Download or read book Linear Optics Measurements and Corrections Using an AC Dipole in RHIC. written by and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: We report recent experimental results on linear optics measurements and corrections using ac dipole. In RHIC 2009 run, the concept of the SVD correction algorithm is tested at injection energy for both identifying the artificial gradient errors and correcting it using the trim quadrupoles. The measured phase beatings were reduced by 30% and 40% respectively for two dedicated experiments. In RHIC 2010 run, ac dipole is used to measure [beta]* and chromatic [beta] function. For the 0.65m [beta]* lattice, we observed a factor of 3 discrepancy between model and measured chromatic [beta] function in the yellow ring.