Before the retiming propcedure, we do need to adjust relative time-offsets of T0 2nd layer segments. That means, we do need T0-PA TOF analysis before retiming, since relative offset of PA segments are already tuned in the analysis in advance. Below, the result from run e549 291-292 is developed.
Below, T0 slewing correction factors, which are determined by pi^- beam run (run 291) are tabulatted.| ROW ID | Layer 1 - L | Layer 1 - R | Layer 2 - L | Layer 2 - R | Gaussian width final (psec) | 2nd layer Offset/sigma with PA-L arm (nsec) run292 | 2nd layer Offset PA-R arm(nsec) run292 |
|---|---|---|---|---|---|---|---|
| 1 | 4.67273 | 8.22205 | 5.06437 | 6.16337 | 77.08 | 3.3899/147.1 | 3.7021/135.6 |
| 2 | 3.96951 | 6.2343 | 6.38634 | 7.70689 | 77.07 | 6.1598/151.7 | 6.4780/155.3 |
| 3 | 10.0196 | 4.25284 | 9.35646 | 2.7873 | 89.63 | 4.1048/160.8 | 4.4462/165.4 |
| 4 | 4.58467 | 5.76946 | 7.45282 | 4.70471 | 78.06 | 6.2488/162.1 | 6.5973/164.7 |
| 5 | 5.81814 | 6.51895 | 5.33613 | 6.56541 | 77.76 | 5.1505/151.8 | 5.5104/153.5 |
Run-by-run stability of the BLC tracking efficiencies per each of E549 triggers are plotted below. The stability is satisfactory, though several jumps exist - the runs and the reasons are listed as:
Terminating the dt-dx study, the resulting run-by-run plot of the BLC resolution is as shown below.
