r frey sid at slac 16dec2011 1 dbd planning: ecal loi section still a good starting point guiding...
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R Frey SiD at SLAC 16Dec2011 1
DBD Planning: ECal
LOI section still a good starting point
Guiding principles based on optimizing physics performance constrained by technological feasibility and cost
• multi-jet final states (PFA)• tau id and analysis• photons (4-vector)• electron id• Bhabhas and Bhabha acollinearity• hermiticity
Imaging ECal
R Frey, M Stanitzki
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“official” guidance on DBD content
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the biggie
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Completing the initial R&D goals for the baseline design
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Completing the R&D
• Goal: Complete the component R&D (done), build a test stack, and evaluate performance in a test beam.
• See Mani Tripathi’s talk yesterday…• If we clear the bump-bonding hurdle soon (!), we should have
a module ready for (SLAC) test beam by early summer.
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missing
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Endcaps!Only initial mechanical drawings so far (Marco)
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swept under the rug
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Calibration and alignment: Needs to be discussed in DBD
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technical option
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MAPS option was discussed in LOI.More or less in DBD??
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would be nice
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physics related performance studies
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possible performance results
• Photons Reconstruction efficiency in jets (in taus), e.g. efficiency as a function
of separation from charged tracks or other photons Photon vertexing (energy resolution)
• Taus
Identification of (separate the decay modes for tau pol)
• Jets Presumably already included in PFA performance in physics
processes
• Who will do it?
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summary
• Demonstrate the feasibility of the baseline ECal by completing the fabrication of the R&D module and getting some test beam results !
• Everything else (hopefully taken up in parallel):
Endcaps (mechanical and sensor “design”) Calibration and alignment MAPS Performance studies
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