Beam-energy-spread minimization using cell-timing optimization
Beam energy spread, and related beam motion, increase the difficulty in tuning for multipulse radiographic experiments at the dual-axis radiographic hydrodynamic test facility’s axis-II linear induction accelerator (LIA). In this article, we describe an optimization method to reduce the energy sprea...
| Main Authors: | , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2012-04-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.15.040403 |
| _version_ | 1818968863118721024 |
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| author | C. R. Rose C. Ekdahl M. Schulze |
| author_facet | C. R. Rose C. Ekdahl M. Schulze |
| author_sort | C. R. Rose |
| collection | DOAJ |
| description | Beam energy spread, and related beam motion, increase the difficulty in tuning for multipulse radiographic experiments at the dual-axis radiographic hydrodynamic test facility’s axis-II linear induction accelerator (LIA). In this article, we describe an optimization method to reduce the energy spread by adjusting the timing of the cell voltages (both unloaded and loaded), either advancing or retarding, such that the injector voltage and summed cell voltages in the LIA result in a flatter energy profile. We developed a nonlinear optimization routine which accepts as inputs the 74 cell-voltage, injector voltage, and beam current waveforms. It optimizes cell timing per user-selected groups of cells and outputs timing adjustments, one for each of the selected groups. To verify the theory, we acquired and present data for both unloaded and loaded cell-timing optimizations. For the unloaded cells, the preoptimization baseline energy spread was reduced by 34% and 31% for two shots as compared to baseline. For the loaded-cell case, the measured energy spread was reduced by 49% compared to baseline. |
| first_indexed | 2024-12-20T14:11:27Z |
| format | Article |
| id | doaj.art-c1dafcd8a47747bc9d94abe98321948a |
| institution | Directory Open Access Journal |
| issn | 1098-4402 |
| language | English |
| last_indexed | 2024-12-20T14:11:27Z |
| publishDate | 2012-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Special Topics. Accelerators and Beams |
| spelling | doaj.art-c1dafcd8a47747bc9d94abe98321948a2022-12-21T19:38:07ZengAmerican Physical SocietyPhysical Review Special Topics. Accelerators and Beams1098-44022012-04-0115404040310.1103/PhysRevSTAB.15.040403Beam-energy-spread minimization using cell-timing optimizationC. R. RoseC. EkdahlM. SchulzeBeam energy spread, and related beam motion, increase the difficulty in tuning for multipulse radiographic experiments at the dual-axis radiographic hydrodynamic test facility’s axis-II linear induction accelerator (LIA). In this article, we describe an optimization method to reduce the energy spread by adjusting the timing of the cell voltages (both unloaded and loaded), either advancing or retarding, such that the injector voltage and summed cell voltages in the LIA result in a flatter energy profile. We developed a nonlinear optimization routine which accepts as inputs the 74 cell-voltage, injector voltage, and beam current waveforms. It optimizes cell timing per user-selected groups of cells and outputs timing adjustments, one for each of the selected groups. To verify the theory, we acquired and present data for both unloaded and loaded cell-timing optimizations. For the unloaded cells, the preoptimization baseline energy spread was reduced by 34% and 31% for two shots as compared to baseline. For the loaded-cell case, the measured energy spread was reduced by 49% compared to baseline.http://doi.org/10.1103/PhysRevSTAB.15.040403 |
| spellingShingle | C. R. Rose C. Ekdahl M. Schulze Beam-energy-spread minimization using cell-timing optimization Physical Review Special Topics. Accelerators and Beams |
| title | Beam-energy-spread minimization using cell-timing optimization |
| title_full | Beam-energy-spread minimization using cell-timing optimization |
| title_fullStr | Beam-energy-spread minimization using cell-timing optimization |
| title_full_unstemmed | Beam-energy-spread minimization using cell-timing optimization |
| title_short | Beam-energy-spread minimization using cell-timing optimization |
| title_sort | beam energy spread minimization using cell timing optimization |
| url | http://doi.org/10.1103/PhysRevSTAB.15.040403 |
| work_keys_str_mv | AT crrose beamenergyspreadminimizationusingcelltimingoptimization AT cekdahl beamenergyspreadminimizationusingcelltimingoptimization AT mschulze beamenergyspreadminimizationusingcelltimingoptimization |