1. Electronics Review, May 2001Darin Acosta1 OPTICAL SP 1 Muon Sorter 3  / port card 3  / sector ME1 ME2-ME3 ME4 SR DT TF SP From CSC Port Cards MS MB1 PC From DT Track-Finder 24 Sector Receivers (+12 for ME4) 12 Sector Processors To Global Muon Trigger GMT RPC 44 44 88 The CSC Track-Finder 12 sectors (UCLA)(Florida)(Rice) (Vienna) From DT Track-Finder

2. Electronics Review, May 2001Darin Acosta2 Sector Receiver Functionality 1. Receive 6  segments via 12 optical links from 2 Muon Port Cards p Require 3 Sector Receivers for one 60° sector 2. Synchronize the data 3. Reformat the data into track segment variables p LCT bit pattern  , ,  b,... 4. Apply corrections for alignment 5. Communicate to Sector Processor via custom backplane (Channel Link) 6. Fan out ME1/3  segments to DT Track-Finder } via LUTs

3. Electronics Review, May 2001Darin Acosta3 Sector Receiver Logic JTAG interface Controller FPGA Front Panel Optical Receiver Optical Fiber from MPC Deserializer Optical Receiver Optical Fiber from MPC Deserializer Front FPGA LUTSLUTS LUTSLUTS Back FPGA To Barrel To Backplane VME Repeat for each Muon

4. Electronics Review, May 2001Darin Acosta4 Sector Processor Functionality 1. Accumulate track segments for possibly more than one B.X. 2. Extrapolate in 3D from one station to another for all possible track segment combinations 3. Assemble tracks from extrapolation results 4. Select best 3 tracks and cancel ghosts 5. Assign track parameters: p T, , , quality

5. Electronics Review, May 2001Darin Acosta5 Sector Receiver/Processor DAQ Store all input data ~600 bits/sector/b.x. Store all output data ~60 bits/sector/b.x. To CSC DAQ From trigger primitives

6. Electronics Review, May 2001Darin Acosta6 CSC TF DAQ Bandwidth è Send input of Sector Receiver (output of Muon Port Card) and output of Sector Processor (input of CSC Muon Sorter) to DAQ stream for diagnostics è Send ~660 bits per L1A per Sector Receiver/Processor è 12 sectors and 100 kHz L1A rate  100 MB/s è One S-LINK64 handles 200 MB/s è Note that trigger data is expected to be sparse, so this bandwidth could be compressed if needed è CSC Track-Finder DAQ acts as additional DDU for CSC system (plan to use existing DDU design)

7. Electronics Review, May 2001Darin Acosta7 Mirror CSC DAQ Path DAQ MBs send data from front-end  30 DDU SLINK + 1 12 optical fibers Sector Processors send L1 data CSC DDU designed by Ohio State Univ. 18 optical fibers