1. CMS HCAL optical links Eric Hazen (BU), Tullio Grassi (UMD) OptoWG - 28 Sept 2011

2. Existing system (production ~2004) ~3000 fibers (50/125 graded- index multimode, 90-meter long) SFF Dual receivers from Stratos Lightwave (marketed for 1.5 Gbps, tested at 1.6 Gbps) Front-End (readout) Front-End (control) TTCrx Optical receiver TRR-1B43-000 Counting room (VME crates) ~140 Single-Mode fibers (SMF28 from Corning) No issues with fiber reliability and performance. Not all installed fibers were good, but none have measurably degraded in service. No failures of Vcsel transmitters. No failures of TTC optical receivers ( TRR-1B43-000). We lose ~3 Stratos receivers/year with 3000 fibers in service  “easy” to swap them. TTCex ( 80 Mbps) 850nm VCSEL HFE219x-541 from Honeywell GOL running at 1.6 Gbps 2 Radiation: TID = 1 krad = 10 Gy, neutron fluence = 10 12 /cm 2, charged hadron fluence = 2 10 9 /cm 2.

3. 3 Rear-side of a Front-end readout card: connection of individual fibers to the VCSEL A heat shrinking tube holds the fiber in place  limited volume. No major problems has been observed in the existing readout electronics.

4. Upgrade of (part of) CMS HCAL. Installation in ~2016 4 ~ 2 x 100 single-mode fibers (SMF28 from Corning) GBTX transceiver CERN SFP+ ? CERN GLIB ? 4.8 Gbps counting room (uTCA crates) ~2000 fibers (50/125 graded-index multimode) Commercial 12-way receivers Front-End (readout) ?? ( 4.8 Gbps) GBTX (Tx-only) We plan to keep the existing fibers, preferably add a few. Upgrade only the (opto-)electronics parts. Major issue: find a transmitter with small volume for the readout modules (based on current understanding, there is no space for SFP+ transceivers on the barrel and encap). Front-End (control) Radiation: TID = 10 krad = 100 Gy, neutron fluence = 10 13 /cm 2, charged hadron fluence = 2 10 10 /cm 2.

5. 5 CMS HCAL Schedule 2011201220132014201520162017201820192020 123456789 10101 1212123456789 10101 1212123456789 10101 1212123456789 10101 1212123456789 10101 1212123456789 10101 1212123456789 10101 1212123456789 10101 1212123456789 10101 1212123456789 10101 1212 GBT, QIE10 HF CCM Full Prototype Testing TB/ R Production & Eval R QC R&D Prototype T Sys tests RR Prod/ B w GBT QC HF FE System & rad R Production & QC, Burn-in Inst testing R Assembly all HF PMT HF Splitters QC Burn-in & Prep Install 1/3 uTCA prototype Verify sw/fw R uTCA Prod, Full I&C w/ Full Operation uTCA w R&D & Install parasitic R QC,Burn-in legacy FE legacy FE, verification HF BE R&D Prototype (904) R Production R HBHE CCM HBHE FE RM validation System & rad Tests TB/ R Production QC Inst w/GBT eval R & assembly all HBHE Splitters Install Verify fw/sw Install 1/3 slice w oRCT I&C 1/3 uTCA Production Full I&C Verify fw/sw pt5 parasitic HBHE BE Baseline vendor Continue R&D 10% Procurement, R Production, Assembly, Test demonstrator (eval vendors) Assembly, Test R (Full) SiPM Requirements Prototype Procurement QC/Burn-in/Testing (hw & sw) Inst LV Power Supply Same schedule for both. QIE10 submission 8/2011, GBT prototype received 5/2012 for testing We need opto- electronics parts no later than the GBTX (preferably a few months before).