Now, PDC resolution is about 150 micron for K^+ run, and slewing correction can be terminated, at least for stop K^+ run. As the result of the improvement of the tracking (nemaly, TOF distance), 1/beta resolution has been slightly improved. The top and bottom figures are 1/beta for L and R arms, respectively, from run 136 to 141.
Present problem is formulated as below:
From the configuration of devices, several PDC variables have implicit functional dependence, and this most generalized problem would be difficult to be solved. Some hints may be found by studying the 2-dimensional correlations between delta T and those variables. Those are given below, for the total of R arm.
To be done nextly (in order) ....
0. NC analysis 1 - Detector study, energy calibration and correlation between PB-defined-1/beta and PB+NT-defined-total energy for positive and negative polarity.
1. T0->PA TOF, Kaon flight time and relative offset adjustment of T0 segments.
2. Stop K selection with reaction time and inclusive proton spectrum
3. NC analysis 2 - PA->NC TOF with K^+ run
4. NC analysis 3 - Pattern recognition and 1/beta spectrum for neutral particles