Beam loading compensation of traveling wave linacs through the time dependence of the rf drive
Beam loading in traveling-wave linear accelerating structures leads to unacceptable spread of particle energies across an extended train of bunched particles due to beam-induced field and dispersion. Methods for modulating the rf power driving linacs are effective at reducing energy spread, but for...
| Main Authors: | , |
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| Format: | Article |
| Language: | English |
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American Physical Society
2011-09-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.14.090402 |
| _version_ | 1818316277362458624 |
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| author | Nathan Towne James Rose |
| author_facet | Nathan Towne James Rose |
| author_sort | Nathan Towne |
| collection | DOAJ |
| description | Beam loading in traveling-wave linear accelerating structures leads to unacceptable spread of particle energies across an extended train of bunched particles due to beam-induced field and dispersion. Methods for modulating the rf power driving linacs are effective at reducing energy spread, but for general linacs do not have a clear analytic foundation. We report here methods for calculating how to modulate the rf drive in arbitrarily nonuniform traveling-wave linacs within the convective-transport (power-diffusion) model that results in no additional energy spread due to beam loading (but not dispersion). Varying group velocity, loss factor, and cell quality factor within a structure, and nonzero particle velocity, are handled. |
| first_indexed | 2024-12-13T09:18:52Z |
| format | Article |
| id | doaj.art-713b116e08c243f1ad633a946da9ff0e |
| institution | Directory Open Access Journal |
| issn | 1098-4402 |
| language | English |
| last_indexed | 2024-12-13T09:18:52Z |
| publishDate | 2011-09-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Special Topics. Accelerators and Beams |
| spelling | doaj.art-713b116e08c243f1ad633a946da9ff0e2022-12-21T23:52:47ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022011-09-0114909040210.1103/PhysRevSTAB.14.090402Beam loading compensation of traveling wave linacs through the time dependence of the rf driveNathan TowneJames RoseBeam loading in traveling-wave linear accelerating structures leads to unacceptable spread of particle energies across an extended train of bunched particles due to beam-induced field and dispersion. Methods for modulating the rf power driving linacs are effective at reducing energy spread, but for general linacs do not have a clear analytic foundation. We report here methods for calculating how to modulate the rf drive in arbitrarily nonuniform traveling-wave linacs within the convective-transport (power-diffusion) model that results in no additional energy spread due to beam loading (but not dispersion). Varying group velocity, loss factor, and cell quality factor within a structure, and nonzero particle velocity, are handled.http://doi.org/10.1103/PhysRevSTAB.14.090402 |
| spellingShingle | Nathan Towne James Rose Beam loading compensation of traveling wave linacs through the time dependence of the rf drive Physical Review Special Topics. Accelerators and Beams |
| title | Beam loading compensation of traveling wave linacs through the time dependence of the rf drive |
| title_full | Beam loading compensation of traveling wave linacs through the time dependence of the rf drive |
| title_fullStr | Beam loading compensation of traveling wave linacs through the time dependence of the rf drive |
| title_full_unstemmed | Beam loading compensation of traveling wave linacs through the time dependence of the rf drive |
| title_short | Beam loading compensation of traveling wave linacs through the time dependence of the rf drive |
| title_sort | beam loading compensation of traveling wave linacs through the time dependence of the rf drive |
| url | http://doi.org/10.1103/PhysRevSTAB.14.090402 |
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