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Local Decoupling

Local Decoupling. Progress. Dynamic beta* squeeze Squeeze at STAR to 0.62 m succesful ‘nearly routinely’ Subsequent squeeze at PHENIX caused significant beam decay. Chromaticity control is critical BBA Able to measure offset at a few quads at injection energy

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Local Decoupling

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  1. Local Decoupling

  2. Progress • Dynamic beta* squeeze • Squeeze at STAR to 0.62 m succesful ‘nearly routinely’ • Subsequent squeeze at PHENIX caused significant beam decay. • Chromaticity control is critical • BBA • Able to measure offset at a few quads at injection energy • Is there a way to involve feedback to get a higher signal to noise. • Local decoupling • Some data taken, some not useful due to magnet control problems • Some time lost to RF failure • 40 GeVCeC test • Succesful ramp to store in one attempt • Measured blue beta* at IP2, yellow unmeasured (beam dump due to PASS failure) • Request for more time (3 hours) to finish characterizing the optics

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