March 13, 2017 - 4-Laser/LLRF Installation/Commissioning

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Let's meet Monday March 13th at 11am in the MCC conference room to organize 4-LLRF installation and commissioning. Please come prepared to speak to relevant items below, and/or invite those whom should attend. We'll end the meeting with a ~firm plan that Steve can post to the SAD calendar.

Topics

  1. Plan for 4-LLRF installation
  2. Software controls and screen readiness
  3. FSD implementation and testing
  4. First connection to lasers, manual testing 249/499
  5. Remote HLLAP control of laser frequency
  6. Repair bunch length
  7. Schedule for beam operations
  8. Beam tests: chopper, bunch length, energy spread
  9. Dry run for Fall 4-beam ops
  10. Running during the summer
  11. Installation of final system
  12. Any other topic you'd like to discuss

Summary

4-LLRF Installation
* Prototype 4-LLRF on track for SAD, requires about one week for install and RF testing [[media::4Laser_LLRF_March_ready.ppt]]
* FSD interface will monitor 35/70 MHz signals, thresholds set in EPICS, Rama will work w/ Brad to connect to FSD system
* As known, system will not detect 499MHz flip, requires upgrade of MO distribution for 250MHz
* Rama/Scott/Clyde will meet before/during 
* Present laser RF remains in rack, new 4-LLRF installed by buncher/chopper RF, 4-LLRF application recycles existing RF channel names
* Michele's HLAPP test will happen once manual control tested okay
* Bench test isolation between RF channels >45 dB
* Tomasz wants to know how precisely power level set for 10 dBm
4-Beam Testing
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