WEP34

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URL	https://doi.org/10.18429/JACoW-IBIC2024-WEP34
Title	Design of an S-band parallel-coupled transverse deflecting cavity with variable polarization for multi-dimensional phase space diagnostics in photoinjectors
Authors	J. Shao, H. Qizhang, L. Wei, W. Zhang, Z. Li Institute of Advanced Science Facilities H. Zha, H. Chen, J. Shi Tsinghua University in Beijing H. Ding, J. Yang, J. Sun, X. Yang, Y. Yu Dalian Institute of Chemical Physics
Abstract	Beam quality from photoinjectors is crucial for lasing in Free Electron Laser (FEL) facilities. While phase space measurement are usually limited to 2D with conventional methods, the recently-developed transverse deflecting cavities (TDCs) with variable polarization provide the capability to measure multi-dimensional phase space information. Such information could guide the improvement of beamline setup for optimal lasing performance. We therefore propose an S-band parallel-coupled TDC, in which two chains that deflect beam horizontally and vertically are independently fed by waveguides and variable polarization can be obtained by adjusting their relative amplitude and phase. This design offers several advantages, including tunability, single-frequency operation, compactness, and high shunt impedance. In this manuscript, physical and mechanical design of this TDC as well as the planned proof-of-principle experiment will be presented in detail.
Paper	download: WEP34.pdf
Cite	BibTeX, LaTeX, Text/Word, RIS, EndNote
Conference	Proc. 13th International Beam Instrumentation Conference
Series
Location	Beijing
Date	09-13 Sep 2024
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	Jianshe Cao (IHEP), Junhui Yue (IHEP), Lin Bian (IHEP), Ivan Andrian (Elettra-Sincrotrone Trieste S.C.p.A.), Volker RW Schaa (GSI), Zhichu Chen (SARI)
Online ISBN	978-3-95450-249-3
Online ISSN	2673-5350
Received	06 September 2024
Revised	08 September 2024
Accepted	08 September 2024
Issued	11 December 2024
DOI	10.18429/JACoW-IBIC2024-WEP34
Pages	343-346
Copyright	Published by JACoW Publishing under the terms of the Creative Commons Attribution 4.0 license. Any further distribution of this work must maintain attribution to the author(s), the published article's title, publisher, and DOI.