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MO3A9 |
Comissioning Progress and Advanced FEL Experiments at the SXFEL Facility | |
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| The Shanghai soft X-ray Free-Electron Laser facility (SXFEL) is the first X-ray FEL facility in China. The construction of the SXFEL facility was finished in 2022. The output photon energy of the SXFEL can cover the whole water window range. Except for the self-amplified spontaneous emission, various seeding technques have also been adopted for improving the performances of the SXFEL. Here we presents an overview of the SXFEL facility, including the layout and design, construction status, commissioning progress and future plans on advanced FEL experiments. | ||
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Slides MO3A9 [4.688 MB] | |
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| TU4P08 | Design and Commissioning of the Beam Switchyard for the SXFEL-UF | 91 |
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| As an important measure of improving the efficiency and usability of X-ray free electron laser facilities, parallel operation of multiple undulator lines realized by a beam switchyard has become a standard configuration in the recent built XFEL facilities. SXFEL-UF, the first soft X-ray free electron laser user facility in China, has finished construction and commissioning recently. The electron beams from the linac are separated and delivered alternately to the two parallel undulator beam lines through a beam switchyard. A stable and fast kicker magnet is used to achieve bunch-by-bunch separation. Optics measures are applied to mitigate the impact of various collective effects, such as coherent synchrotron radiation and micro-bunching instability, on the beam quality after passing through the deflection line of the beam switchyard. In this study, the comprehensive physical design of the beam switchyard is described and the latest results of its commissioning process are presented. | ||
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Poster TU4P08 [4.643 MB] | |
| DOI • | reference for this paper ※ doi:10.18429/JACoW-FLS2023-TU4P08 | |
| About • | Received ※ 23 August 2023 — Revised ※ 30 August 2023 — Accepted ※ 31 August 2023 — Issued ※ 02 December 2023 | |
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WE3A4 |
Energy Recovery Linac Based Multi-pointing Fully Coherent Light Source | |
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| Energy recovery linac (ERL) holds great promise for generating high repetition-rate and high brightness electron beams. In this paper, we consider the combination of ERL with the recently proposed anglerangular-dispersion induced microbunching technique to generate fully coherent radiation pulses with high average brightness and tunable pulse length. Besides, we design a multiplexed emitting system, which consists of multi-bend achromats (MBAs), matching sections and radiators to support multi-beamline operation in the long straight section of the ERL. Theory and simulation have been carried out and the results indicate that the microbunching and beam quality maintains well after four times of bending, indicating the continuously radiation with the wavelength of 13.5 nm and the peak power of 2 MW. | ||
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Slides WE3A4 [4.548 MB] | |
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TH4A1 |
Progress Towards X-ray Free-electron Laser Driven by Plasma Wakefield Accelerator at SXFEL | |
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| Free-electron lasers (FEL) are unique light source for various applications in structural biology, chemistry and condense physics. Plasma-based accelerators can provide ultrahigh accelerating gradient which is 3~4 orders of magnitude higher than conventional technology, holding the potential for a revolution in particle accelerators. This novel technology therefore has been given high expectations for the development of compact free-electron lasers. SXFEL is a single-pass FEL user facility that provides 2~10 nm radiation for fundamental and applied research. In frame of this report, we present concept and design of a large-bandwidth XFEL based on a plasma wakefield accelerator (PWFA) driven by SXFEL electron beams. An ultrabroad bandwidth is achieved by chirping the electron beam in a hollow-channel plasma and simulations demonstrate that a spectral bandwidth of up to 24% can be obtained in this scheme. We will also present the recent progress on the construction of PWFA-based XFEL experimental station at SXFEL, and the preliminary experimental results on the PWFA and FEL radiation generation. | ||
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