Speaker
Description
The 28 MHz cavities, currently used in the Relativistic Heavy Ion Collider (RHIC), will be modified into 24.6 MHz cavities to be used in the Hadron Storage Ring (HSR) for the future Electron-Ion Collider (EIC). One major difference between the EIC and the current RHIC system is that the EIC HSR will host proton beams with 10 times shorter bunch length, 3 to 10 shorter bunch spacing, and up to 3 times higher beam current than those in RHIC. While this will allow for greater luminosity, it will also introduce challenges for the LLRF system in the form of stronger transient beam-loading. To counteract these effects, digital implementations of a feedfoward (FFWD) and One-Turn Delay Feedback (OTFB) have been developed for an FPGA. Furthermore, using a newly developed digital network analyzer, software has been created that allows for a straightforward method of tuning the LLRF systems for maximum cavity impedance reduction. These developments will be evaluated with beam in the 28 MHz cavities during the 2025 RHIC Run.
| Abstract Category | Measurement and Control |
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