| Paper | Title | Page |
|---|---|---|
MOPB038 |
Achromatic Beam Design for a Laser-Driven Proton Therapy Accelerator | |
|
||
| Laser-driven ion acceleration is one of the research hotspots in the field of accelerator in recent years. The high energy ion beam accelerated by laser has the characteristics of small size, narrow pulse width and good directivity, so it has many potential applications. This work will introduce the beam line dynamics design of a laser driven proton radiotherapy planned to be completed by Peking University. The beam line will be used as the key system of the laser proton radiotherapy application demonstration device, and the beam transport system will complete the follow-up operation. The whole beam design can provide horizontal and vertical irradiation modes respectively. It can efficiently collect the large divergence beam generated by the laser. It also contains a complete energy selection system, which can effectively select the energy dispersion of the laser accelerated beam to meet the application requirements. Finally, the beam accelerated by laser passes through the beam transport system to provide a proton beam with a diameter of less than 5 mm and an energy propagation of less than 5% at the horizontal and vertical irradiation targets. | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
TUAA02 |
Acceleration and Transport of Protons in a PW Laser Accelerator | |
|
||
| Laser plasma accelerator has been considered as a promising candidate for future compact accelerator and radiation source. Laser ion acceleration is an extremely high gradient transient process: the established field can exceed TV/m, accelerating ions to high energy within tens of micron distance. Such pulsed high-current proton sources enable significant advances in many fields, such as FLASH tumor therapy, proton radiograph, and irradiation in extreme condition. With the support of the Ministry of Science and Technology of China, a prototype of proton radiotherapy system based on PW (10 15 W) laser accelerator is under construction by Peking University at Beijing Laser Innovation Center. In this presentation, we will introduce the latest progress of the laser proton accelerator, as well as the key technologies related to the project, such as improvement to the acceleration mechanism, transport of the broad energy spread beams, and the proton irradiation applications. | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |
| TUPB008 | Evaluation of Field Quality for Elliptical and Curved Magnets | 96 |
|
||
| The elliptical magnetic field zone is a useful tool for beam distribution homogenization and FFAG accelerators. Additionally, strongly curved magnets are studied for their application in beam transmission and nuclear fusion. However, traditional magnetic measurements, known as field harmonics, for straight magnets are not suitable for these two kinds of special magnets. In this article, advanced multipoles are used to characterize the fields of straight magnets with elliptical apertures and 2D axisymmetric enclosed curved magnets. The article provides a detailed analysis of magnetic fields using data from FEA or Biot-Savart law. Furthermore, the article discusses methods for characterizing the field quality of unclosed curved magnets used for gantry. | ||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-SAP2023-TUPB008 | |
| About • | Received ※ 09 July 2023 — Revised ※ 10 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 12 January 2024 | |
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | |