Highlights from the Tracking Sessions 12 talks in three sessions Rough accounting: ILD SiD Generic 6...
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Transcript of Highlights from the Tracking Sessions 12 talks in three sessions Rough accounting: ILD SiD Generic 6...
Highlights from the Tracking Sessions
12 talks in three sessions
Rough accounting:
ILD SiD Generic
6 1.5 4.5
-OR-
Gaseous Solid State
4.5 7.5
Topics sampled for summary:
• Results from TPC Large Prototype
• SiD Tracker Performance (simulation)
• TPC Pixel Readout
• TPC Backgrounds
• Charge Division for Silicon Sensors
• “Alignment Aware” Si Sensors
Plus much more (apologies…)
Results from the Large TPC Prototype at DESYKlaus Dehmelt (DESY), Hirotoshi Kuroiwa (KEK)
Large TPC prototype
30 cm longitudinal driftImmersed in 1.25 T Bfield
Readout:
Double/triple GEMMicroMeGas
+Resistive PadsPixels (TimePix)
Large TPC prototype
30 cm longitudinal driftImmersed in 1.25 T Bfield
Readout:
Double/triple GEMMicroMeGas
+Resistive PadsPixels (TimePix)
From MediPix to INGRID (Jan Timmermans, NIKHEF)
TimePix chip plus deposited grid plus stand-offs: INGRID readout system (gas-gain plus 50 m pixelated readout)
Working towards ~10cm x 10cm array
Full instrumentation of ILD TPC requires~1010 channels (same order as VXD)
SiD Tracker Performance (full-ish simulation)
Full GEANT simulation plus strategy-based pattern recognition (Richard Partridge)
Near-perfect efficiency over full range in pT , |cos|
Top pair events at Ecm = 500 GeV
SiD Tracker Performance (full-ish simulation)
Momentum resolution probed with single muons
Consistent with (pT) = 0.2% 2.810-5 pT at 90°
Charge Division for Silicon Sensors
• SCIPP built discrete resistive network (SiD “charge division” sensor not available• Benchmark PSpice simulation
Observations:• Longitudinal resolution independent of R; grows as C
• Noise dominated by network, not amplifier
• Achieve resolution of ~6% of sensor length
• Z ~ 6mm for 10cm sensor
Jerome Carman (UCSCundergraduate)
Alignment-Enabled Sensors (Alberto Ruiz-Jimeno; Cantabria)