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SLHC CSC Electronics Upgrade Spearheaded by OSU CMS Group. A flash-ADC for each strip with digital storage Replace electronics on Highest Rate Chambers Deadtimeless. ME1/1 Electronics Upgrade 504 DCFEBs OSU 72 DMBs NE,UCSB 72 TMB (d.c.) TAMU,UCLA - PowerPoint PPT Presentation
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•A flash-ADC for each strip with digital storage•Replace electronics on Highest Rate Chambers•Deadtimeless
SLHC CSC Electronics Upgrade Spearheaded by OSU CMS Group
ME1/1 Electronics Upgrade 504 DCFEBs OSU 72 DMBs NE,UCSB 72 TMB (d.c.) TAMU,UCLA 8 MPC Rice 72 LVDB (+more power) 72 LVMB1008 Cables (default skewclear)
1st prototype Nov 2010
Analog-digital 18 layer board
The rest are slides from
SLHC Upgrade R&D
Two Concerns about highest rate ME1/1 Chambers 1) CSC Trigger questionable for >2.1 - for rate split strips in half - for $$$ ganged strips 4 strip modulo 4 2) At SLHC Rates conservative estimate shows SCA overuse in ME1/1 at 10%! - neutron background not well known
Replace Conventional ADC and SCA storage with Flash ADC and Digital Storage• New System Deadtimeless, Removes rate worries• Similar cost to old system Fairly Radical Idea – Couldn’t build 8 Years Ago
Digital CFEB – A Nice Idea for the SLHC
ME1/1 Electronics Upgrade 504 DCFEBs OSU 72 DMBs NE,UCSB 72 TMB (d.c.) TAMU,UCLA 8 MPC Rice 72 LVDB (+more power) 72 LVMB1008 Cables (default skewclear)
Overall Scope of Upgrade
Left over boards ME4/2 upgrate
Flash DCFEB R&D Board Status
A complex board (18 layers) Analog-Digital
Ben Bysma (0.5 FTE) -Schematics complete end of August -Board Layout underway -Board Production October - Results Early November We intend to instrumented a chamber with new electronics during the 7TeV14TeV LHC shutdown
Replace ME1/1 board will beused for ME4/2 upgrade chambers