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Weekly Status Update and Schedule for December 4, 2007

This report provides insights into the current status of beam dynamics and machine development as of December 4, 2007. Recent speculation indicates that the reduced performance of the yellow beam may be due to a small blue transverse emittance comparison. Adjustments made overnight included reducing deuteron bunch intensity and increasing the number of bunches per ring, which yielded positive results. The upcoming schedule focuses on physics production during weekends and evenings, while weekdays are reserved for various machine developments, including tune feedback and scrubbing.

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Weekly Status Update and Schedule for December 4, 2007

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  1. d-Au Setup Status & Schedule 04 December 2007 Kip Gardner

  2. This week’s fills

  3. Status • Current speculation is that poor yellow lifetime is due to small blue transverse emittance compared to yellow. • Overnight we reduced deuteron bunch intensity and increased number of bunches in each ring; this helped. • Exploring options for increasing blue or decreasing yellow beam size.

  4. Schedule • Physics production stores Weekends, Evenings and Owls. • Machine development Weekdays.1) Yellow tune feedback ramp and replay.2) Injection drift compensation.3) Increase number of bunches and bunch intensity.4) Scrubbing.5) …

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