Optics Corrections at RHIC

Excessive beta-beat, deviation of measured beta function from the calculated beta functions based on an model, in high energy colliders can lead to large deviation of beta function at collision point as well as other adverse ef- fects. The segment-by-segment technique was successfully demonstrated in the LHC operation for reducing the beta- beat. It was then applied to RHIC polarized proton opera- tion in 2011. This paper reports the experimental results of optics correction at RHIC. Future plan is also presented.