Driver-witness electron beam acceleration in dielectric mm-scale capillaries
We investigated a corrugated mm-scale capillary as a compact accelerating structure in the driver-witness acceleration scheme, and suggested a methodology to measure the acceleration of the witness bunch. The accelerating fields produced by the driver bunch and the energy spread of the witness bunch...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2018-05-01
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| Series: | Physical Review Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevAccelBeams.21.051301 |
| _version_ | 1811234082134163456 |
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| author | K. Lekomtsev A. Aryshev A. A. Tishchenko M. Shevelev A. Lyapin S. Boogert P. Karataev N. Terunuma J. Urakawa |
| author_facet | K. Lekomtsev A. Aryshev A. A. Tishchenko M. Shevelev A. Lyapin S. Boogert P. Karataev N. Terunuma J. Urakawa |
| author_sort | K. Lekomtsev |
| collection | DOAJ |
| description | We investigated a corrugated mm-scale capillary as a compact accelerating structure in the driver-witness acceleration scheme, and suggested a methodology to measure the acceleration of the witness bunch. The accelerating fields produced by the driver bunch and the energy spread of the witness bunch in a corrugated capillary and in a capillary with a constant inner radius were measured and simulated for both on-axis and off-axis beam propagation. Our simulations predicted a change in the accelerating field structure for the corrugated capillary. Also, an approximately twofold increase of the witness bunch energy gain on the first accelerating cycle was expected for both capillaries for the off-axis beam propagation. These results were confirmed in the experiment, and the maximum measured acceleration of 170 keV/m at 20 pC driver beam charge was achieved for off-axis beam propagation. The driver bunch showed an increase in energy spread of up to 11%, depending on the capillary geometry and beam propagation, with a suppression of the longitudinal energy spread in the witness bunch of up to 15%. |
| first_indexed | 2024-04-12T11:30:36Z |
| format | Article |
| id | doaj.art-1974f855484346489c4bb464ebd61804 |
| institution | Directory Open Access Journal |
| issn | 2469-9888 |
| language | English |
| last_indexed | 2024-04-12T11:30:36Z |
| publishDate | 2018-05-01 |
| publisher | American Physical Society |
| record_format | Article |
| series | Physical Review Accelerators and Beams |
| spelling | doaj.art-1974f855484346489c4bb464ebd618042022-12-22T03:35:01ZengAmerican Physical SocietyPhysical Review Accelerators and Beams2469-98882018-05-0121505130110.1103/PhysRevAccelBeams.21.051301Driver-witness electron beam acceleration in dielectric mm-scale capillariesK. LekomtsevA. AryshevA. A. TishchenkoM. ShevelevA. LyapinS. BoogertP. KarataevN. TerunumaJ. UrakawaWe investigated a corrugated mm-scale capillary as a compact accelerating structure in the driver-witness acceleration scheme, and suggested a methodology to measure the acceleration of the witness bunch. The accelerating fields produced by the driver bunch and the energy spread of the witness bunch in a corrugated capillary and in a capillary with a constant inner radius were measured and simulated for both on-axis and off-axis beam propagation. Our simulations predicted a change in the accelerating field structure for the corrugated capillary. Also, an approximately twofold increase of the witness bunch energy gain on the first accelerating cycle was expected for both capillaries for the off-axis beam propagation. These results were confirmed in the experiment, and the maximum measured acceleration of 170 keV/m at 20 pC driver beam charge was achieved for off-axis beam propagation. The driver bunch showed an increase in energy spread of up to 11%, depending on the capillary geometry and beam propagation, with a suppression of the longitudinal energy spread in the witness bunch of up to 15%.http://doi.org/10.1103/PhysRevAccelBeams.21.051301 |
| spellingShingle | K. Lekomtsev A. Aryshev A. A. Tishchenko M. Shevelev A. Lyapin S. Boogert P. Karataev N. Terunuma J. Urakawa Driver-witness electron beam acceleration in dielectric mm-scale capillaries Physical Review Accelerators and Beams |
| title | Driver-witness electron beam acceleration in dielectric mm-scale capillaries |
| title_full | Driver-witness electron beam acceleration in dielectric mm-scale capillaries |
| title_fullStr | Driver-witness electron beam acceleration in dielectric mm-scale capillaries |
| title_full_unstemmed | Driver-witness electron beam acceleration in dielectric mm-scale capillaries |
| title_short | Driver-witness electron beam acceleration in dielectric mm-scale capillaries |
| title_sort | driver witness electron beam acceleration in dielectric mm scale capillaries |
| url | http://doi.org/10.1103/PhysRevAccelBeams.21.051301 |
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