Down-ramp injection and independently controlled acceleration of electrons in a tailored laser wakefield accelerator
(2015) In Physical Review Special Topics. Accelerators and Beams 18(7).- Abstract
- We report on a study on controlled injection of electrons into the accelerating phase of a plasma wakefield accelerator by tailoring the target density distribution using two independent sources of gas. The tailored density distribution is achieved experimentally by inserting a narrow nozzle, with an orifice diameter of only 400 mu m, into a jet of gas supplied from a 2 mm diameter nozzle. The combination of these two nozzles is used to create two regions of different density connected by a density gradient. Using this setup we show independent control of the charge and energy distribution of the bunches of accelerated electron as well as decreased shot-to-shot fluctuations in these quantities compared to self-injection in a single gas... (More)
- We report on a study on controlled injection of electrons into the accelerating phase of a plasma wakefield accelerator by tailoring the target density distribution using two independent sources of gas. The tailored density distribution is achieved experimentally by inserting a narrow nozzle, with an orifice diameter of only 400 mu m, into a jet of gas supplied from a 2 mm diameter nozzle. The combination of these two nozzles is used to create two regions of different density connected by a density gradient. Using this setup we show independent control of the charge and energy distribution of the bunches of accelerated electron as well as decreased shot-to-shot fluctuations in these quantities compared to self-injection in a single gas jet. Although the energy spectra are broad after injection, simulations show that further acceleration acts to compress the energy distribution and to yield peaked energy spectra. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/7790745
- author
- Hansson, Martin LU ; Aurand, Bastian LU ; Davoine, X. ; Ekerfelt, Henrik LU ; Svensson, Kristoffer LU ; Persson, Anders LU ; Wahlström, Claes-Göran LU and Lundh, O.
- organization
- publishing date
- 2015
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Physical Review Special Topics. Accelerators and Beams
- volume
- 18
- issue
- 7
- article number
- 071303
- publisher
- American Physical Society
- external identifiers
-
- wos:000357647200001
- scopus:84940399161
- ISSN
- 1098-4402
- DOI
- 10.1103/PhysRevSTAB.18.071303
- language
- English
- LU publication?
- yes
- id
- 83af0634-9d89-4afa-9c63-1ff3d49f55b4 (old id 7790745)
- date added to LUP
- 2016-04-01 13:35:03
- date last changed
- 2022-03-21 19:19:29
@article{83af0634-9d89-4afa-9c63-1ff3d49f55b4, abstract = {{We report on a study on controlled injection of electrons into the accelerating phase of a plasma wakefield accelerator by tailoring the target density distribution using two independent sources of gas. The tailored density distribution is achieved experimentally by inserting a narrow nozzle, with an orifice diameter of only 400 mu m, into a jet of gas supplied from a 2 mm diameter nozzle. The combination of these two nozzles is used to create two regions of different density connected by a density gradient. Using this setup we show independent control of the charge and energy distribution of the bunches of accelerated electron as well as decreased shot-to-shot fluctuations in these quantities compared to self-injection in a single gas jet. Although the energy spectra are broad after injection, simulations show that further acceleration acts to compress the energy distribution and to yield peaked energy spectra.}}, author = {{Hansson, Martin and Aurand, Bastian and Davoine, X. and Ekerfelt, Henrik and Svensson, Kristoffer and Persson, Anders and Wahlström, Claes-Göran and Lundh, O.}}, issn = {{1098-4402}}, language = {{eng}}, number = {{7}}, publisher = {{American Physical Society}}, series = {{Physical Review Special Topics. Accelerators and Beams}}, title = {{Down-ramp injection and independently controlled acceleration of electrons in a tailored laser wakefield accelerator}}, url = {{http://dx.doi.org/10.1103/PhysRevSTAB.18.071303}}, doi = {{10.1103/PhysRevSTAB.18.071303}}, volume = {{18}}, year = {{2015}}, }