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1 November 18, 2014 DOE SC-OPA Review of 12 GeV ENC vs. preamp load FSSR2 testing @FNAL by FNAL...
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Transcript of 1 November 18, 2014 DOE SC-OPA Review of 12 GeV ENC vs. preamp load FSSR2 testing @FNAL by FNAL...
1November 18, 2014 DOE SC-OPA Review of 12 GeV
ENC vs. preamp load
0
500
1000
1500
2000
0 5 10 15 20 25 30 35 40
without BLRwith BLR
y = 221.07 + 26.387x R= 0.9995
y = 216.22 + 33.228x R= 0.99863
EN
C [
e rm
s]
CD [pF]
tp =85 ns
FSSR2 testing @FNAL by FNALSingle chip on a PCBLoad from capacitors
SVT module testing @FNAL by JLabFour chips on a hybridBonded to sensors
Excellent noise performance
2November 18, 2014 DOE SC-OPA Review of 12 GeV
ENC History, SVT module P26, chip U1
QA after fabrication, FNALModule in the (grounded) metal boxHybrid temperature 30CPassive cooling (heat sink)
Mounted in SVT Region 1, JLabBarrel inside Faraday CageHybrid temperature 24CActive cooling (cold plate, 15C)
Reception test, JLabModule in the plastic boxHybrid temperature 32CPassive cooling (heat sink, grounded)
QA after burn-in, FNALModule in the (grounded) metal boxHybrid temperature 30CPassive cooling (heat sink)
No extra noise after installation
3November 18, 2014 DOE SC-OPA Review of 12 GeV
Module Performance after Region 1 Assembly
July 18, 2014
Example of module performance
All other 9 moduleshave similar performance With no missing channels
Sensor leakage currents below 400 nA
Hybrid temperature 24CWith coolant at 15C
All 5120 channels calibrated, only one channel missing
5November 18, 2014 DOE SC-OPA Review of 12 GeV
Region 2: Noise Performance
99.9% of channels operational
6November 18, 2014 DOE SC-OPA Review of 12 GeV
SVT commissioning with cosmic rays
SVT Event display developed
7November 18, 2014 DOE SC-OPA Review of 12 GeV
Comparison with microstrip trackers
Detector/module Strip length, cm ASIC ENC, eCMS TOB OB1 18 APV25 1100ATLAS Barrel 13 ABCD3A 1500CDF Run2b L0 24 SVX4 1600SVT 33 FSSR2 1600
10November 18, 2014 DOE SC-OPA Review of 12 GeV
Signal measurements (g, b sources, cosmic muons)
not bonded
Sr90
muons
11November 18, 2014 DOE SC-OPA Review of 12 GeV
SVT Test Beam at FermilabPerformance of SVT module has been studied at FNAL in beam test with 120 GeV protons. SVT module has been placed behind CMS pixel beam telescope (8 planes, ~6 mm track position uncertainty, 2×2 cm active area). Production SVT DAQ has been exercised at different event
rates Event block mode has been tested up to 100 k protons per 4
sec spill with no busy time Signal-to-Noise ratio agrees with results with r/a sources and
cosmic muons Several millions triggers have been taken at different
thresholds