Plane-by-plane residual distribution. Some of them are clearly deviated from 0 by ~60 micron as easily seen. Note that 8 sequential single hits are required to perform tracking
This problem is resolved by completely same procedure used for BLC.
| Y resolution(mm) | Z resolution(mm) | Plane combination | Comment |
|---|---|---|---|
| 0.1898 | 0.2093 | - | |
| 0.1806 | 0.2090 | 0-1(1y-1y' or 1z-1z') | Selected as y standard |
| 0.2916 | 0.2093 | 0-2(1y-2y or 1z-2z) | |
| 0.2421 | 0.2092 | 0-3(1y-2y' or 1z-2z) | |
| 0.2787 | 0.2092 | 1-2(1y'-2y or 1z'-2z) | |
| 0.2298 | 0.2090 | 1-3(1y'-2y' or 1z'-2z') | |
| 0.1828 | 0.2087 | 2-3(2y-2y' or 2z-2z') | Selected as z standard |
| Y resolution(mm) | Z resolution(mm) | Plane combination | Comment |
|---|---|---|---|
| 0.1864 | 0.2206 | - | |
| 0.1862 | 0.2180 | 0-1(1y-1y' or 1z-1z') | Selected as y,z standards |
| 0.1905 | 0.2624 | 0-2(1y-2y or 1z-2z) | |
| 0.1877 | 0.2381 | 0-3(1y-2y' or 1z-2z) | |
| 0.1899 | 0.2564 | 1-2(1y'-2y or 1z'-2z) | |
| 0.1874 | 0.2334 | 1-3(1y'-2y' or 1z'-2z') | |
| 0.1863 | 0.2188 | 2-3(2y-2y' or 2z-2z') |
| stage | L-y resolution (mm) | L-z resolution (mm) | R-y resolution (mm) | R-z resolution (mm) |
|---|---|---|---|---|
| 0 | 0.18980 | 0.20930 | 0.18643 | 0.22058 |
| 1 | 0.18064 | 0.20866 | 0.18620 | 0.21798 |
| 2 | 0.18001 | 0.20862 | 0.18630 | 0.21792 |
| 3 | 0.17996 | 0.20856 | 0.18624 | 0.21786 |
| L Y shift(mm) | L Z shift(mm) | L Y shift(mm) | L Z shift(mm) | |
|---|---|---|---|---|
| 1 | 0.0 | -0.105 | 0.0 | 0.0 |
| 1-dash | 0.0 | -0.050 | 0.0 | 0.0 |
| 2 | 0.351 | 0.0 | 0.089 | 0.0571 |
| 2-dash | 0.569 | 0.0 | 0.127 | -0.045 |
Run-by-run variation of PDC resolution. dt-dy conversion function is constructed with run 69~90. Then, the resolution is NOT STABLE AT ALL, hence we do need term division. It will be performed together with PA re-timing after relative timig adjustment of the segments.
Consequently, it is iterative procedure, since PA timing adjustment is affected by PDC tracking result.
Run-by-run variation of PDC tracking efficiency. The denominator is just Kstop*charged trigger number, and events in which both of them are simultaneously tracked are rejected. Tracking condition is at least 3 available planes for both of x-y and x-z. available planes are defined as those on which only one or adjoint two wires are fired.
The fraction of L-R simultaneous tracking succeed is fairly stable at around 3.1 %.
Subjects to be done....
1. BLC relative rotation and position shift by K^+-VTC triggered (K^+ * VTC) run. -> Hanaki.
2. PDC relative rotation and position shift by K^+-(PA*PB) triggered (K^+ * charged) run. -> Hanaki.
3. Chamber tracking and single-plane efficiencies and their long-term stability. -> Some efficiencies for some dedicated purpose(or trigger pattern) would be studied after those requirements are recognized.