |
| 1792 | 7 | 17.26 | 16 | There are 3 groups of runs: 1 (3495-3502), 2 (3508-3511), and 3 (3729-3732). Groups 1 and 2 were taken ~10hrs apart, and group 3 was taken 5 days later. During the first group, it was found that the beam positions were off from the nominal positions (368345), but spot++ still looked ok. Between the first and second group, a Moller measurement was done (368386 and 368399). After the Moller, the 3rd arm rate increased from 3 to 18 kHz, suggesting the beam was scraping something (368502). After the runs in group 2, but before group 3, the raster size was changed to 1.8 cm (368795). Before the last group of runs was taken, a beam position check was done to center the target (370016). | ?? |
| 1792 | 8 | 0.46 | 5 | ||
| 1859 | 8 | - | 1 | ||
| 1927 | 7 | 3.79 | 10 | Spread is small, but there is a trend in change in tgtx and yield. The tgtx position fluctuates from 2mm to 5mm. | ?? |
| 1927 | 8 | 1.95 | 15 | ||
| 1940 | 7 | 0.96 | 12 | ||
| 2072 | 7 | 11.73 | 14 | There is ~8.5 hr time gap between the two groups of runs (3686-3695 and 3705-3712). During the first grouping of runs, there was scraping seen in the 3rd arm slow raster plots, so the beam position and raster size were adjusted. The tgty position was changed by +0.5mm (369865), and the slow raster by reduced by 2mm (369870). A sweep was done on the beam position at IPM1H01X to see the effect on the third arm rate, but the left over "spot" in the 3rd arm slow raster plot doesn't go away (369890). The beam went down for Hall C tuning and RF issues (369916 and 369942). Before the last group of runs was taken, the slow raster size was changed to 1.8 cm (370024). | ?? |
| 2072 | 8 | 34.17 | 13 | The beam was down for ~2.5 hrs (368107) between runs 3464 and 3465. There isn't anything obviously wrong with run 3460, without this run the spread is ~8.1%. | ?? |
| 2228 | 7 | 2.02 | 10 | These runs were all taken before the first septum fire. | ?? |
| 2228 | 8 | 2.11 | 6 | For runs 3440-3442, the RHRS rate was low (367892). An escorted access was taken to check if the sieve slit was still in, and it turned out it was (367923 and 367929). The RHRS run went back to normal afterwards (367936). In all, there was only ~20 minutes of downtime before runs 3444-3446 were taken. | ?? |
Plots are available here
| HRS Momentum (MeV) | Material # | Spread (%) | # Runs | Comments | Conclusion |
| 541 | 7 | 0.52 | 2 | ||
| 582 | 7 | 1.40 | 3 | ||
| 626 | 7 | 0.24 | 2 | ||
| 673 | 7 | 0.10 | 3 | ||
| 724 | 7 | 4.10 | 4 | yield shifts from runs 22939/22940 to 22941/22942, and the x target position drifts from 0.641-0.825 | ?? |
| 778 | 8 | 0.90 | 4 | ?? | |
| 837 | 8 | 0.39 | 4 | ?? | |
| 900 | 8 | 0.56 | 4 | ?? | |
| 968 | 8 | - | 3 | Run 22913 is missing deadtime information in mysql. Without this run the spread is only ~0.10% | ?? |
| 1041 | 8 | 1.69 | 3 | ?? | |
| 1078 | 8 | 112.7 | 11 | Run 22672 is only ~1.5 minutes long. WIthout this run the spread is 5.16% | ?? |
| 1119 | 8 | 0.55 | 2 | ?? | |
| 1159 | 7 | 1.93 | 9 | ?? | |
| 1203 | 7 | 0.85 | 6 | ?? | |
| 1247 | 7 | 9.75 | 13 | For run 22631 the beam position is off after HWP change, mentioned in HALOG post 369120. It was restored for run 22632. Without 22631 the spread is 3.58%. | ?? |
| 1294 | 7 | 1.03 | 7 | ?? | |
| 1340 | 7 | 2.72 | 10 | Beam was down after 22607 (368959) for ~6hrs. After run 22613, the beam position was adjusted (369001). | ?? |
| 1391 | 7 | 0.95 | 6 | Run 22849 is missing deadtime info in mysql. | ?? |
| 1441 | 7 | 3.42 | 8 | HALOG post 368795 mentions that 3rd arm rates have been off since Moller measurement on 3/30, post 368803 says that moving 1H01 x position from 0.0 to -3.0 drops the rate. Previous to the Moller measurement, 1H01 was set to -3/-4. The slow raster size was changed from 2cm to 1.8 in between runs 22585 and 22587. The beam position was adjusted between runs 22589 and 22591. | ?? |
| 1496 | 7 | 1.81 | 9 | ?? | |
| 1550 | 7 | 9.37 | 8 | There is an ~8hr downtime between the last two runs (22570 and 22580). During this time, MCC performed a harp scan to check the beam profile (HALOG post 368636) and restored the beam position values were restored to the settings before the Moller measurement (HALOG post 368648) | ?? |
| 1550 | 8 | 0.57 | 4 | Run 22574 is missing beam information in mysql. | ?? |
| 1608 | 8 | 2.99 | 10 | The spread is small, but there is a definite shape to the change in total yield and change in tgtx. There was only ~10 minutes of downtime (HALOG post 370614) between runs 22808 and 22809. | ?? |
| 1667 | 7 | 1.84 | 8 | ?? | |
| 1729 | 8 | 0.90 | 7 | ?? | |
| 1792 | 7 | 12.75 | 13 | There are 3 groups of runs: 1 (22529-22536), 2 (22541-22543), and 3 (22759-22760). Groups 1 and 2 were taken ~10hrs apart, and group 3 was taken 5 days later. During the first group, it was found that the beam positions were off from the nominal positions (368345), but spot++ still looked ok. Between the first and second group, a Moller measurement was done (368386 and 368399). After the Moller, the 3rd arm rate increased from 3 to 18 kHz, suggesting the beam was scraping something (368502). After the runs in group 2, but before group 3, the raster size was changed to 1.8 cm (368795). Before the last group of runs was taken, a beam position check was done to center the target (370016). | ?? |
| 1792 | 8 | 0.67 | 5 | ?? | |
| 1859 | 8 | 36.28 | 3 | Run 22794 is < 1 minute long. Without this run, the spread is still 12.3%. | ?? |
| 1927 | 7 | 6.25 | 10 | The tgtx position fluctuates from 2mm to 5mm. The spread is larger than the corresponding runs on the LHRS. | ?? |
| 1927 | 8 | 1.89 | 14 | ?? | |
| 1940 | 7 | 1.13 | 7 | ?? | |
| 2072 | 7 | 5.51 | 14 | ?? | |
| 2072 | 8 | 6.69 | 11 | The beam was down for ~2.5 hrs (368107) between runs 22500 and 22501. | ?? |
| 2228 | 8 | 0.69 | 4 | Yields are stable, but tgtx for run 22477 is -31? | ?? |
Plots are available here
