JACoW is a publisher in Geneva, Switzerland that publishes the proceedings of accelerator conferences held around the world by an international collaboration of editors.
@inproceedings{tang:fls2023-we4p21,
author = {J.Y. Tang and Z.H. Bai and T.L. He and G. Liu and Y. Mo and A.X. Wang and P.H. Yang and Z. Zhao},
% author = {J.Y. Tang and Z.H. Bai and T.L. He and G. Liu and Y. Mo and A.X. Wang and others},
% author = {J.Y. Tang and others},
title = {{Some Beam Dynamic Issues in the HALF Storage Ring}},
% booktitle = {Proc. FLS'23},
booktitle = {Proc. 67th ICFA Adv. Beam Dyn. Workshop Future Light Sources (FLS'23)},
eventdate = {2023-08-27/2023-09-01},
pages = {196--199},
paper = {WE4P21},
language = {english},
keywords = {storage-ring, collimation, injection, scattering, operation},
venue = {Luzern, Switzerland},
series = {ICFA Advanced Beam Dynamics Workshop},
number = {67},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {01},
year = {2024},
issn = {2673-7035},
isbn = {978-3-95450-224-0},
doi = {10.18429/JACoW-FLS2023-WE4P21},
url = {http://jacow.org/fls2023/papers/we4p21.pdf},
abstract = {{HALF (Hefei Advanced Light Facility) is a fourth-generation synchrotron light source that just started construction in 2023. With 2.2 GeV in energy, 350 mA in beam current and 86 pm.rad in emittance, the HALF storage ring faces several beam dynamics challenges. This presentation gives the recent study on some of these issues, in particular the beam collimation and the influence and compensation of the insertion devices. For beam collimation, different beam loss mechanisms have been studied, and the Touschek scattering and beam dumping are considered the two major effects in designing the collimation system. Then two collimators with movable horizontal blades and fixed passive vertical blades are being designed, with the main focus on the collimation efficiency and impedance. For the influence of the insertion devices, it is found that some of the long-period undulators have a high impact on the beam dynamic aperture due to low beam energy and originally small dynamic aperture. The local compensation methods for both linear and non-linear effects have been studied. Instead of the traditional compensation method by electrical wires, the method of using two combined magnets with quadrupole and octupole fields at the two ID ends in restoring the dynamic aperture is also studied and compared.}},
}