Gluex flash adcs
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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

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GlueX Flash ADCs

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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


Xilinx schematic


Mixed VHDL & Graphics


Robotic Selective Assembly


Next (final?) version

Energy sum

Ethernet

Small

Xilinx

FADC

Xilinx

V2PRO

Clock/

Sync

6U

PICMG 2.16


Cockcroft-Walton PMT base


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