1. Kevin Burkett Harvard University June 12, 2001
Status of CDF-II
Kevin Burkett
Harvard University
June 12, 2001
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

2. Outline 2001: Run II has begun Last collisions were in 1996
Goals for Run II
What’s new in the CDF experiment
How are things working so far
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

3. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
Goals of CDF in Run II
Physics Goals:
Understanding electroweak symmetry breaking - Higgs Boson
Study CP violation and CKM Matrix in B system - sin2b, BS mixing
Precision Electroweak Physics – W Boson, Dibosons
Top physics – top quark properties, single top production
Searches for new phenomena – SUSY, Large Extra Dimensions, …
Detector Capabilities
Handle 132 ns crossing rate
Integrated tracking system
Precision vertex information
Ability to trigger on secondary vertices, hadronic B decays
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

4. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
CDF-II Experiment
Detectors retained from CDF Run I
Central, wall calorimeters
Central, extension muon detectors
New in Run II
Tracking Systems
Silicon tracking system
Central Outer Tracker
End plug calorimeter
Cerenkov Luminosity Monitor
Forward muon detectors
Scintillator time of flight
Front-end electronics (132 ns)
Pipelined trigger, DAQ
All new software
MUON CHAMBERS(CMP)
CMX
COT .5
1.0
1.5
2.0
2.5
3.0
END WALL
HADRON
CAL.
Inner silicon
6 layers 3 30
SOLENOID
Intermediate silicon
1 or 2 layers
= 1.0
= 2.0 n
END PLUG EM CALORIMETER
END PLUG HADRON CALORIMETER
= 3.0 m
EM CALORIMETER
HAD CALORIMETER
TOF
MUON CHAMBERS(CMU)
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

5. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
CDF-II Detector
MUON CHAMBERS(CMP)
Solenoid retained from Run I
New drift chamber(COT)
96 layers
3d silicon tracking
7 layers in central region
8 layers in forward
Scintillating tile plug
calorimeter covers to |h|=3.6
CMX
COT .5
1.0
1.5
2.0
2.5
3.0
END WALL
HADRON
CAL.
Inner silicon
6 layers 3 30
SOLENOID
Intermediate silicon
1 or 2 layers
= 1.0
= 2.0 n
END PLUG EM CALORIMETER
END PLUG HADRON CALORIMETER
= 3.0 m
EM CALORIMETER
HAD CALORIMETER
TOF
MUON CHAMBERS(CMU)
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

6. Silicon Detector (Side View)
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

7. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
Data taken with CDF-II
CDF rolled in early September 2000 for the commissioning run
Prototype silicon (60o), ~65% COT electronics coverage
5 stores 10/3/00 – 11/4/00, 1p x 8pbar and 36p x 36pbar
Peak luminosity ~ 1029
CDF rolled back in February 2001 for the start of Run II
2 1p x 8pbar stores 4/3/01-4/5/01
Peak Luminosity ~ 1028
1 36p x 36pbar store 4/27/01
Peak luminosity ~ 1030
~10 nb-1 written to tape
Latest running started last Thursday
Data used extensively to evaluate performance
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

8. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
CDF Detector Roll-In
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

9. Calorimeter, Shower Max Extension, Forward Muon
CDF-II Status (June 1)
Sub-system
Instrumented
Operational
Luminosity Monitor
100%
Silicon : L00,SVX
ISL
95%
67%
COT
Calorimeter, Shower Max
Central Muon
Extension, Forward Muon
90%, 50%
Time-of-Flight 8%
Level-1
Level-2
80%
commissioning
Level-3
developing filters
Data Logging
full rate (20 Mb / sec)
Offline
being tuned with data
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

10. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
COT Performance
COT Event Display
Single Hit Resolution s ~ 200mm
(Goal 180mm)
-0.2 cm
0.2 cm
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

11. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
COT Performance
Conversions
Some Simple Measurements:
(commissioning run data, Level 3 tracking)
Ks  p+p-
m = 499 ± 0.2(stat) MeV/c2
L  p+p-
m = 1116 ± 0.1(stat) MeV/c2
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

12. Silicon Performance: Beam Line
Impact parameter (d0) will show a sinusoidal f-dependence if the true beamspot is different from the nominal
Plot d0 vs. f, fit beamspot
Compare:
Offline silicon tracks
Silicon Vertex Tracker (SVT)
Runs online
Used in Level 2 Secondary Vertex Trigger
True Beamspot d0 d0
Nominal
Beamspot
x=0,y=0
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

13. Silicon Performance: Beam Line
Silicon Online
(SVT)
d0(cm)
f=0
f=360o
Silicon Offline
d0(cm)
f=0
f=360o
Offline: x=-1.3mm y=4.1mm
SVT : x=-1.5mm y=4.3mm
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

14. COT Performance: Beam Line
COT Offline
D0(cm)
f=0
f=360o
Can do the same thing with COT offline tracks and the XFT hardware tracker
For the XFT, a shift in the beamspot can be seen as a shift in the PT bin
XFT
DPT
f=0
f=360o
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

15. Tracking Performance: COT + Silicon
COT Outside-In tracking:
Start with COT track
Extrapolate inward and add silicon hits
Compare impact parameter COT only vs. COT+Silicon
Corrected for beam offset
COT+SVX
COT Only
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

16. Calorimeter Performance
April Collision Data million events
Jet ET (GeV)
Jet h
New Plug
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

17. Muon System Performance
Old muon chambers
New reconstruction code
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

18. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
Trigger Performance
Level 1
Triggering on jets, tracks, electrons, muons, SET, Missing ET
XFT Df= 6 mrad (Goal 8 mrad)
Level 2
Tagging trigger decision based on jets, SET, Missing ET
Decisions made correctly
Df(XFT-Offline)
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

19. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
Interesting Events
1st W  en Candidate
Missing ET 38 GeV
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

20. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
Interesting Events
3 Jet Event
Kevin Burkett, FNAL Users' Meeting - June 12, 2001

21. Kevin Burkett, FNAL Users' Meeting - June 12, 2001
Conclusions
2001: Run II is happening
What’s new in the CDF experiment?
Almost everything
How are things working so far?
Excellent
When do we expect first results?
Summer 2002
Kevin Burkett, FNAL Users' Meeting - June 12, 2001