Egenolf, Thilo ; Niedermayer, Uwe ; Boine-Frankenheim, Oliver (2020)
Tracking with wakefields in dielectric laser acceleration grating structures.
In: Physical Review Accelerators and Beams, 23 (5)
doi: 10.1103/physrevaccelbeams.23.054402
Article, Bibliographie
Abstract
Due to the tiny apertures of dielectric laser acceleration grating structures within the range of the optical wavelength, wakefields limit the bunch charge for relativistic electrons to a few femtocoulomb. In this paper, we present a wakefield upgrade of our six-dimensional tracking scheme DLAtrack6D in order to analyze these limitations. Simulations with CST Studio Suite provide the wake functions to calculate the kicks within each tracking step. Scaling laws and the dependency of the wake on geometrical changes are calculated. The tracking with wakefields is applied to beam and structure parameters following recently performed and planned experiments. We compare the results to analytical models and identify intensity limits due to the transverse beam breakup and strong head-tail instability. Furthermore, we reconstruct phase advance spectrograms and use them to analyze possible stabilization mechanisms.
| Item Type: | Article |
|---|---|
| Erschienen: | 2020 |
| Creators: | Egenolf, Thilo ; Niedermayer, Uwe ; Boine-Frankenheim, Oliver |
| Type of entry: | Bibliographie |
| Title: | Tracking with wakefields in dielectric laser acceleration grating structures |
| Language: | English |
| Date: | 7 May 2020 |
| Publisher: | APS Physics |
| Journal or Publication Title: | Physical Review Accelerators and Beams |
| Volume of the journal: | 23 |
| Issue Number: | 5 |
| DOI: | 10.1103/physrevaccelbeams.23.054402 |
| Abstract: | Due to the tiny apertures of dielectric laser acceleration grating structures within the range of the optical wavelength, wakefields limit the bunch charge for relativistic electrons to a few femtocoulomb. In this paper, we present a wakefield upgrade of our six-dimensional tracking scheme DLAtrack6D in order to analyze these limitations. Simulations with CST Studio Suite provide the wake functions to calculate the kicks within each tracking step. Scaling laws and the dependency of the wake on geometrical changes are calculated. The tracking with wakefields is applied to beam and structure parameters following recently performed and planned experiments. We compare the results to analytical models and identify intensity limits due to the transverse beam breakup and strong head-tail instability. Furthermore, we reconstruct phase advance spectrograms and use them to analyze possible stabilization mechanisms. |
| Divisions: | 18 Department of Electrical Engineering and Information Technology 18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields > Accelerator Physics 18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields |
| Date Deposited: | 17 Feb 2023 07:54 |
| Last Modified: | 27 Jun 2023 16:10 |
| PPN: | 509088988 |
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