smaller EV

Performance comparison for different EV designs.

  • EIC, ePIC, hpDIRC, updated geometry (barrel's R = 766.25)
  • with B-field
  • tracks hitting middle of the bar #5
  • pi/K @ 6 GeV/c
  • 0.5 mrad tracking resolution, unless labeled otherwise
  • 3-layer spherical lens with sapphire, r=[62,36] for prism EV
  • 2x3 layout; 32x32 pixels HRPPD Incom.24, CE=70%; 100 ps time precision
  • transport efficiency based on BaBar ref. coef. measurements
  • TI with 30k PDF for each particle type.

Default:

One HRPPD row, 300 mm depth:

One HRPPD row, 200 mm depth:

Example of the hit pattern (30 deg). Default:

HP (30 deg). One HRPPD row, 300 mm depth: