An on-axis injection scheme using a double-frequency RF system in a storage ring with small dynamic aperture is proposed. By altering RF voltages, empty RF buckets can be created which will be used for on-axis injection. After bunches are injected, a reverse RF voltage altering process is performed and the injected bunches can be longitudinally dumped to the main RF buckets. The scheme allows reaping the advantages of the on-axis injection while still performing accumulation.
@article{arxiv.1601.04408,
title = {Using a double-frequency RF system to facilitate on-axis beam accumulation in a storage ring},
author = {B. C. Jiang and Z. T. Zhao and S. Q. Tian and M. Z. Zhang and Q. L. Zhang},
journal= {arXiv preprint arXiv:1601.04408},
year = {2016}
}