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This document outlines the design and testing of various components for photon detection systems in high-energy physics experiments. Key elements include the integration of Forward and Barrel calorimeters, providing accurate energy summation for L1 trigger tagging, and the use of advanced timing and signal processing techniques with high-speed FADC chips. Emphasis is placed on dynamic range, timing resolution under 400 ps, and robotic assembly of Xilinx components. The document also discusses the potential for Ethernet connectivity and mixed VHDL design for enhanced signal handling.
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3425 PMT channels Forward, Barrel Calorimeters Energy Sum for L1 trigger Tagger, Start, Veto, TOF, Cerenkov CW beam No crossing signal 500 MHz buckets 500 MSPS $80 250 MSPS, 8 bit FADC chip $20 Dynamic range adequate < 400 ps timing achievable 3360 Central Drift Anodes 200 micron resolution 8 bit, 250 MSPS with log amp 10 bit dE/dx GlueX Flash ADCs • 5760 Forward Drift Cathodes • ? MSPS • ? bit, positive signals
Single channel FADC prototype Test bed for: • SPT converter chip • Xilinx chip and software • Mentor PCB & FPGA software • Intellectual Property (PCI core) • Robotic assembly
Next (final?) version Energy sum Ethernet Small Xilinx FADC Xilinx V2PRO Clock/ Sync 6U PICMG 2.16
