Linear microbunching analysis for recirculation machines
Microbunching instability (MBI) has been one of the most challenging issues in designs of magnetic chicanes for short-wavelength free-electron lasers or linear colliders, as well as those of transport lines for recirculating or energy-recovery-linac machines. To quantify MBI for a recirculating mach...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2016-11-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.19.114401 |
| _version_ | 1828372992315359232 |
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| author | C.-Y. Tsai D. Douglas R. Li C. Tennant |
| author_facet | C.-Y. Tsai D. Douglas R. Li C. Tennant |
| author_sort | C.-Y. Tsai |
| collection | DOAJ |
| description | Microbunching instability (MBI) has been one of the most challenging issues in designs of magnetic chicanes for short-wavelength free-electron lasers or linear colliders, as well as those of transport lines for recirculating or energy-recovery-linac machines. To quantify MBI for a recirculating machine and for more systematic analyses, we have recently developed a linear Vlasov solver and incorporated relevant collective effects into the code, including the longitudinal space charge, coherent synchrotron radiation, and linac geometric impedances, with extension of the existing formulation to include beam acceleration. In our code, we semianalytically solve the linearized Vlasov equation for microbunching amplification factor for an arbitrary linear lattice. In this study we apply our code to beam line lattices of two comparative isochronous recirculation arcs and one arc lattice preceded by a linac section. The resultant microbunching gain functions and spectral responses are presented, with some results compared to particle tracking simulation by elegant (M. Borland, APS Light Source Note No. LS-287, 2002). These results demonstrate clearly the impact of arc lattice design on the microbunching development. The underlying physics with inclusion of those collective effects is elucidated and the limitation of the existing formulation is also discussed. |
| first_indexed | 2024-04-14T07:12:04Z |
| format | Article |
| id | doaj.art-f9348fd95a344de0b03df60cd1a90fa7 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-04-14T07:12:04Z |
| publishDate | 2016-11-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-f9348fd95a344de0b03df60cd1a90fa72022-12-22T02:06:24ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882016-11-01191111440110.1103/PhysRevAccelBeams.19.114401Linear microbunching analysis for recirculation machinesC.-Y. TsaiD. DouglasR. LiC. TennantMicrobunching instability (MBI) has been one of the most challenging issues in designs of magnetic chicanes for short-wavelength free-electron lasers or linear colliders, as well as those of transport lines for recirculating or energy-recovery-linac machines. To quantify MBI for a recirculating machine and for more systematic analyses, we have recently developed a linear Vlasov solver and incorporated relevant collective effects into the code, including the longitudinal space charge, coherent synchrotron radiation, and linac geometric impedances, with extension of the existing formulation to include beam acceleration. In our code, we semianalytically solve the linearized Vlasov equation for microbunching amplification factor for an arbitrary linear lattice. In this study we apply our code to beam line lattices of two comparative isochronous recirculation arcs and one arc lattice preceded by a linac section. The resultant microbunching gain functions and spectral responses are presented, with some results compared to particle tracking simulation by elegant (M. Borland, APS Light Source Note No. LS-287, 2002). These results demonstrate clearly the impact of arc lattice design on the microbunching development. The underlying physics with inclusion of those collective effects is elucidated and the limitation of the existing formulation is also discussed.http://doi.org/10.1103/PhysRevAccelBeams.19.114401 |
| spellingShingle | C.-Y. Tsai D. Douglas R. Li C. Tennant Linear microbunching analysis for recirculation machines Physical Review Accelerators and Beams |
| title | Linear microbunching analysis for recirculation machines |
| title_full | Linear microbunching analysis for recirculation machines |
| title_fullStr | Linear microbunching analysis for recirculation machines |
| title_full_unstemmed | Linear microbunching analysis for recirculation machines |
| title_short | Linear microbunching analysis for recirculation machines |
| title_sort | linear microbunching analysis for recirculation machines |
| url | http://doi.org/10.1103/PhysRevAccelBeams.19.114401 |
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