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RHIC Status

RHIC Status. Haixin Huang. Time Meeting 02 /8/ 2011. Emittance In Three Overnight Stores. Chronicle History of Last Week. Feb. 1 Provide 28x28 collisions overnight per STAR’s request. It ended due to P/S failure.

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RHIC Status

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  1. RHIC Status Haixin Huang Time Meeting 02/8/2011

  2. Emittance In Three Overnight Stores Haixin Huang

  3. Chronicle History of Last Week Feb. 1Provide 28x28 collisions overnight per STAR’s request.It ended due to P/S failure. Feb. 2 Provide 65x65 collisions overnight. Some 9MHz cavity commissioning was done. Feb. 3. Maintenance day and orbit feedback work continued in the evening shift. 76x76 store eneded by yi3-tq4 trip. Feb. 4 109x109 collisions for overnight store. 9MHz cavity development. Collimator setup was retuned. Feb. 5 109x109 collisions for overnight store. New orbit feedback algorithm commissioned but not finished. Feb. 6 Finished new orbit feedback algorithm development. RMS and mean orbits are within 0.2mm through ramp. 109x109 collisions overnight, but with large blue vertical emittance growth. Feb. 7 AGS RF water leak and warm snake problem prevented beam development during day and evening shifts. Struggled overnight to provide a store. Feb. 8 Searching for the source of the blue emittancegrowth. Haixin Huang

  4. Orbit on Ramp with New Feedback Haixin Huang

  5. Blue Vertical Emittnace from CNI Tune near 0.7 Tune near 0.9 Haixin Huang

  6. Plan for 2/8/2011 • Measure chromaticity on the ramp and correct them. • Search for the source of blue emittance growth. • Put a store of 109x109 for experiments • Increase bunch intensity with steps. Haixin Huang

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