Upgrade of the ALICE Detector - Alice - CERN

ITS Upgrade
19
Pixel technologies under study:
Hybrid pixels:
100 um sensor + 50 um ASIC
30 um x 100 um pixels
Monolithic pixels:
50 um ASIC
20 um x 20 um pixels
Requirements:
Readout time < 50 us
radiation tolerant (2 Mrad, 2 10 13 n eq )
Pointing resolution [!m]
Pointing resolution .vs. Pt
300
250
200
150
100
Low power design (250 mW/cm 2 )
50
in r - Current ITS
in z - Current ITS
in r - "All New" Conf.
in z - "All New" Conf.
Settings:
Tracked particle: Pion
Average rapidity: 0.45
"All New" Configuration:
Number of layers: 7
layer radii: r = {2.2,3.8,6.8,...} cm
layer prop.: X/X =0.3%; r,z
=4!m
0
0.2 0.3 0.4 1 2 3 4 5 6 7 8 910 20
Transverse Momentum [GeV/c]
P. Riedler/CERN
TIPP 2011 Conference