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| URL | https://doi.org/10.18429/JACoW-SAP2025-THP22 |
|---|---|
| Title | Exponential sum fitting of the long-range transverse resistive-wall wakefield |
| Authors |
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| Abstract | In high-intensity storage rings, long-range transverse resistive-wall (RW) wakefield is a dominant source of coupled-bunch instability. Conventional particle tracking algorithms handling this wakefield equire storing bunch-by-bunch and turn-by-turn centroid position histories, resulting in excessive memory consumption, which leads to computational inefficiency. This study proposes fitting the long-range transverse RW wakefield through a sum of exponentials. This method eliminates the need for bunch centroid histories during tracking computations while facilitating GPU-based parallel implementation, thereby significantly enhancing computational efficiency. This work demonstrates the dependence of the fitting performance on the number of exponential functions and the fitting interval. |
| Paper | download: THP22.pdf |
| Cite | BibTeX, LaTeX, Text/Word, RIS, EndNote |
| Conference | 15th Symposium on Accelerator Physics |
| Series | |
| Location | Urumqi, China |
| Date | 02-05 Sep 2025 |
| Publisher | JACoW Publishing, Geneva, Switzerland |
| Editorial Board | Lin Bian - Editor in Chief (IHEP), Zhichu Chen (SARI), Fancong Zeng (IHEP). |
| Online ISBN | 978-3-95450-279-0 |
| Online ISSN | 3043-0208 |
| Received | 20 October 2025 |
| Revised | 07 November 2025 |
| Accepted | 10 November 2025 |
| Issued | 09 March 2026 |
| DOI | 10.18429/JACoW-SAP2025-THP22 |
| Pages | 61-64 |
| 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. |