Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source
The RadiaBeam/SLAC dechirper, a structure consisting of pairs of flat, metallic, corrugated plates, has been installed just upstream of the undulators in the Linac Coherent Light Source (LCLS). As a dechirper, with the beam passing between the plates on axis, longitudinal wakefields are induced that...
| Main Authors: | , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2017-10-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.20.104403 |
| _version_ | 1818290756319707136 |
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| author | Johann Zemella Karl Bane Alan Fisher Marc Guetg Zhirong Huang Richard Iverson Patrick Krejcik Alberto Lutman Timothy Maxwell Alexander Novokhatski Gennady Stupakov Zhen Zhang Mark Harrison Marcos Ruelas |
| author_facet | Johann Zemella Karl Bane Alan Fisher Marc Guetg Zhirong Huang Richard Iverson Patrick Krejcik Alberto Lutman Timothy Maxwell Alexander Novokhatski Gennady Stupakov Zhen Zhang Mark Harrison Marcos Ruelas |
| author_sort | Johann Zemella |
| collection | DOAJ |
| description | The RadiaBeam/SLAC dechirper, a structure consisting of pairs of flat, metallic, corrugated plates, has been installed just upstream of the undulators in the Linac Coherent Light Source (LCLS). As a dechirper, with the beam passing between the plates on axis, longitudinal wakefields are induced that can remove unwanted energy chirp in the beam. However, with the beam passing off axis, strong transverse wakes are also induced. This mode of operation has already been used for the production of intense, multicolor photon beams using the fresh-slice technique, and is being used to develop a diagnostic for attosecond bunch length measurements. Here we measure, as a function of offset, the strength of the transverse wakefields that are excited between the two plates, and also for the case of the beam passing near to a single plate. We compare with analytical formulas from the literature, and find good agreement. This report presents the first systematic measurements of the transverse wake strength in a dechirper, one that has been excited by a bunch with the short pulse duration and high energy found in an x-ray free electron laser. |
| first_indexed | 2024-12-13T02:33:14Z |
| format | Article |
| id | doaj.art-eed5988dc7eb44eca840e1d8d40792d1 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-12-13T02:33:14Z |
| publishDate | 2017-10-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-eed5988dc7eb44eca840e1d8d40792d12022-12-22T00:02:28ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882017-10-01201010440310.1103/PhysRevAccelBeams.20.104403Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light SourceJohann ZemellaKarl BaneAlan FisherMarc GuetgZhirong HuangRichard IversonPatrick KrejcikAlberto LutmanTimothy MaxwellAlexander NovokhatskiGennady StupakovZhen ZhangMark HarrisonMarcos RuelasThe RadiaBeam/SLAC dechirper, a structure consisting of pairs of flat, metallic, corrugated plates, has been installed just upstream of the undulators in the Linac Coherent Light Source (LCLS). As a dechirper, with the beam passing between the plates on axis, longitudinal wakefields are induced that can remove unwanted energy chirp in the beam. However, with the beam passing off axis, strong transverse wakes are also induced. This mode of operation has already been used for the production of intense, multicolor photon beams using the fresh-slice technique, and is being used to develop a diagnostic for attosecond bunch length measurements. Here we measure, as a function of offset, the strength of the transverse wakefields that are excited between the two plates, and also for the case of the beam passing near to a single plate. We compare with analytical formulas from the literature, and find good agreement. This report presents the first systematic measurements of the transverse wake strength in a dechirper, one that has been excited by a bunch with the short pulse duration and high energy found in an x-ray free electron laser.http://doi.org/10.1103/PhysRevAccelBeams.20.104403 |
| spellingShingle | Johann Zemella Karl Bane Alan Fisher Marc Guetg Zhirong Huang Richard Iverson Patrick Krejcik Alberto Lutman Timothy Maxwell Alexander Novokhatski Gennady Stupakov Zhen Zhang Mark Harrison Marcos Ruelas Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source Physical Review Accelerators and Beams |
| title | Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source |
| title_full | Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source |
| title_fullStr | Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source |
| title_full_unstemmed | Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source |
| title_short | Measurements of wake-induced electron beam deflection in a dechirper at the Linac Coherent Light Source |
| title_sort | measurements of wake induced electron beam deflection in a dechirper at the linac coherent light source |
| url | http://doi.org/10.1103/PhysRevAccelBeams.20.104403 |
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