Transverse beam emittance measurement by undulator radiation power noise
Accelerator Physics
2021-04-07 v3
Abstract
Generally, turn-to-turn power fluctuations of incoherent spontaneous synchrotron radiation in a storage ring depend on the 6D phase-space distribution of the electron bunch. In some cases, if only one parameter of the distribution is unknown, this parameter can be determined from the measured magnitude of these power fluctuations. In this Letter, we report an absolute measurement (no free parameters or calibration) of a small vertical emittance (5--15 nm rms) of a flat beam by this method, under conditions, when it is unresolvable by a conventional synchrotron light beam size monitor.
Keywords
Cite
@article{arxiv.2012.00832,
title = {Transverse beam emittance measurement by undulator radiation power noise},
author = {Ihar Lobach and Sergei Nagaitsev and Valeri Lebedev and Aleksandr Romanov and Giulio Stancari and Alexander Valishev and Aliaksei Halavanau and Zhirong Huang and Kwang-Je Kim},
journal= {arXiv preprint arXiv:2012.00832},
year = {2021}
}
Comments
arXiv admin note: substantial text overlap with arXiv:2012.00965. substantial text overlap with arXiv:2012.00965