Enregistré dans:
| Auteurs principaux: | , , , , , , , |
|---|---|
| Format: | Preprint |
| Publié: |
2025
|
| Sujets: | |
| Accès en ligne: | https://arxiv.org/abs/2501.02780 |
| Tags: |
Ajouter un tag
Pas de tags, Soyez le premier à ajouter un tag!
|
| _version_ | 1866915092161888256 |
|---|---|
| author | Gu, Weihang Zha, Hao Shi, Jiaru Jiang, Yuliang Liu, Jiayang Lin, Xiancai Liu, Focheng Chen, Huaibi |
| author_facet | Gu, Weihang Zha, Hao Shi, Jiaru Jiang, Yuliang Liu, Jiayang Lin, Xiancai Liu, Focheng Chen, Huaibi |
| contents | Tsinghua University has designed an X-band (11.424 GHz) slow-wave parallel-coupling accelerating structure, and demonstrated the high performance of the over-coupled structure operating with ultrashort pulse. In this study, we redesigned a 40-ns structure with 10 cells, tailored to the specifications of a high-power experimental platform, and provided a detailed analysis of the experimental results. Unexpected bead-pull results were observed during the cold testing, which we attribute to inter-cavity coupling. To explain these results, a multi-cell coupling circuit model was proposed and analyzed. High-power testing was conducted on the TPOT-X platform, and the highest gradient achieved was 130 MV/m after $1.1*10^7$ conditioning pulses. Compared to conventional multi-cavity high-gradient structures, the distributed power feeding system offers a shorter conditioning period and demonstrates the potential to achieve higher accelerating gradients under short-pulse operation. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2501_02780 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Design, fabrication and test of parallel-coupled slow-wave high-gradient structure for ultrashort input power pulses Gu, Weihang Zha, Hao Shi, Jiaru Jiang, Yuliang Liu, Jiayang Lin, Xiancai Liu, Focheng Chen, Huaibi Accelerator Physics Tsinghua University has designed an X-band (11.424 GHz) slow-wave parallel-coupling accelerating structure, and demonstrated the high performance of the over-coupled structure operating with ultrashort pulse. In this study, we redesigned a 40-ns structure with 10 cells, tailored to the specifications of a high-power experimental platform, and provided a detailed analysis of the experimental results. Unexpected bead-pull results were observed during the cold testing, which we attribute to inter-cavity coupling. To explain these results, a multi-cell coupling circuit model was proposed and analyzed. High-power testing was conducted on the TPOT-X platform, and the highest gradient achieved was 130 MV/m after $1.1*10^7$ conditioning pulses. Compared to conventional multi-cavity high-gradient structures, the distributed power feeding system offers a shorter conditioning period and demonstrates the potential to achieve higher accelerating gradients under short-pulse operation. |
| title | Design, fabrication and test of parallel-coupled slow-wave high-gradient structure for ultrashort input power pulses |
| topic | Accelerator Physics |
| url | https://arxiv.org/abs/2501.02780 |