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REMEMBER , the ECAL is a part of a detector IT IS NOT a detector in standalone running

The criteria for the technological choice of ECAL My personal view. 1 - before any discussion on ECAL itself. REMEMBER , the ECAL is a part of a detector IT IS NOT a detector in standalone running Therefore, we must have a global view , including Integration S ervice

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REMEMBER , the ECAL is a part of a detector IT IS NOT a detector in standalone running

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  1. The criteria for the technological choice of ECAL My personal view 1 - before any discussion on ECAL itself • REMEMBER, the ECAL is a part of a detector • IT IS NOT a detector in standalone running • Therefore, we must have a global view , including • Integration • Service • DAQ and event builder • Maintenance • Reconstruction (CPU and disk capability) • … • Effect of other detector (i.e. temp. gradient due to TPC)

  2. My view 2 - Lessons from the past experiments ALEPH/DELPHI , D0/CDF , LHCB , CMS etc… 1 – START from physics (impact on physics precision … ILC is a precision machine) 2– Cost has to be related to the cost of “equivalent luminosity” (running cost vs Perf.) 3 – Risk analysis prefer Single technology (think about DELPHI ) 4 – Technology has to be adapted to the different scenario of the machine (D0 ECAL) 5– The cheapest could finally be the most expensive … (LHCb ECAL) 6– Running at ILC for 20 years …. Aging is essential (CMS ECAL PbWO4) 7 – … 999 – It has to be based on PROVEN engineering, technologies and data performances

  3. ILD organisation for technologies choices My proposal Avoid some LHC experts whonever understand PFLOW REVIEW PANEL • Composition • M.Demarteau , P.Granis, …, J.Timermans, H.Videau, , … • Duty and organization …. • meetings frequency, progress reports, etc.. • Jamboree, with people from both technology • SWOT analysis Strength , Weakness , Opportunity, Threat ILD-SB (JSB or whatever the name of the exec board) • DECISION by SB must include • RP report • Political aspects • Financial aspects • Expertise aspects (i.e. choice of ALEPH ECAL Wires chamber vs liquid Argon by J.Steinberger) • Check of the coherence between power/manpower and expertise of the labs proposing a detector

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