The Bright Future

1
The Bright Future

• We wont rest on our Laurels !
• Tevatron is Changing.
• So will DØ.

DØ Run II
2
Tevatron Upgrade
3
(some) Run II Topics
4
D? Upgrade

• Columbia Leadership
• Upgrade Co-Leadership Tuts
• Calorimeter Electronics Kotwal,Tuts
• Silicon Trigger Evans,Gara
• Muon L2 Trigger Evans,Gara

5
D? Upgrade
Forward Scintillator
New Electronics, Trig, DAQ
Central Scintillator
New Solenoid, Tracking System Si, SciFi,Preshowers
Forward Mini-drift chambers
Shielding
6
Trigger System

• Too Much Physics !
• Trigger (132 ns between collisions)
• Sharp Thresholds
• Multi-Component Correlations
• Dont Forget Multiple Interacts
• 3 Level System in D?

7
Silicon Tracking

• 4 Layers Double Sided Strip Detectors
• 6 Barrel segments (30 wedges)
• All Have r? Readout res
• Layers 1,3 90? strips (10mm res) 2,4 2
  stereo (30mm res)
• 72 cm coverage (beam sz 25 cm)
• 12 F-Disks / 4 H-Disks
• Forward Coverage
• Total Channel Count 793K

8
Si Track Trigger Preprocessor

• Silicon Track Trigger MRIInclude Si Info onto
  Tracks at L2
• rf Info only ? PT , f0 , Impact Param
• Sharpen PT Thresholds
• Include Impact Param Info
• Displaced Vertices
• A Few Benefits..
• Z?bb for Jet E-Scale
• ?4 better Bgd Rejection for WH0
• Z Vertex Trigger KDICalc z-positions of
  Interactions
• 90 stereo
• Sharpen ET Thresholds
• ID Multiple Interactions
• s 500 mm (beam sz 25 cm)

9
Impact Parameter

• Impact Parameter Resolution
• 50 mm PT 1 GeV
• 15 mm PT 10 GeV

10
STT Preprocessor
SMTDetector
CFT Tracks(L1 Trig)
Cluster Finder
Associate Clustersto Tracks
50 ms Time Budget
Re-Fit Trackw/ Si Clusters
Global L2 Trigger
11
SVTZ Preprocessor
SMTDetector
Cluster Finder

• Vertices from all possible Layer 1,3 hit
  combinations (in 30 sector) ? histo
• Z-Positions of True Vertices ? Peaks in Histo

Histogram Accumulator
Feature Finder
Global L2 Trigger
12
Columbia Directions

• Hardware
• Calorimeter Electronics
• Silicon Track Triggers
• Muon L2 Trigger
• Analysis
• Electroweak
• B-Related Topics
• Fermilab SUGRA Working Group
• People
• In process of hiring a new Postdoc
• Increased use of Nevis Engineering
• Actively Recruiting Grad/Undergrad Students
• High School Student Involvement