Electron energy increase in a laser wakefield accelerator using up-ramp plasma density profiles

Constantin Aniculaesei, Vishwa Bandhu Pathak, Hyung Taek Kim, Kyung Hwan Oh, Byung Ju Yoo, Enrico Brunetti, Yong Ha Jang, Calin Ioan Hojbota, Jung Hun Shin, Jong Ho Jeon, Seongha Cho, Myung Hoon Cho, Jae Hee Sung, Seong Ku Lee, Björn Manuel Hegelich, Chang Hee Nam

Research output: Contribution to journalArticle

Abstract

The phase velocity of the wakefield of a laser wakefield accelerator can, theoretically, be manipulated by shaping the longitudinal plasma density profile, thus controlling the parameters of the generated electron beam. We present an experimental method where using a series of shaped longitudinal plasma density profiles we increased the mean electron peak energy more than 50%, from 175 ± 1 MeV to 262 ± 10 MeV and the maximum peak energy from 182 MeV to 363 MeV. The divergence follows closely the change of mean energy and decreases from 58.9 ± 0.45 mrad to 12.6 ± 1.2 mrad along the horizontal axis and from 35 ± 0.3 mrad to 8.3 ± 0.69 mrad along the vertical axis. Particle-in-cell simulations show that a ramp in a plasma density profile can affect the evolution of the wakefield, thus qualitatively confirming the experimental results. The presented method can increase the electron energy for a fixed laser power and at the same time offer an energy tunable source of electrons.

LanguageEnglish
Article number11249
Number of pages7
JournalScientific Reports
Volume9
Issue number1
DOIs
Publication statusPublished - 2 Aug 2019

Fingerprint

Architectural Accessibility
Lasers
Electrons

Keywords

  • laser wakefield accelerator
  • plasma density
  • plasma density measurement
  • electron beam density

Cite this

Aniculaesei, Constantin ; Pathak, Vishwa Bandhu ; Kim, Hyung Taek ; Oh, Kyung Hwan ; Yoo, Byung Ju ; Brunetti, Enrico ; Jang, Yong Ha ; Hojbota, Calin Ioan ; Shin, Jung Hun ; Jeon, Jong Ho ; Cho, Seongha ; Cho, Myung Hoon ; Sung, Jae Hee ; Lee, Seong Ku ; Hegelich, Björn Manuel ; Nam, Chang Hee. / Electron energy increase in a laser wakefield accelerator using up-ramp plasma density profiles. In: Scientific Reports. 2019 ; Vol. 9, No. 1.
@article{2b481b517c234057a9b22a17a233a894,
title = "Electron energy increase in a laser wakefield accelerator using up-ramp plasma density profiles",
abstract = "The phase velocity of the wakefield of a laser wakefield accelerator can, theoretically, be manipulated by shaping the longitudinal plasma density profile, thus controlling the parameters of the generated electron beam. We present an experimental method where using a series of shaped longitudinal plasma density profiles we increased the mean electron peak energy more than 50{\%}, from 175 ± 1 MeV to 262 ± 10 MeV and the maximum peak energy from 182 MeV to 363 MeV. The divergence follows closely the change of mean energy and decreases from 58.9 ± 0.45 mrad to 12.6 ± 1.2 mrad along the horizontal axis and from 35 ± 0.3 mrad to 8.3 ± 0.69 mrad along the vertical axis. Particle-in-cell simulations show that a ramp in a plasma density profile can affect the evolution of the wakefield, thus qualitatively confirming the experimental results. The presented method can increase the electron energy for a fixed laser power and at the same time offer an energy tunable source of electrons.",
keywords = "laser wakefield accelerator, plasma density, plasma density measurement, electron beam density",
author = "Constantin Aniculaesei and Pathak, {Vishwa Bandhu} and Kim, {Hyung Taek} and Oh, {Kyung Hwan} and Yoo, {Byung Ju} and Enrico Brunetti and Jang, {Yong Ha} and Hojbota, {Calin Ioan} and Shin, {Jung Hun} and Jeon, {Jong Ho} and Seongha Cho and Cho, {Myung Hoon} and Sung, {Jae Hee} and Lee, {Seong Ku} and Hegelich, {Bj{\"o}rn Manuel} and Nam, {Chang Hee}",
year = "2019",
month = "8",
day = "2",
doi = "10.1038/s41598-019-47677-5",
language = "English",
volume = "9",
journal = "Scientific Reports",
issn = "2045-2322",
number = "1",

}

Aniculaesei, C, Pathak, VB, Kim, HT, Oh, KH, Yoo, BJ, Brunetti, E, Jang, YH, Hojbota, CI, Shin, JH, Jeon, JH, Cho, S, Cho, MH, Sung, JH, Lee, SK, Hegelich, BM & Nam, CH 2019, 'Electron energy increase in a laser wakefield accelerator using up-ramp plasma density profiles' Scientific Reports, vol. 9, no. 1, 11249. https://doi.org/10.1038/s41598-019-47677-5

Electron energy increase in a laser wakefield accelerator using up-ramp plasma density profiles. / Aniculaesei, Constantin; Pathak, Vishwa Bandhu; Kim, Hyung Taek; Oh, Kyung Hwan; Yoo, Byung Ju; Brunetti, Enrico; Jang, Yong Ha; Hojbota, Calin Ioan; Shin, Jung Hun; Jeon, Jong Ho; Cho, Seongha; Cho, Myung Hoon; Sung, Jae Hee; Lee, Seong Ku; Hegelich, Björn Manuel; Nam, Chang Hee.

In: Scientific Reports, Vol. 9, No. 1, 11249, 02.08.2019.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Electron energy increase in a laser wakefield accelerator using up-ramp plasma density profiles

AU - Aniculaesei, Constantin

AU - Pathak, Vishwa Bandhu

AU - Kim, Hyung Taek

AU - Oh, Kyung Hwan

AU - Yoo, Byung Ju

AU - Brunetti, Enrico

AU - Jang, Yong Ha

AU - Hojbota, Calin Ioan

AU - Shin, Jung Hun

AU - Jeon, Jong Ho

AU - Cho, Seongha

AU - Cho, Myung Hoon

AU - Sung, Jae Hee

AU - Lee, Seong Ku

AU - Hegelich, Björn Manuel

AU - Nam, Chang Hee

PY - 2019/8/2

Y1 - 2019/8/2

N2 - The phase velocity of the wakefield of a laser wakefield accelerator can, theoretically, be manipulated by shaping the longitudinal plasma density profile, thus controlling the parameters of the generated electron beam. We present an experimental method where using a series of shaped longitudinal plasma density profiles we increased the mean electron peak energy more than 50%, from 175 ± 1 MeV to 262 ± 10 MeV and the maximum peak energy from 182 MeV to 363 MeV. The divergence follows closely the change of mean energy and decreases from 58.9 ± 0.45 mrad to 12.6 ± 1.2 mrad along the horizontal axis and from 35 ± 0.3 mrad to 8.3 ± 0.69 mrad along the vertical axis. Particle-in-cell simulations show that a ramp in a plasma density profile can affect the evolution of the wakefield, thus qualitatively confirming the experimental results. The presented method can increase the electron energy for a fixed laser power and at the same time offer an energy tunable source of electrons.

AB - The phase velocity of the wakefield of a laser wakefield accelerator can, theoretically, be manipulated by shaping the longitudinal plasma density profile, thus controlling the parameters of the generated electron beam. We present an experimental method where using a series of shaped longitudinal plasma density profiles we increased the mean electron peak energy more than 50%, from 175 ± 1 MeV to 262 ± 10 MeV and the maximum peak energy from 182 MeV to 363 MeV. The divergence follows closely the change of mean energy and decreases from 58.9 ± 0.45 mrad to 12.6 ± 1.2 mrad along the horizontal axis and from 35 ± 0.3 mrad to 8.3 ± 0.69 mrad along the vertical axis. Particle-in-cell simulations show that a ramp in a plasma density profile can affect the evolution of the wakefield, thus qualitatively confirming the experimental results. The presented method can increase the electron energy for a fixed laser power and at the same time offer an energy tunable source of electrons.

KW - laser wakefield accelerator

KW - plasma density

KW - plasma density measurement

KW - electron beam density

UR - http://www.scopus.com/inward/record.url?scp=85070770491&partnerID=8YFLogxK

U2 - 10.1038/s41598-019-47677-5

DO - 10.1038/s41598-019-47677-5

M3 - Article

VL - 9

JO - Scientific Reports

T2 - Scientific Reports

JF - Scientific Reports

SN - 2045-2322

IS - 1

M1 - 11249

ER -