Feasibility study of an orbit feedback system for the KEKB facility

An orbit feedback system is vital for maintaining an optimum collision condition at a B factory where two beams circulate in separate rings. For this purpose the beam-beam deflection technique, pioneered at the SLC, may be utilized particularly for detecting an orbit offset at the collision point. To study feasibility of this technique at the KEKB rings we carried out a beam test using a pair of stripline monitors installed in the TRISTAN. The main purpose of the study is to see whether we can detect orbit offsets which are artificially introduced using electro-static separators with sufficient accuracy or not. We succeeded to detect these offsets with enough accuracy using these two beam monitors and have had a confidence that this method will work well also in the KEKB case