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Simulation of DLA grating structures in the frequency domain

Egenolf, T. ; Boine-Frankenheim, O. ; Niedermayer, U. (2024)
Simulation of DLA grating structures in the frequency domain.
In: Journal of Physics: Conference Series, 2017, 874 (1)
doi: 10.26083/tuprints-00020910
Article, Secondary publication, Publisher's Version

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Item Type: Article
Type of entry: Secondary publication
Title: Simulation of DLA grating structures in the frequency domain
Language: English
Date: 7 May 2024
Place of Publication: Darmstadt
Year of primary publication: 2017
Place of primary publication: Bristol
Publisher: IOP Publishing
Journal or Publication Title: Journal of Physics: Conference Series
Volume of the journal: 874
Issue Number: 1
Collation: 5 Seiten
DOI: 10.26083/tuprints-00020910
Corresponding Links:
Origin: Secondary publication DeepGreen

Dielectric laser accelerators (DLA) driven by ultrashort laser pulses can reach orders of magnitude larger gradients than contemporary RF electron accelerators. A new implemented field solver based on the finite element method in the frequency domain allows the efficient calculation of the structure constant, i.e. the ratio of energy gain to laser peak amplitude. We present the maximization of this ratio as a parameter study looking at a single grating period only. Based on this optimized shape the entire design of a beta-matched grating is completed in an iterative process. The period length of a beta-matched grating increases due to the increasing velocity of the electron when a subrelativistic beam is accelerated. The determination of the optimal length of each grating period thus requires the knowledge of the energy gain within all so far crossed periods. Furthermore, we outline to reverse the excitation in the presented solver for beam coupling impedance calculations and an estimation of the beam loading intensity limit.

Identification Number: Artikel-ID: 012040
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-209106
Additional Information:

8th International Particle Accelerator Conference 14–19 May 2017, Copenhagen, Denmark

Classification DDC: 500 Science and mathematics > 530 Physics
600 Technology, medicine, applied sciences > 621.3 Electrical engineering, electronics
Divisions: 18 Department of Electrical Engineering and Information Technology > Institute for Accelerator Science and Electromagnetic Fields
Date Deposited: 07 May 2024 13:43
Last Modified: 17 May 2024 08:11
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/20910
PPN: 518021521
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