Speaker
Alexei Blednykh
(Brookhaven National Laboratory)
Description
The Electron-Ion Collider will operate with a flat hadron beam and crab crossing. In this work, the sensitivity of this collision scheme to small tune modulation is investigated with beam–beam simulations. The results show that a tune modulation at the level of $10^{-5}$ can already induce vertical emittance growth of about $10\%/\mathrm{h}$ under nominal EIC conditions, implying a very tight requirement on tune stability. A dynamic focusing scheme is then applied and shown to substantially reduce the emittance growth in the presence of the same modulation, providing a practical mitigation strategy and helping to define acceptable tune modulation levels for EIC operation.
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Author
Derong Xu
(Brookhaven National Laboratory)
Co-authors
Alexei Blednykh
(Brookhaven National Laboratory)
Yun Luo
(Brookhaven National Laboratory)