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MOIAA02 |
Some Discussions on Coherent-Synchrotron-Radiation-Induced Microbunching Instabilities in High-Brightness Electron Beams | |
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Funding: This work is supported by the Fundamental Research Funds for the Central Universities (HUST) under Project No. 2021GCRC006 and National Natural Science Foundation of China under project No. 12275094. It is the coherent synchrotron radiation (CSR) that may induce collective effects in the electron bunch, as a high-brightness electron beam passing through a single-pass or storage ring accelerator. Such microbunching effect can be both beneficial and detrimental, from which this effect can enhance the coherent radiation, it may also lead to a degradation in the overall quality of the bunch. Therefore, it is necessary to gain a deeper understanding of the dynamical processes involved in order to effectively suppress or manipulate the electron bunch during beam transport. In this presentation we provide a brief overview of typical theoretical models and their assumptions, discussing the collective dynamics of the phase space for different bunch configurations. Preliminary numerical results are presented for several different lattice designs and various bunch configurations, with the aim of providing theoretical guidance for the design of different types of accelerator beam transport lattices in the future. |
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| MOPB001 | Terahertz-Driven MeV Electron Bunch Compression and Streaking | 14 |
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| Electron bunches with ultra-short bunch length and ultra-high timing stability are crucial for various applications. To achieve these desired characteristics, there is a growing interest in employing Terahertz-driven techniques to manipulate and diagnose electron bunches. This paper presents a method capable of compressing and measuring electron bunch lengths. Theoretical and simulation results demonstrate that the bunch length of 54 is reduced to 4 fs by utilizing THz-driven resonant cavity compression, achieving a compression ratio of 13. Furthermore, we also verify the bunch compression using a terahertz-driven streak camera. | ||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB001 | |
| About • | Received ※ 28 June 2023 — Revised ※ 09 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 26 February 2024 | |
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| MOPB016 | Matching Section Optics Design for the MeV Ultrafast Electron Beam Experimental Facility | 37 |
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| This paper introduces the design and optimization of the matching section beamline for the ultrafast electron research platform at Huazhong University of Science and Technology (HUST). The matching section serves as a connection between the main beamline and the beam physics research beamline, aiming to achieve efficient and precise control over the electron beam trajectory and parameters. To evaluate its performance, particle tracking simulations using GPT software were conducted. When the beam is set at 3 MeV and 1 pC charge, the matching section is capable of compressing the bunch length to approximately 50 fs. This level of compression is crucial for ultrafast electron research applications, as it enables the study of phenomena that occur on extremely short time scales, demonstrating its effectiveness in achieving precise beam control and compression. | ||
| DOI • | reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB016 | |
| About • | Received ※ 29 June 2023 — Revised ※ 08 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 20 January 2024 | |
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