run 436

Performance and calibration studies for run 415 (momentum scan @ 25 degree with the shifted bar).

  • CERN 18
  • S436, bar with 3-layer spherical lens attached to the edge of the prism
  • p/pi @ 25 degree polar angle
  • geometrical reconstruction
  • delta t selection with s = 0.5 ns
  • with beam direction correction
  • with per-PMT Cherenkov angle correction

Performance for the run 436 compared to 415 (centered bar):

Geomentrical reconstruction:

Time imaging:

Per-angle plots:


Steps scan of the lens. Separation power of the time imaging as a function of lens's steps:

Rotation scan of the prototype. Separation power of the time imaging as a function of prototype rotation relative to initial one: