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{liao:sap2023-tupb014,
% --- JACoW template Dec 2024 ---
author = {Y.C. Liao and X. Liu and R.Y. Luo and B. Qin and W. Wang},
title = {{Design of a Large Momentum Acceptance Gantry Based on AG-CCT for Lightweight Proton Therapy Facility}},
booktitle = {Proc. 14th Symp. Accel. Phys. (SAP'23)},
eventdate = {2023-07-10/2023-07-12},
pages = {111--113},
eid = {TUPB014},
language = {english},
keywords = {toolkit, lattice, simulation, proton, optics},
venue = {Xichang, China},
series = {Symposium on Accelerator Physics},
number = {14},
publisher = {JACoW Publishing},
location = {Geneva, Switzerland},
date = {2024-11},
month = {11},
year = {2024},
isbn = {978-3-95450-265-3},
doi = {10.18429/JACoW-SAP2023-TUPB014},
url = {https://jacow.org/sap2023/papers/tupb014.pdf},
abstract = {{Superconducting (SC) gantry can be applied to proton therapy with significantly reduced footprint and weight. However, the relatively lower ramping limit of the SC magnetic field becomes a bottle-neck for fast energy change and beam delivery. The issue can be mitigated by designing a large momentum acceptance (LMA) beam optics. We present the design of an LMA gantry using AG-CCT SC magnets and symmetrical achromatic lattice. A fast degrader is combined in the design so that the gantry can rapidly switch energy during the treatment. The AG-CCT design process and beam transport simulation are all performed with our homemade integrated code CSPT, which has interfaces to Geant-4 and Opera, and can reach a maximum speed-up ratio of ~450 by applying parallel computation technique. The multi-particle simulation based on realistic field distribution proves that the gantry has a large momentum acceptance of ~20\%. Due to its large momentum acceptance, the dispersion effect caused by the scanning magnet is not neglectable. A dispersion compensation method, accompanied by a compact nozzle layout, is proposed to achieve a scanning field of 25×25 cm² with a maximum beam energy spread of 5.2\%.}},
}