Positron driven high-field terahertz waves via dielectric wakefield interaction
Advanced acceleration methods based on wakefields generated by high-energy electron bunches passing through dielectric-based structures have demonstrated >GV/m fields, paving the first steps on a path to applications such as future compact linear colliders. For a collider scenario, it is desirabl...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2022-04-01
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| Series: | Physical Review Research |
| Online Access: | http://doi.org/10.1103/PhysRevResearch.4.023065 |
| _version_ | 1797210800456204288 |
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| author | N. Majernik G. Andonian O. B. Williams B. D. O'Shea P. D. Hoang C. Clarke M. J. Hogan V. Yakimenko J. B. Rosenzweig |
| author_facet | N. Majernik G. Andonian O. B. Williams B. D. O'Shea P. D. Hoang C. Clarke M. J. Hogan V. Yakimenko J. B. Rosenzweig |
| author_sort | N. Majernik |
| collection | DOAJ |
| description | Advanced acceleration methods based on wakefields generated by high-energy electron bunches passing through dielectric-based structures have demonstrated >GV/m fields, paving the first steps on a path to applications such as future compact linear colliders. For a collider scenario, it is desirable that, in contrast with plasmas, wakefields in dielectrics do not behave differently for positron and electron bunches. In this article, we present measurements of large amplitude fields excited by positron bunches with collider-relevant parameters (energy 20 GeV and 0.7×10^{10} particles per bunch) in a 0.4 THz, cylindrically symmetric dielectric structure. Interferometric measurements of emitted coherent Cerenkov radiation permit spectral characterization of the positron-generated wakefields, which are compared to those excited by electron bunches. Statistical equivalence tests are incorporated to show the charge-sign invariance of the induced wakefield spectra. Transverse effects on positron beams resulting from off-axis excitation are examined and found to be consistent with the known linear response of the DWA system. The results are supported by numerical simulations and demonstrate high-gradient wakefield excitation in dielectrics for positron beams. |
| first_indexed | 2024-04-24T10:16:21Z |
| format | Article |
| id | doaj.art-89913926f86f4cedb2d6095f90b6b8d2 |
| institution | Directory Open Access Journal |
| issn | 2643-1564 |
| language | English |
| last_indexed | 2024-04-24T10:16:21Z |
| publishDate | 2022-04-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Research |
| spelling | doaj.art-89913926f86f4cedb2d6095f90b6b8d22024-04-12T17:20:16ZengAmerican Physical SocietyPhysical Review Research2643-15642022-04-014202306510.1103/PhysRevResearch.4.023065Positron driven high-field terahertz waves via dielectric wakefield interactionN. MajernikG. AndonianO. B. WilliamsB. D. O'SheaP. D. HoangC. ClarkeM. J. HoganV. YakimenkoJ. B. RosenzweigAdvanced acceleration methods based on wakefields generated by high-energy electron bunches passing through dielectric-based structures have demonstrated >GV/m fields, paving the first steps on a path to applications such as future compact linear colliders. For a collider scenario, it is desirable that, in contrast with plasmas, wakefields in dielectrics do not behave differently for positron and electron bunches. In this article, we present measurements of large amplitude fields excited by positron bunches with collider-relevant parameters (energy 20 GeV and 0.7×10^{10} particles per bunch) in a 0.4 THz, cylindrically symmetric dielectric structure. Interferometric measurements of emitted coherent Cerenkov radiation permit spectral characterization of the positron-generated wakefields, which are compared to those excited by electron bunches. Statistical equivalence tests are incorporated to show the charge-sign invariance of the induced wakefield spectra. Transverse effects on positron beams resulting from off-axis excitation are examined and found to be consistent with the known linear response of the DWA system. The results are supported by numerical simulations and demonstrate high-gradient wakefield excitation in dielectrics for positron beams.http://doi.org/10.1103/PhysRevResearch.4.023065 |
| spellingShingle | N. Majernik G. Andonian O. B. Williams B. D. O'Shea P. D. Hoang C. Clarke M. J. Hogan V. Yakimenko J. B. Rosenzweig Positron driven high-field terahertz waves via dielectric wakefield interaction Physical Review Research |
| title | Positron driven high-field terahertz waves via dielectric wakefield interaction |
| title_full | Positron driven high-field terahertz waves via dielectric wakefield interaction |
| title_fullStr | Positron driven high-field terahertz waves via dielectric wakefield interaction |
| title_full_unstemmed | Positron driven high-field terahertz waves via dielectric wakefield interaction |
| title_short | Positron driven high-field terahertz waves via dielectric wakefield interaction |
| title_sort | positron driven high field terahertz waves via dielectric wakefield interaction |
| url | http://doi.org/10.1103/PhysRevResearch.4.023065 |
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