Performance of the Barrel DIRC for bars with different imperfections.
- PandaRoot simulations
- pions and kaons @ 3.5 GeV/c
- time-imaging reconstruction with full-simulated pdfs
- 30k tracks for pdf generation (per each particle species); 5k for determining separation
- ~2 mrad tracking resolution
- 100 ps time resolution
- standard wavelength QE
- spatial QE = 1
Rectangularity shapes:
![](/~rdzhigad/data/barrel/perf_scan/rect_abc.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_zoom_tir_nph.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_wide_tir_nph.png)
Time imaging reconstruction with pdfs from imperfect bar:
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_zoom_tir_sep.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_wide_tir_sep.png)
Time imaging reconstruction with pdfs from ideal bar:
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_idealpdf_zoom_tir_sep.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_idealpdf_wide_tir_sep.png)
Projection for time imaging reconstruction with pdfs from imperfect bar:
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_proj_tir_sept.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shape_abc_tir_sep.png)
Geometrical reconstruction:
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_wide_spr.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_zoom_sep.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/mix_shapea_wide_sep.png)
Example of shape (b) with alpha = 40 mrad:
![](/~rdzhigad/data/barrel/perf_scan/rectang_40_r1.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/hAngle_35_22_27.png)
![](/~rdzhigad/data/barrel/perf_scan/shape_a/hLikelihood1_35_22_27.png)
Height variation:
![](/~rdzhigad/data/barrel/perf_scan/height_h.png)