Fabrication & Assembly of Opto-Rx12 Modules for CMS- Preshower S. K. Lalwani Electronics Division Bhabha Atomic Research Centre Mumbai –

Preshower in CMS Structure

~2.49m MB TYPE2 MB TYPE3 MB TYPE1 MB TYPE0 K Chip Total 124 x 4 = 496 Mother boards Preshower Disc ( 1 of 4 )

Preshower Readout & Control Architecture ES-DCC Optical Receivers Spy Memory Data Reduction Algorythms, Formatting Optical Readout Path FEC Module Optoelectronics Link Controller processor CLK & T1 logic TTCrx TTCvi module Front End Readout ASICs Front End Control ASICs Control Path ClkLV1I2CI2C DCU IVIV I2CI2C CCU Slow Control & Fast Commands Re Subdetector Event Builder K chip PACE ADC Fast Timing Slow Control System Motherboard GOH DOH (Digital Opto-Hybrid) (Gigabit Opto-Hybrid) ( S-Link) Role of Opto-Rx12 Module Mbps To Local DAQ

Role of Opto-RX12 Data Rate : 1208 Optical data 800Mbps each = 1Tbps Data Rate : 1208 Optical data 800Mbps each = 1Tbps Only 2% occupancy (useful data) Only 2% occupancy (useful data) Opto-Rx12 Module : Opto-Rx12 Module :  Receives data from 12 optical lines  Implements Data Reduction Algorythms in an FPGA Several Opto-Rx12 modules would be plugged into a VME-based readout system, which will send the reduced data (Events) to CMS DAQ. Several Opto-Rx12 modules would be plugged into a VME-based readout system, which will send the reduced data (Events) to CMS DAQ.

Opto-Rx12 Revision 1 FPGA with embedded De-serializers (Altera 1SGX40GF1020) 12 channel Optical Receiver (NGK- POR10M12SFP) Connector for 12 Fibre Ribbon 115mm 75mm 5 PMC connectors (280 bit I/O bus)

Opto-Rx12 Evaluation Setup Pattern Generator - Generates 12 optical serial streams Host Board - Provides space for Opto-Rx12 plug-in - USB interface

Opto-Rx12 Evaluation Setup

ECIL’s Quotation to CERN ► Unit Price : 1100 CHF for Quantity of 150 Nos. ► Includes:  Fabrication, Assembly and Testing of Opto-Rx12  Cost of Components except Optical Receiver (NGK’s POR10M12SFP) ► CERN must provide:  Optical Receiver Chips  Complete Test Setup including boards (2 sets), firmware, software and documentation

Challanges ► 14 layer PCB ► BGA soldering ( > 1000 balls) ► Testing/ debugging (?)

Current Status: Opto-Rx12 Module Revision 3 Bigger FPGA (Altera EP2SGX60EF1152C5N)

Changes in OptoRx Rev 3 Linear Regulators Linear Regulator replaced by Switching Regulator on an adaptor PCB

Opto-Rx12 Test Setup (Final ?) Host Board Opto-Tx8 Module Opto-Rx12 Rev. 3 Optical Splitter 812 USB Port LEDs Switches

Many Thanks

OptoRx Module Revision 1