WEPB076

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URL	https://doi.org/10.18429/JACoW-IPAC2025-WEPB076
Title	RF design for optimal high-gradient performance of a four-quadrant structure for the ASTERIX project
Authors	Z. Huang, Y. Wei University of Science and Technology of China A. Gallo, A. Liedl, A. Giribono, A. Falone, B. Spataro, C. Vaccarezza, D. Alesini, F. Cardelli, G. Silvi, G. Mauro, G. Torrisi, L. Piersanti, L. Faillace, M. Bellaveglia, M. Migliorati, S. Bini, S. Pioli Istituto Nazionale di Fisica Nucleare E. Chiadroni, M. Carillo Istituto Nazionale di Fisica Nucleare, Laboratori Nazionali di Frascati, Sapienza University of Rome G. Sorbello University of Catania L. Ficcadenti Sapienza University of Rome L. Giuliano, L. Palumbo Istituto Nazionale di Fisica Nucleare, Sapienza University of Rome T. Abe, Y. Higashi High Energy Accelerator Research Organization V. Dolgashev SLAC National Accelerator Laboratory
Abstract	The ASTERIX project, funded by CSN5 and proposed at INFN-LNF, aims to demonstrate a practical, meter-long X-band RF structure for linear accelerators made of hard copper and divided into four quadrants. The prototypes will be constructed by TIG welding. In the first year of the feasibility study, we will design the RF cavities for two full structures working at single-bunch and multi-bunch operation. In this paper, structures operating at single-bunch mode for ASTERIX are numerically studied. The surface field enhancements of the quadrant-type accelerating structures are the most challenging issue to be resolved. The geometry near the gap between four quadrants is carefully optimized and obtain low surface field while maintaining high RF performance.
Paper	download: WEPB076.pdf
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Conference	16th International Particle Accelerator Conference
Series
Location	Taipei, Taiwan
Date	01-06 Jun 2025
Publisher	JACoW Publishing, Geneva, Switzerland
Editorial Board	* Ming-Chyuan Lin - National Synchrotron Radiation Research Center * Yoichi Sato - KEK * Jui-Che Huang - National Synchrotron Radiation Research Center * David Button - Australian Nuclear Science and Technology Organisation * Ping-Shun Chuang - National Synchrotron Radiation Research Center
Online ISBN	978-3-95450-248-6
Online ISSN	2673-5490
Received	28 May 2025
Revised	05 June 2025
Accepted	05 June 2025
Issued	05 November 2025
DOI	10.18429/JACoW-IPAC2025-WEPB076
Pages	1904-1906
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.