1 / 18

Update on Efforts to Develop New MI Phase Lock Controls

Update on Efforts to Develop New MI Phase Lock Controls. PIP Management Meeting March 28, 2012.

vila
Download Presentation

Update on Efforts to Develop New MI Phase Lock Controls

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. Update on Efforts to Develop New MI Phase Lock Controls PIP Management Meeting March 28, 2012

  2. Current MIPL ControlsNew Low-Level RF System for the Fermilab Booster SynchrotronC. Kerns, J, Crisp, Q. Kerns and H. MillerFermi National Accelerator LaboratorySubmitted to the ParticalAccel. Conf. March 16-19, 1987 Booster MI Phase Lock and LLRF

  3. Current MIPL Process Booster MI Phase Lock and LLRF

  4. Goals for New MI Phase Lock Controls Less perturbation of the beam, reduction of synchrotron oscillations. Shorter locking interval. *Somewhat conflicting goals. Booster MI Phase Lock and LLRF

  5. The Acceleration Phase Lock Loop The first trick is to smoothly transition from Acceleration Phase Lock to MI Phase Lock Booster MI Phase Lock and LLRF

  6. Platform for Developing New MIPL Controls Booster MI Phase Lock and LLRF

  7. Booster MI Phase Lock and LLRF

  8. Booster MI Phase Lock and LLRF

  9. Booster Testing • Acceleration PD gain and offset adjustments • Online testing of new acceleration phase det. • Booster retuning typically required • No Beam, MI phase lock testing • MIPL only locks DDS-VCO to MI RF, not to beam • Frequency curves changes were required • Single turn beam MI phase lock testing Booster MI Phase Lock and LLRF

  10. No Beam MIPL tests on February 1, 2012 Booster MI Phase Lock and LLRF

  11. MIPL with Beam on March 6, 2012 Booster MI Phase Lock and LLRF

  12. MIPL with Beam on March 6, 2012 Note changes in the Acceleration Phase Detector output. Booster MI Phase Lock and LLRF

  13. MIPL with Beam on March 6, 2012 Note changes in the Radial Position of Beam Booster MI Phase Lock and LLRF

  14. MIPL with Beam on March 16, 2012 Note changes in the Radial Position of Beam Booster MI Phase Lock and LLRF

  15. MIPL with Beam on March 16, 2012 Note changes in the Phase Drive due to AC Dampers Booster MI Phase Lock and LLRF

  16. MIPL with Beam on March 16, 2012 AC Dampers Off Booster MI Phase Lock and LLRF

  17. Going Forward • Trials have been made to reduce the rate of rise of the phase error feedback, on the bench, using different curves for the reference trajectory. • No significant improvement with this yet. • We will be looking to find a softer method for ensuring our initial conditions before MIPL. • Trials on the bench have been made to implement a phase lock by starting with a smaller delta F. • If nothing else, we can build a new divide by 32 module and replicate the current method in up to date, programmable hardware. Booster MI Phase Lock and LLRF

  18. Extras Running Frequency within 100 Hz of MI RF and locking. http://www.youtube.com/watch?v=KpfD9K3_V0o&feature=email Booster MI Phase Lock and LLRF

More Related