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AGS PP Progress

AGS PP Progress . Haixin Huang. Time Meeting January, 17, 2012. Status.

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AGS PP Progress

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  1. AGS PP Progress Haixin Huang Time Meeting January, 17, 2012

  2. Status • The AGS polarization has been recovered over the weekend. The key is the vertical tune and chromaticity near 0+. AGS setup is reasonable stable: the polarization change can be reproduced by reloading different optics. The polarization is about 67% for 1.5-1.6*10^11. • Source polarization is around 76% last week when it was in good state, sometimes it is as low as 71%. As a reference point, the average source polarization from last run was 79%. • Injection polarization measurement done with CNI polarimeter for the first time. We take advantage of this capability to retune the Booster harmonics 3 and improved the polarization at AGS injection by 4% (relatively). • 9th harmonics are important for AGS jump quads operation. A new version of orbit control can smooth out the harmonics on the ramp very nicely. Haixin Huang

  3. Intensity Scan with Booster Scraping Source polarization: 76.17+-0.17% Haixin Huang

  4. Booster sin3v Scan The data from last night is not so good. Haixin Huang Relatively ~4% difference

  5. AGS 9th Harmonics Before and After Haixin Huang

  6. Remaining Job List • Extraction setup. • Load the jump quad timing for early part of ramp (before transition) to see if it give us additional gain of polarization. First test is to make sure P/S can take it. • Fine tuning the pulse shape for each pulse. The files for the two states are under testing today. • Modeling work with bare AGS and cold snake on. Haixin Huang

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