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Auto Chromaticity and Tune Adjustments

Learn how to optimize tuning and chromaticity adjustments, including setting tunes, utilizing trackers, and verifying values for enhanced program performance. Discover common issues and suggested improvements.

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Auto Chromaticity and Tune Adjustments

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  1. Auto Chromaticity and Tune Adjustments Jerry Annala Feb 6, 2009

  2. New Page Image

  3. Program Function • Turn on Tune Trackers • Set tunes at .572 and .59 • Turn on Chromaticity trackers • Set Chromaticities at 4 units • Play RPOS curve with tune trackers on • Prompt ops to check with page C43 • Set tunes to .578 and .586 • Prompt ops to use page C101 • Set tunes to .576 and .583

  4. Tune Tracker During Chromaticity Measurement Desired Tunes At this step Chromaticity tracker turned on Vertical chromaticity changed Splittingtunes

  5. Adjustment with Chromaticity Tracker 3 adjustments to Hit desired values Trackers turned on

  6. RF Method to verify Tunes should be centered at Center of plot Fitted tune line Fitted tune line

  7. Typical Program Performance • Splitting tunes (1 minute) • Adjusting Chromaticity (1.5 minutes) • Run RPOS curve (1 minute) • Operator Check of Chromaticity and Coupling (?) • Set tunes for HEP (20 seconds)

  8. Issues and Improvements to make • A better choice of starting tunes might help • Tune up internal times used to wait for trackers to settle after turning on and making changes • Vertical tune tracker sometimes responds a little slow. • Tune tracker (vertical) sometimes locks on to different synch lines when cycled.

  9. Issues and Improvements to make • Vertical tune seems to move when vertical chromaticity is changed. • Need to have better interface to sequencer so it is clear how to run the program (especially if there is an error).

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