High gradient limits due to single bunch beam breakup in a collinear dielectric wakefield accelerator
A study into the maximum acceleration gradient, E_{z}^{max}, in a collinear dielectric wakefield accelerator due to single bunch beam breakup (SBBU) is presented. The longitudinal wakefield is proportional to charge over radius squared (E_{z}∼Q/a^{2}) which implies small a is favorable for fixed Q....
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
American Physical Society
2014-09-01
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| Series: | Physical Review Special Topics. Accelerators and Beams |
| Online Access: | http://doi.org/10.1103/PhysRevSTAB.17.091302 |
| Summary: | A study into the maximum acceleration gradient, E_{z}^{max}, in a collinear dielectric wakefield accelerator due to single bunch beam breakup (SBBU) is presented. The longitudinal wakefield is proportional to charge over radius squared (E_{z}∼Q/a^{2}) which implies small a is favorable for fixed Q. However, when the transverse wakefield (E_{⊥}∼Q/a^{3}) is also considered then the SBBU instability severely limits the charge that can pass through a long structure as required for a large transfer of energy from the drive bunch to the witness bunch and hence limits the sustained acceleration that can be obtained. |
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| ISSN: | 1098-4402 |