Electron-ion collider transverse instabilities due to the crab cavity fundamental impedance

Journal Article · 16 January 2025 · Physical Review Accelerators and Beams

DOI: https://doi.org/10.1103/physrevaccelbeams.28.011001 · OSTI ID:2504217

Mastoridis, T.  ^[1]; Loe, T.  ^[2]; Blaskiewicz, M.  ^[3]

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1. California Polytechnic State University, San Luis Obispo, CA (United States); California Polytechnic State University, San Luis Obispo
2. California Polytechnic State University, San Luis Obispo, CA (United States)
3. Brookhaven National Laboratory (BNL), Upton, NY (United States)

The electron-ion collider crab Cavities will present a significant transverse impedance to the beam. The low-level radio frequency system will have to reduce the crab cavity impedance to prevent transverse instabilities, while regulating the crabbing voltage and minimizing the radio frequency noise levels injected into the beam. This work presents an estimate of the crab cavity impedance in the presence of feedback and the resulting stability margins using simplified stability criteria. Generalized stability criteria are also presented in this work and are used to more accurately estimate stability margins.

• Research Organization: Brookhaven National Laboratory (BNL), Upton, NY (United States); California Polytechnic State University, San Luis Obispo, CA (United States)
• Sponsoring Organization: USDOE Office of Science (SC), High Energy Physics (HEP); USDOE Office of Science (SC), Nuclear Physics (NP)
• Grant/Contract Number: SC0012704; SC0019287
• OSTI ID: 2504217
• Report Number(s): BNL--227567-2025-JAAM
• Journal Information: Physical Review Accelerators and Beams, Journal Name: Physical Review Accelerators and Beams Journal Issue: 1 Vol. 28; ISSN 2469-9888
• Publisher: American Physical Society (APS)Copyright Statement
• Country of Publication: United States
• Language: English