HLS (Hefei Light Source) is a second generation synchrotron radiation source. After injected into the storage ring at energy of 200MeV, the electrons will be ramped to 800MeV. During ramping, the magnetic fields of the bend, quadruple and sextuple magnets are ramped up synchronously to keep the working point of the storage ring unchanged. This process is carefully controlled by HLS control system, which is built under EPICS. Several measures are taken to insure the synchronization and linearity of the ramping.
@article{arxiv.physics/0111168,
title = {Ramping Control of HLS Storage Ring},
author = {Jingyi Li and Gongfa Liu and Weimin Li and Chuan Li and Kaihong Li and Caozheng Diao and Zuping Liu},
journal= {arXiv preprint arXiv:physics/0111168},
year = {2007}
}