LUT improvements and calibration
- GlueX commissioning data
Accumulated pattern for of pi/K at different angles => unexplained yield enhancements at the edges of PMTs.
![](/~rdzhigad/data/gluex/lut_scan/cdigi_bggen100.png)
Cause - reflections inside PMT:
![](/~rdzhigad/data/gluex/lut_scan/glueX_lut_1.png)
![](/~rdzhigad/data/gluex/lut_scan/glueX_lut_2.png)
After fix:
![](/~rdzhigad/data/gluex/lut_scan/glueX_lut_3.png)
![](/~rdzhigad/data/gluex/lut_scan/glueX_lut_4.png)
Scan of the mirror rotations for tracks which hit bar #3:
![](/~rdzhigad/data/gluex/lut_scan/glueX_lut_6.png)
For DIRC_HDDS_v4.2.xml (nominal geometry)
Mirror 1:
![](/~rdzhigad/data/gluex/lut_scan/drawScan_tt1106/scan_0.png)
Mirror 2:
![](/~rdzhigad/data/gluex/lut_scan/drawScan_tt1106/scan_1.png)
Mirror 3:
![](/~rdzhigad/data/gluex/lut_scan/drawScan_tt1106/scan_2.png)
For DIRC_HDDS.xml (DIRC spring 2019 commissioning geometry):
![](/~rdzhigad/data/gluex/lut_scan/scan_1.png)
![](/~rdzhigad/data/gluex/lut_scan/scan_2.png)
![](/~rdzhigad/data/gluex/lut_scan/scan_3.png)