Radio-frequency cavity field measurements through free falling bead
This paper introduces a novel bead-falling measurement method for the precise and efficient mapping of electromagnetic fields within radio-frequency (rf) cavities, which are crucial components in the design of accelerators. The traditional bead-pull method, while effective, involves mechanical compl...
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| Main Authors: | , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2025-01-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.28.012001 |
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| _version_ | 1841555960900878336 |
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| author | Xiaonan Du Lars Groening |
| author_facet | Xiaonan Du Lars Groening |
| author_sort | Xiaonan Du |
| collection | DOAJ |
| description | This paper introduces a novel bead-falling measurement method for the precise and efficient mapping of electromagnetic fields within radio-frequency (rf) cavities, which are crucial components in the design of accelerators. The traditional bead-pull method, while effective, involves mechanical complexities and is prone to errors from wire perturbations. The innovative method reported here leverages the simplicity and accuracy of free-falling beads to mitigate these issues. This technique eliminates the need for a wire-pulley system, thereby simplifying the experimental setup and reducing potential mechanical errors. We detail the development and operational principles of this new method, including the design of a compact, portable measurement device that integrates a bead/droplet release system and a bead detection system linked to a vector network analyzer. The device has been tested with a three-gap buncher cavity and a scaled Alvarez-type cavity, demonstrating its ability to perform rapid, reliable field measurements under various challenging conditions, including low signal-to-noise ratios and environmental vibrations. The results confirm the method’s superiority in precision and operational efficiency, potentially setting a new standard for rf cavity diagnostics and tuning. |
| format | Article |
| id | doaj-art-307b4166f6004d5a95fa77fe3402dc98 |
| institution | Kabale University |
| issn | 2469-9888 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj-art-307b4166f6004d5a95fa77fe3402dc982025-01-07T17:07:29ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882025-01-0128101200110.1103/PhysRevAccelBeams.28.012001Radio-frequency cavity field measurements through free falling beadXiaonan DuLars GroeningThis paper introduces a novel bead-falling measurement method for the precise and efficient mapping of electromagnetic fields within radio-frequency (rf) cavities, which are crucial components in the design of accelerators. The traditional bead-pull method, while effective, involves mechanical complexities and is prone to errors from wire perturbations. The innovative method reported here leverages the simplicity and accuracy of free-falling beads to mitigate these issues. This technique eliminates the need for a wire-pulley system, thereby simplifying the experimental setup and reducing potential mechanical errors. We detail the development and operational principles of this new method, including the design of a compact, portable measurement device that integrates a bead/droplet release system and a bead detection system linked to a vector network analyzer. The device has been tested with a three-gap buncher cavity and a scaled Alvarez-type cavity, demonstrating its ability to perform rapid, reliable field measurements under various challenging conditions, including low signal-to-noise ratios and environmental vibrations. The results confirm the method’s superiority in precision and operational efficiency, potentially setting a new standard for rf cavity diagnostics and tuning.http://doi.org/10.1103/PhysRevAccelBeams.28.012001 |
| spellingShingle | Xiaonan Du Lars Groening Radio-frequency cavity field measurements through free falling bead Physical Review Accelerators and Beams |
| title | Radio-frequency cavity field measurements through free falling bead |
| title_full | Radio-frequency cavity field measurements through free falling bead |
| title_fullStr | Radio-frequency cavity field measurements through free falling bead |
| title_full_unstemmed | Radio-frequency cavity field measurements through free falling bead |
| title_short | Radio-frequency cavity field measurements through free falling bead |
| title_sort | radio frequency cavity field measurements through free falling bead |
| url | http://doi.org/10.1103/PhysRevAccelBeams.28.012001 |
| work_keys_str_mv | AT xiaonandu radiofrequencycavityfieldmeasurementsthroughfreefallingbead AT larsgroening radiofrequencycavityfieldmeasurementsthroughfreefallingbead |