DCOM

1
Frances contribution to LHC HEP experiments

• Context of LHC in France
• France contribution in numbers
• Detector highlights
• ATLAS
• CMS
• LHCb
• Preparing for physics

2
The Context of LHC in France

• Strong and early support to LHC in the French
  community
• Ex Lausanne workshop 1984 , 25 physicists
  (CEACNRS) / 96 outside Cern
• and strong support at the government level
• Exceptional contribution 70 M
• 35 M (over index) 7 M (region) 25 M (
  230 man.years, 124 CEA / 106 CNRS)
• At present, 220 physicists involved, 25 of
  all particle nuclear.

LHC quadripoles Dapnia / IPNO Cern
3
LHC experiments
                         
ATLAS DAPNIA 20 CPPM LAPP LAL LPC LPNHE LPSC           58
CMS DAPNIA 15    LAPP         IPNL IRES LLR     43
LHCB   CPPM LAPP LAL LPC LPNHE             31
ALICE DAPNIA 5       LPC   LPSC IPNL IRES   IPNO SUBA TECH 52
CEA 40
CNRS/IN2P3 184
Labs and physicists participation today
4
Contribution to the detectors
Investment Budget (M )  CEA CNRS
ATLAS 12 32
CMS 4,2 20,3
LHCb   6,2
ALICE 1 6,6
Technical Manpower now / integral (man.years) CEA CNRS
ATLAS 21 / 650 67 / 800
CMS 12 / 380 52 / 527
LHCb   35 / 270
ALICE 6 / 65 35 / 270

• 65
• 80

• 1900
• 3000

5
ATLAS

• Toroidal magnet Original design
• M Virchaux CEA-DAPNIA
• Liquid argon  accordion 
• calorimeter
• D Fournier CNRS- LAL
• Cryostats , integrated solenoid
• Pixels
• Tile hadronic calorimeter

6
ATLAS muon spectrometer

• Dapnia et al.
• Barrel toroidal magnet (25x25m)
• engineering and supervision
• (CP)
• Completed tests june
• Muon chamber alignment system
• Barrel 1300 beams
• 30 m over 3000m2
• Magnetic field
• Hall probes positioning
• Reconstruction

7
ATLAS Electromagnetic calorimeters

• Liquid argon
•  Accordion  design
• Mechanics
• Barrel calo, PreSampler
• LAL, LAPP, LPNHE, LPSC, Dapnia, et al.
• End-Cap calos
• CPPM, LAL, LPNHE et al.
• Cryostats and cryogenics
• Barrel original studies
• End cap design and supervision LAL (CP)
• General cryogenics LAL (CP)
• Integration
• All 3 calorimeters completed and in the pit
• Barrel being cooled down 130 K !

8
ATLAS EM calorimeters electronics

• Readout architecture
• Analog pipeline
• LAL/Dapnia/Nevis
• First of long series
• Frontend , calibration
• LAL, LAPP, LPSC et al.
• Trigger
• Dapnia et al.
• Digital Readout
• LAPP, LPSC et al.

9
ATLAS pixels

• CPPM et al.
• RD
• Initial concept
• Mechanics, cooling
• F-E electronics
• Production
• 30 of  staves 
• (3 layers 112 staves total)
• Integration

10
ATLAS hadronic calorimeter

• LPC et al.
• Iron/scintillating tiles calorimeter
• Photomultipliers
• Electronics
• Laser system
• Integration
• Commissioning
• Completed

11
CMS

• Origin
• General concept (Denegri, Della Negra, Faure et
  al.)
• Extrapolate from Aleph solenoid (Desportes)
• Crystal choice (Schneegans, Peigneux et al.)
• Solenoid
• (4T, 14x6m)
• Dapnia (CP)
• Now cold test May-June

12
CMS Electromagnetic calorimeter

• Mechanics  alveoles 
• LLR
• Crystal test equipment
• Lapp
• Photodiodes  capsules 
• production and test
• IPNL et al
• Integration
• Modules
• Modules in coil (tooling Dapnia CP)

13
CMS Ecal monitoring and electronics

• Laser monitoring system
• Dapnia et al.
• Electronics
• Very Front End boards (IPNL)
• Trigger boards (LLR)
• Serial readout Processor (Dapnia)

14
CMS Tracker

• General
• FE hybrids design and production (IRES)
• Production database (IPNL)
• DAQ (IPNL)
• Tracker End Caps (petals)
• IPNL, IRES
• Design
• Assembly
• 1/3 of modules
• All services
• Integration of 1 endcap

15
LHCB

• CNRS-IN2P3 groups joined in 1998
• Electronics
• Calorimeter readout and trigger
• LAL, LPC, LAPP
• Muon Trigger and overall Level_0
• CPPM
• Mechanics
• Ecal and Hcal support structures
• LAPP

16
Preparing for physics Test beams

• Strong activity in test beams at Cern

ATLAS Analysis of Ecal uniformity
CMS Analysis of Ecal resolution
ATLAS Muon alignment system performance
17
Preparing for physics Software and Commissioning

• Large contributions to experiments software
• Related to the detector, from databases to event
  simulation/reconstruction

First cosmic ray in Spectrometer (in the pit)
Atlas full simulation
CMS cosmic ray in Endcap tracker
18
Physics analysis

• Strong involvement in physics analysis
• See contributions to physics TDRs
• and internal notes many!
• Organizing the French community
•  Physique Atlas France  ,  CMS-France 
• Coordinate activities (keeping labs autonomy)
• Share software tools and know-how
• Organize computing Grid, Lyon Tier 1 centre,
  Tier-2s , etc.  LCG-France  (see talk)
• Coordinate topics of theses
• Coordinate outreach

Top mass in Atlas
Higgs signal in CMS
Theses Past Current
ATLAS 43 14
CMS 31 7
LHCB 11 6
19
Conclusion and perspective

• LHC top priority in France HEP
•  Prospective CNRS-IN2P3 / CEA-Dapnia La Colle
  sur Loup 2004 
• Technical responsibilities of French labs were
  covered without major problems/delays and within
  budget (including some contingency)
• Some room now to start S-LHC RD
• Cost to completion of experiments French share
  covered (not easily)
• Computing is still a challenge ahead of us
  organization / funding
• Attract / get positions for new young physicists
  in LHC experiments
• is essential to get a scientific return at the
  level of the investment
• Communication on LHC strongly supported (ex
  press visit Cern 21Apr 2006)