| Paper | Title | Other Keywords | Page |
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| MOPB003 | Study on a Polarization Controllable Undulator for High-Gain Free Electron Lasers | polarization, undulator, controls, radiation | 18 |
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Funding: Work is supported by National Natural Science Foundation of China (12175224, 11805200) SASE FEL can generate intense and coherent linearly-polarized X-ray when high energy electron beams travelling through a long planar undulator. It is also of great importance and interest to control the polarization of FEL. One possible solution is utilizing a customized undulator to adjust the magnetic field direction. By tuning the displacement of the magnetic block arrangement, variation of polarization could be achieved. In this paper we study on a polarization controllable undulator to realize the variable polarized magnetic field. Different shapes and design considerations of the magnetic block configuration will be introduced. The value of peak field and the region of good field will be analysed and discussed. |
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| DOI • | reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB003 | ||
| About • | Received ※ 01 July 2023 — Revised ※ 08 July 2023 — Accepted ※ 09 July 2023 — Issued ※ 20 July 2024 | ||
| Cite • | reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml) | ||
| TUPB008 | Evaluation of Field Quality for Elliptical and Curved Magnets | multipole, FFAG, octupole, controls | 96 |
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| 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) | ||