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

4November 18, 2014 DOE SC-OPA Review of 12 GeV

Region 1: Noise Performance

1 bad channel

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

8November 18, 2014 DOE SC-OPA Review of 12 GeV

Noise Occupancy

U1

U1 U2

U2

9November 18, 2014 DOE SC-OPA Review of 12 GeV

Cosmic Tracks and Coherent Noise Test

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