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Compton DAQ Development High Voltage Maintenance

This report details the collaborative efforts of Bob Michaels, Kalyan Allada, Alexandre Camsonne, and the DAQ Group on the Compton DAQ developments. It covers advancements in photon data acquisition, specifically the implementation of FADC counting modes and high voltage maintenance activities. Key achievements include a test stand setup with fast hardware for data acquisition at 1.1 MHz and ongoing high voltage maintenance, including replacing outdated components and improving inventory management. Insights into future plans for testing and equipment upgrades are also discussed.

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Compton DAQ Development High Voltage Maintenance

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  1. Bob Michaels Report Nov 27, 2012 • Compton DAQ Development • High Voltage Maintenance p. 1 / 5

  2. 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

  3. 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

  4. 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

  5. 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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