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Bob Michaels Report. Nov 27, 2012. Compton DAQ Development High Voltage Maintenance. p. 1 / 5. Bob Michaels, Kalyan Allada , Alexandre Camsonne , and DAQ Group. FADC Counting Mode Photon DAQ – present effort. e- det TBD.

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Compton DAQ Development High Voltage Maintenance

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Compton daq development high voltage maintenance

Bob Michaels Report

Nov 27, 2012

  • Compton DAQ Development

  • High Voltage Maintenance

p. 1 / 5


Compton daq development high voltage maintenance

Bob Michaels, KalyanAllada, AlexandreCamsonne, and DAQ Group

FADCCounting Mode Photon DAQ – present effort

e-det TBD

http://hallaweb.jlab.org/equipment/daq/compton_coda3.pdf

https://hallaweb.jlab.org/wiki/index.php/ComptonDaqDev

p. 2 / 5


Compton daq development high voltage maintenance

Bob Michaels, KalyanAllada, AlexandreCamsonne, and DAQ Group

Test Stand -- FADC for Photons

Done:

A setup with

“fast, modern” hardware.

“fast pulse integral” mode

data buffered on FADC

readout speed 1.1 MHz

Future :

Random pulsersimulation of particles

Inject and extract a ~1% asymmetry

p. 3 / 5


Compton daq development high voltage maintenance

High Voltage Maintenance

LeCroy 1458 HV

motherboard emulator Perl script

(Brad Sawatzky)

Serial

new serial card replaces old motherboards (Javier & Jack)

external 24V supply

Network

Java GUI

(Roman Pomatsalyuk)

p. 4 / 5


Compton daq development high voltage maintenance

High Voltage Maintenance

  • Progress

  • Set up 1 crate / learning (thanks Jack, Javier, Brad, Roman)

  • Rough count of (a) needs , (b) existing inventory

  • http://userweb.jlab.org/~rom/SBS_HV_19sep12.pdf

  • Plan

  • Fix another crate …

  • More accurate inventory , larger-scale tests

  • Scrounge (Hall B , MIT …) and/or buy new units (Wiener)

p. 5 / 5 Fini


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