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HO Strawman Proposal

Propose to replace HPDs in R1 and R2 with SIPMs, ASAP R0 OK, leave alone. SIPM benefits Work in B field Better QE Better signal-to-noise (higher gain) QIE/HTR/DCC will remain unchanged Upgrade will remain in place for life of CMS (OK for MTT). HO Strawman Proposal. Muon response for YB1.

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HO Strawman Proposal

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  1. Propose to replace HPDs in R1 and R2 with SIPMs, ASAP R0 OK, leave alone. SIPM benefits Work in B field Better QE Better signal-to-noise (higher gain) QIE/HTR/DCC will remain unchanged Upgrade will remain in place for life of CMS (OK for MTT) HO Strawman Proposal Jim Freeman

  2. Muon response for YB1 HPD SiPM Time slew SiPM HPD Jim Freeman

  3. SD SD SD Run Run Run Fast Path Timeline 2009 2010 2011 Remove ALL R2 RMs Install 2 SIPM RBXs Order R2 SIPMs, Fab R2 boards Order 1K SIPMs: R1 Fab SIPM / Int cards Install R1 Install R2 Jim Freeman

  4. Decide not to operate R2 (now) Not needed for early physics Need HPDs for R1 replacements, spares Get jump start on upgrade by removing RMs Evaluate Hamamatsu, FBK diodes on bench (now – March) Performance (done!) Lifetime Install 2 RBXs of SIPMs (Hama, FBK) (Feb-Mar) Develop utilities needed for DCS, … Order SIPM for HO upgrade of R1, R2 (Mar 09) Build Cards (Mar – Oct) Build tested RMs with R2 Install as possible, 2009 shutdown, 2010 shutdown Fast Path Decisions Jim Freeman

  5. SD SD SD Run Run Run Relaxed Path Timeline 2009 2010 2011 Install 2 SIPM RBXs Fab SIPM / Int cards Order 2K SIPMs: R1, R2 Install R1 Jim Freeman

  6. Requirements Document for HO SIPMs Jim Freeman

  7. MTT Concept (Phase II) Jim Freeman

  8. Using HO for MTT? • Existing HO ~ ½ segmentation of desired MTT. OK like this? If not  • Replace SIPMs with EDUs. Read out each of the 4 fibers per tile, analog info gives improved position resolution. • New QIE/back end electronics F1 F2 Jim Freeman

  9. Don’t install 3X3 SIPMs Rather develop EDUs Install EDUs 2011 with old electronics At some point in the future (2015?) upgrade to new electronics using same EDUs Fine MTT Scenario Jim Freeman

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