Performance and calibration studies for run 403.
- CERN 18
- S403, bar with 3-layer spherical lens
- p/pi @ 7 GeV/c
- geometrical reconstruction
- delta t selection with s = 0.5 ns
- with beam direction correction
- with per-PMT Cherenkov angle correction
Using different roughness of the radiator:
Geomentrical reconstruction:
Using different sigma of the Gaussian PDF:
Time imaging:
Last week performance:Show/Hide
Geomentrical reconstruction:
Time imaging:
Lens step scan: Show/Hide
For X:
Prototype rotation scan: Show/Hide
Without per-pmt Chereckov angle correction:
With per-pmt Chereckov angle correction:
Cherenkov track resolution for beam data (black) and simulation (red):Show/Hide
20,40,60 deg data with improved fitting:
Older plots:
Cherenkov track resolution simulation without multiple scattering and ideal tracking resolution (blue):
Reconstructed Cherenkov angle (simulation):
Tracking resolution using only 20 deg data set (simulation):
Reconstruction of a single event (proton @ 20 deg @ 7 GeV/c) with different shift of charged particle direction. Shift along theta direction:
Shift along phi direction: