ATLAS LAr calorimeter readout

1
ATLAS LAr calorimeter readout
2
Preamplifier Shaper

• RD to develop (integrated?) PA/Shaper systems
• SiGe technology emerging for analog applications
• Simulation
• Layout/Fabrication
• Integration level
• Radiation Hardness
• Performances
• System Characterization
• Motivations
• Re-optimization of the PA/Shaper response
• Radiation
• Power savings
• BNL interests
• Design/Simulation
• Radiation testing
• System performance studies

SCA Controller (DSM)
SCA (DMILL)
Shaper (AMS 1.2µ)
Préampli 0T (bipolar)
3
Preamplifier Shaper TH

• RD to develop integrated PA/Shaper/TH in SiGe
  technology
• Same as PA/Shaper assuming single ADC
  architecture
• Motivations
• Power savings
• BNL interests
• Design/Simulation
• Radiation testing
• Calibration
• Board Integration
• System performance
• Possible ATLAS collaborators
• Milano - Mauro et al.
• Orsay - Christophe and Nathalie

4
Tower Builder Optical Links

• Replace Differential twisted pair cables with
  optical links
• Optical Link 10-12 bits DR
• Transmit Layer Sums from the FEBs directly
• Supply to L1 all 4 layers
• Additional rejection by optimizing longitudinal
  shower shape
• Important _at_ high luminosity due to the fact that
  isolation cuts are less and less effective (as L
  increases)
• Potential BNL interests
• Development of 10-12 bit DR analog optical links
• Replacement of TBB
• Upgrade of Receiver board
• US Collaborators
• Univ. of Pittsburgh
• ATLAS Collaborators
• Will Saclay be still interested (???)

5
Power Supply

• Development of Rad-hard power supplies
• BNL interests
• Investigate use of Vicor Bricks to make Rad Hard
  version
• Prototype of updated MDI supplies.
• Radiation Damage Studies
• Noise performance
• Atlas Collaborators
• Milan Mauro, P. Maranesi, G. Riva (?)

6
ROD/Back-End

• Development of new RODs for different LHC upgrade
  scenarios
• BNL interests
• Investigation of new architectures
• Prototype/Tests of FPGA-based DSP based
  prototypes.
• System performance studies
• Updated specifications for a ROD system.
• ATLAS Collaborators
• Annecy
• Geneva

7
Roadmap

• Suppose we go for installation in 2014
• RD 2006-2009
• 3-4 yrs of RD to evaluate different options and
  implementations.
• Limited resources and manpower avoid too many
  options
• On the other end NOT wise to reduce at this stage
  
• Final Design decision 2010
• System tests 2009-2011
• How do we evaluate a new architecture?
• Testbeams would be available?
• Production 2011-2013
• Given our experience 2-3 yrs for production is
  maybe optimistic?
• Installation 2014

8
Local Resources _at_ BNL

• PA/SH // PA/SH T/H
• Simulation and Layout
• Sergio Rescia (Inst. Div)
• Jean-Francois Pratte (Inst. Div.)
• Frank Densing (Inst. Div.)
• Level I Interface Optical Links
• Optical Links
• Sergio Rescia (Inst. Div.)
• Hucheng Chen (Physics)
• System Issues
• Integration
• Hucheng Chen (Physics)
• Don Makowiecki (Inst. Div.)
• Tests
• Hucheng Chen (Physics)
• Augie Hoffmann (Physics)
• Pierrot Bichoneau (Physics)

• Power Supplies
• Development and Contact with Industry
• Jim Kierstead (Inst. Div.)
• Tests and Measurements
• Jim Kierstead (Inst. Div.)
• Pierrot Bichoneau (Phys. Dept.)
• ROD Development
• FPGA DSP
• Jack Fried (Inst. Div.)
• Joe Mead (Inst. Div.)