Performance compassion for different EIC DIRC designs.
- DIRC@EIC designs
- 3-layer spherical lens with saphire, r=[62,36]
- 3 mm pixels HIQ400, CE=95%
- pions and kaons @ 6 GeV/c; pi/e @ 1.2 GeV/c; phi = 0
- 0.5 tracking resolution @ 6 GeV/c, 2.2 @ 1.2 GeV/c. See track resolution scan for more.
- 100 ps time precision
- geometrical reconstruction with averaged LUT from 15M photons
- GR with per-PMT and chromatic corrections
- 20k tracks for pdf generation (per each particle species); 10k for determining separation
Design highlights:
ATHENA
- barrel radius: 964.5 mm (middle of the barbox at 90 degree)
- number of bar boxes: 16
- bar box width: 350
- bar length: 4400
- number of bars in bar box: 10
- PMT layout: 6x4
- z_IP = -600
ECCE
- barrel radius: 729.6 mm (middle of the barbox at 90 degree)
- number of bar boxes: 12
- bar box width: 350
- bar length: 4200
- number of bars in bar box: 10
- PMT layout: 6x4
- z_IP = -400
CORE
- barrel radius: 501.7 mm (middle of the barbox at 90 degree)
- number of bar boxes: 16
- bar box width: 175
- bar length: 2800
- number of bars in bar box: 5
- PMT layout: 3x4
- z_IP = 10
Performance comparison for pi/K @ 6 GeV/c, 0.5 mrad tracking resolution:
Geometrical reconstruction:
Time imaging:
Performance comparison for pi/e @ 1.2 GeV/c, 2.2 mrad tracking resolution:
Geometrical reconstruction:
Time imaging:
ATHENA (photon yield with selection & TI):
ECCE (photon yield with selection & TI):
CORE (photon yield with selection & TI):
With K/p @ 12 GeV/c:
ATHENA (photon yield with selection & TI):
ECCE (photon yield with selection & TI):
CORE (photon yield with selection & TI):
With interaction point at z = 10 mm. Show/Hide
Performance comparison for pi/K @ 6 GeV/c, 0.5 mrad tracking resolution:
Geometrical reconstruction:
Time imaging:
Performance comparison for pi/e @ 1.2 GeV/c, 2.2 mrad tracking resolution:
Geometrical reconstruction:
Time imaging:
With interaction point at z = 10 mm. With < 50 ns time cut on pdf. Show/Hide
pi/K @ 6 GeV/c with nlak lens:
Geometrical reconstruction:
Time imaging:
With interaction point at z = 10 mm. Show/Hide
ATHENA (photon yield with selection & TI):
ECCE (photon yield with selection & TI):
CORE (photon yield with selection & TI):