Next Generation LLRF Control and Monitoring System for S-Band Linear Accelerators
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| Main Authors: | , , , , , |
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| Format: | Preprint |
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2025
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| _version_ | 1866908383392563200 |
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| author | Liu, Chao Dhar, Ankur Snively, Emma Othman, Mohamed Herbst, Ryan Nanni, Emilio A. |
| author_facet | Liu, Chao Dhar, Ankur Snively, Emma Othman, Mohamed Herbst, Ryan Nanni, Emilio A. |
| contents | The low-level RF (LLRF) systems for S-band linear accelerating structures are typically implemented with heterodyne base architectures. We have developed and characterized the next generation LLRF (NG-LLRF) based on the RF system-on-chip (RFSoC) for C-band accelerating structures, and the platform delivered the pulse-to-pulse fluctuation levels considerably better than the requirement of the targeted applications. The NG-LLRF system uses the direct RF sampling technique of the RFSoC, which significantly simplified the architecture compared to the conventional LLRF. We have extended the frequency range of the NG-LLRF to S-band and experimented with different RFSoC devices and system designs to meet the more stringent requirements for S-band LLRF applications. In this paper, the characterization results of the platform with different system architectures will be summarized and the high-power test results of the NG-LLRF with the S-band accelerating structure in the Next Linear Collider Test Accelerator (NLCTA) test facility at the SLAC National Accelerator Laboratory will be presented and analyzed. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2505_22876 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Next Generation LLRF Control and Monitoring System for S-Band Linear Accelerators Liu, Chao Dhar, Ankur Snively, Emma Othman, Mohamed Herbst, Ryan Nanni, Emilio A. Accelerator Physics Instrumentation and Methods for Astrophysics The low-level RF (LLRF) systems for S-band linear accelerating structures are typically implemented with heterodyne base architectures. We have developed and characterized the next generation LLRF (NG-LLRF) based on the RF system-on-chip (RFSoC) for C-band accelerating structures, and the platform delivered the pulse-to-pulse fluctuation levels considerably better than the requirement of the targeted applications. The NG-LLRF system uses the direct RF sampling technique of the RFSoC, which significantly simplified the architecture compared to the conventional LLRF. We have extended the frequency range of the NG-LLRF to S-band and experimented with different RFSoC devices and system designs to meet the more stringent requirements for S-band LLRF applications. In this paper, the characterization results of the platform with different system architectures will be summarized and the high-power test results of the NG-LLRF with the S-band accelerating structure in the Next Linear Collider Test Accelerator (NLCTA) test facility at the SLAC National Accelerator Laboratory will be presented and analyzed. |
| title | Next Generation LLRF Control and Monitoring System for S-Band Linear Accelerators |
| topic | Accelerator Physics Instrumentation and Methods for Astrophysics |
| url | https://arxiv.org/abs/2505.22876 |