ROD R&D Status K. Johns, C. Armijo, J. Steinberg (U. Arizona) H. Chen, F. Lanni, J. Mead (BNL) L. Hervas (CERN) A. Meyer, A. Kielburg-Jeka, A. Straessner (Dresden) G. Perrot, A. Bazan, F. Bellachia, I. Wingerter-Seez (LAPP) M. Citterio (INFN, Milano) D. Schamberger (SUNY, Stony Brook)

Optical Link Notes  Currently we build with Reflex Photonics SNAP12 Emcore SNAP12  Both 3.3 Gbps  Recent news/results Delivery date for Reflex Photonics 6.25 Gbps still +6 weeks  First promised for July 1 Both RP and Emcore 3.3 Gbps versions can run at higher speeds  Emcore shows better performance (up to 5 Gbps) based on measured BER 2

Optical Link Notes  6.25 Gbps and beyond Measurements with AZ test board 3 8 inches 2x8 inches and via 3.2 inches

Optical Link Notes  6.25 Gbps and beyond  Vias degrade eye pattern  No difference in trace length or layer 4

Optical Link Notes  In order to move to higher optical density we are now designing with Reflex Photonics LightABLE OE OE is an IC with 12 channel GaAs VCSEL or 12 channel GaAs PIN photodetector  Connected electrically via wire bonds  Connected optically via MT connector Present 6.25 Gbps Designer provides an electrical footprint on the PCB RP mounts (wirebonds) the OSA  OE part and mounting cost is ~$350 / die 5

Optical Link Notes 6

ATCA Sub-ROD Development (BNL)

ATCA Sub-ROD Development  AdvancedTCA 8U Module With separated +5V power connector and Gigabit Ethernet connector on front panel, it allows testing of main functions without ATCA crate IPMI development is underway, using development document and source code from DESY. Even though we use different processor, all the code is in C which helps software porting  One sub-ROD module was shipped to Dresden in late June/early July  High Speed Parallel Optical Links and FPGA SERDES Self loopback test works at 3.2Gbps on 12 channels, 40Gbps total bandwidth Sub-ROD (and sub-ROD injector) still awaiting 75 Gbps transceivers from Reflex Photonics Present plan is to do another round of sub-ROD and sub-ROD injector integration tests in October using Emcore parts which can run over spec (~5 Gbps)

ATCA Sub-ROD Injector (AZ)  Sub-rod injector ATCA card also now available 9

ATCA Sub-ROD Injector (AZ)  Testing with test ATCA backplane 10

ATCA Sub-ROD Injector (AZ)  Details of test backplane 11

ATCA Sub-ROD Injector (AZ)  Eventual testing in ATCA crate We received this demo model from ASIS 12

ROD in ATCA/AMC Form Factor  Present plan is to build processing units (ROD or ROD injectors) in AMC format on ATCA cards  ROBs would also reside in ATCA crate 13

ROD in ATCA/AMC Form Factor  AMC cards are Processing Units Contain optical receivers and FPGA based SERDES Perform energy calculations and partial Level-1 sums High speed, low latency connections for Level-1 sums require communication between AMC modules and possibly between different ATCA carriers Processing units can be developed independently of ATCA carrier board (using MicroTCA crate)  ATCA Carrier Board  Provides connections between AMC modules and also to ATCA backplane  Low latency switching protocol  Possible connection to ROB via 10G Ethernet  Provides connections to rear transition board for Level- 1 sums 14

AMC Card using LOB 15  4 x 12 channels per AMC card Stratix IV has 48 transceiver 8.5 Gbps  4 AMC cards per ATCA (ROD) EPROM DDR3 Flash Ethernet PCI Express Driver Microcontroller

AMC Card using LOB 16  4 x 12 channels per AMC card  Stratix IV has 48 transceiver 8.5 Gbps  4 AMC cards per ATCA (ROD)

AMC Sub-ROD  Two ATCA boards per half barrel FEC 2 SNAP12 connectors / AMC card x 1 FEB/SNAP12 x 4 AMC cards = 8 FEBs Assumes 10 Gbps transmission  One ATCA board per half barrel FEC 4 optical connectors / AMC card x 1 FEB / SNAP12 x 4 AMC cards = 16 FEBs This eliminates data transmission between different ATCA boards eases processing of the Level-1 trigger sum  The MTP connectors utilize the same MT ferrules and package them in a push-pull keyed connector housing for quick and easy connection The width of MTP connector is ~15mm, which is more than twice of the width of MT connector  Molex high density optical MT connectors Circular MT: single MT ferrule, 12 to 72 fibers per ferrule 1x6 Array: 6 MT ferrules, 12 fibers per ferrule  Both Molex and Tyco offer high density optical MT cable assemblies using 72-fiber MT ferrule in the industry standard MTP connector MTP Connector Disassembly of MTP Connector MT Connector

sLHC LAr ROD Upgrade R&D  Mailing list  CERN espace  Phone meeting First meeting was organized on Sept. 11 th ; people from Univ. of Arizona, BNL, Dresden, LAPP and Stony Brook Univ. were connected Goal was to update what everybody’s been working on and discuss how to proceed Plan to continue this phone meeting once a month