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{song:cyclotrons2022-mopo001,
author = {Q.Q. Song and H.R. Cai and Q.K. Guo and A.L. He and T.Y. Jiang and Y. Wang and Z.G. Yin and T.J. Zhang and B.H. Zhao},
% author = {Q.Q. Song and H.R. Cai and Q.K. Guo and A.L. He and T.Y. Jiang and Y. Wang and others},
% author = {Q.Q. Song and others},
title = {{A Real-Time Controller for Rapid Energy Degrading of the CYCIAE-230 Cyclotron Beam Production System}},
% booktitle = {Proc. CYCLOTRONS'22},
booktitle = {Proc. 23rd Int. Conf. Cyclotrons Appl. (CYCLOTRONS'22)},
pages = {47--50},
paper = {MOPO001},
language = {english},
keywords = {controls, real-time, proton, software, hardware},
venue = {Beijing, China},
series = {International Conference on Cyclotrons and their Applications},
number = {23},
publisher = {JACoW Publishing, Geneva, Switzerland},
month = {10},
year = {2023},
issn = {2673-5482},
isbn = {978-3-95450-212-7},
doi = {10.18429/JACoW-CYCLOTRONS2022-MOPO001},
url = {https://jacow.org/cyclotrons2022/papers/mopo001.pdf},
abstract = {{The energy selection system (ESS) plays an important role in a proton therapy system. Usually, it consists of an energy degrader, a set of achromatic bending magnets, an envelope collimator, and a momentum-selecting slit. In CIAE, a dedicated beam transportation line, including these essential elements, for the CYCIAE-230 superconducting cyclotron has been designed and manufactured for study purposes. To reduce the layer switching time, e.g. typically within 50 milliseconds, this ESS system takes advantage of VME-based real-time controller design. On one side, this controller uses S-curve to direct drive the step motors of various actuators, this is done by an off-the-shelf embedded controller. On the other hand, it uses Data Distribution Service (DDS) communication protocol to tap into the nozzle control system network directly. In such a manner, the energy requirement can be efficiently handled and the controller is also responsible for the current regulation of the 46 magnets. The design of this high-efficiency controller will be reported in this paper, both from hardware and software aspects. Preliminary test results will also be evaluated and analyzed to direct further improvement of the system.}},
}