SAP2023 - List of Authors (Li, Z.Z.)

Paper	Title	Page
MOIAA01	Progress of steady-state microbunching research
	R.K. Li, H.B. Chen, L.W. Chen, X.J. Deng, Y.C. Du, P.W. Huang, W.-H. Huang, Z.Z. Li, X. Liu, Z. Pan, J.R. Shi, C.-X. Tang, H. Wang, L.X. Yan TUB, Beijing, People’s Republic of China
	Funding: Work supported by the National Key Research and Development Program of China No. 2022YFA1603400 and the Tsinghua University Initiative Scientific Research Program No. 20197050028, 20191081195. Steady-state microbunching (SSMB) is a new concept radiation-generation mechanism that utilizes laser and a specially designed magnetic lattice to create and maintain fine structures in a high-quality electron beam for coherent light emission [1]. The SSMB concept combines major advantages of conventional synchrotron light sources and linac-based free-electron lasers. It opens up a rich field for beam dynamics research and holds tremendous potential as one of the candidate options for next-generation light source for advanced semiconductor fabrication. The proof-of-principle demonstration experiment of SSMB has been accomplished [2]. R&D on a complete dedicated SSMB facility is currently underway [3]. In this talk, we will report on the progress on the beam dynamics design and optimization, as well as the key components including the laser enhancement cavity and electron injector of a SSMB light source. [1] Phys. Rev. Lett. 105, 154801 (2010) [2] Nature 590, 576¿579 (2021). [3] Acta Phys. Sin. 71, 152901 (2022).
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MOPB037	Generalized Longitudinal Strong Focusing: A Ring-Based Beam Manipulation Technique	85
	Z.Z. Li, X.J. Deng, Z. Pan, C.-X. Tang TUB, Beijing, People’s Republic of China A. Chao SLAC, Menlo Park, California, USA
	Generalized longitudinal strong focusing (GLSF), a ring-based beam manipulation technique, has been proposed to generate steady-state, nanometer-long electron bunches in laser-driven storage rings. Coherent EUV radiation can thus be produced with greatly enhanced power and photon flux, benefiting a wide range of scientific and industrial communities. The GLSF mechanism invokes precise transverse-longitudinal coupling dynamics and exploits the ultralow vertical beam emittance. In a GLSF ring, kW-level coherent EUV radiation is attainable.
DOI •	reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB037
About •	Received ※ 28 June 2023 — Revised ※ 08 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 20 June 2024
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MOPB039	Low-Alpha Storage Ring Design for Steady-State Microbunching to Generate EUV Radiation	88
	Z. Pan, A. Chao, X.J. Deng, W.-H. Huang, Z.Z. Li, C.-X. Tang TUB, Beijing, People’s Republic of China
	A new concept is proposed for minimizing the longitudinal emittance of a low momentum compaction factor (low-alpha) storage ring which has the capability to stably store sub-femtosecond electron bunches for the first time. This storage ring is designed for Steady-State microbunching (SSMB) to generate kW level average power EUV radiation. The proposed design approach can be applied to any quasi-isochronous storage rings to yield very high radiation power due to longitudinal coherence of the radiation. We obtain an optimal lattice design by minimizing global and local momentum compaction factors simultaneously and the result of single-particle tracking shows that the electron beam with equilibrium rms bunch length of about 40 nm can be stored in this ring. Nonlinear dynamics is studied for this lattice.
DOI •	reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB039
About •	Received ※ 03 July 2023 — Revised ※ 08 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 31 December 2023
Cite •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Page

MOIAA01

Progress of steady-state microbunching research

R.K. Li, H.B. Chen, L.W. Chen, X.J. Deng, Y.C. Du, P.W. Huang, W.-H. Huang, Z.Z. Li, X. Liu, Z. Pan, J.R. Shi, C.-X. Tang, H. Wang, L.X. Yan
TUB, Beijing, People’s Republic of China

Funding: Work supported by the National Key Research and Development Program of China No. 2022YFA1603400 and the Tsinghua University Initiative Scientific Research Program No. 20197050028, 20191081195.
Steady-state microbunching (SSMB) is a new concept radiation-generation mechanism that utilizes laser and a specially designed magnetic lattice to create and maintain fine structures in a high-quality electron beam for coherent light emission [1]. The SSMB concept combines major advantages of conventional synchrotron light sources and linac-based free-electron lasers. It opens up a rich field for beam dynamics research and holds tremendous potential as one of the candidate options for next-generation light source for advanced semiconductor fabrication. The proof-of-principle demonstration experiment of SSMB has been accomplished [2]. R&D on a complete dedicated SSMB facility is currently underway [3]. In this talk, we will report on the progress on the beam dynamics design and optimization, as well as the key components including the laser enhancement cavity and electron injector of a SSMB light source.
[1] Phys. Rev. Lett. 105, 154801 (2010)
[2] Nature 590, 576¿579 (2021).
[3] Acta Phys. Sin. 71, 152901 (2022).

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reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPB037

Generalized Longitudinal Strong Focusing: A Ring-Based Beam Manipulation Technique

85

Z.Z. Li, X.J. Deng, Z. Pan, C.-X. Tang
TUB, Beijing, People’s Republic of China
A. Chao
SLAC, Menlo Park, California, USA

Generalized longitudinal strong focusing (GLSF), a ring-based beam manipulation technique, has been proposed to generate steady-state, nanometer-long electron bunches in laser-driven storage rings. Coherent EUV radiation can thus be produced with greatly enhanced power and photon flux, benefiting a wide range of scientific and industrial communities. The GLSF mechanism invokes precise transverse-longitudinal coupling dynamics and exploits the ultralow vertical beam emittance. In a GLSF ring, kW-level coherent EUV radiation is attainable.

DOI •

reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB037

About •

Received ※ 28 June 2023 — Revised ※ 08 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 20 June 2024

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

MOPB039

Low-Alpha Storage Ring Design for Steady-State Microbunching to Generate EUV Radiation

88

Z. Pan, A. Chao, X.J. Deng, W.-H. Huang, Z.Z. Li, C.-X. Tang
TUB, Beijing, People’s Republic of China

A new concept is proposed for minimizing the longitudinal emittance of a low momentum compaction factor (low-alpha) storage ring which has the capability to stably store sub-femtosecond electron bunches for the first time. This storage ring is designed for Steady-State microbunching (SSMB) to generate kW level average power EUV radiation. The proposed design approach can be applied to any quasi-isochronous storage rings to yield very high radiation power due to longitudinal coherence of the radiation. We obtain an optimal lattice design by minimizing global and local momentum compaction factors simultaneously and the result of single-particle tracking shows that the electron beam with equilibrium rms bunch length of about 40 nm can be stored in this ring. Nonlinear dynamics is studied for this lattice.

DOI •

reference for this paper ※ doi:10.18429/JACoW-SAP2023-MOPB039

About •

Received ※ 03 July 2023 — Revised ※ 08 July 2023 — Accepted ※ 11 July 2023 — Issued ※ 31 December 2023

Cite •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)