Speaker
Rama Calaga
(BNL)
Description
In RHIC, the phase advance between the two interaction points is optimized for an initial design beta*. This may not hold true as RHIC presently operates with a considerably reduced beta*. Chromatic optics measurements from RHIC are presented the enlarged beating is evident for reduced beta*. Phase advance changes between the IPs are proposed as a first attempt to reduce the model chromatic beta-beating. Recent measurements are performed to investigate the impact on the single beam lifetime and momentum aperture for the "modified" lattice. Measurements from the LHC are also discussed.
