Dataset Information

Control of laser plasma accelerated electrons for light sources.

ABSTRACT: With gigaelectron-volts per centimetre energy gains and femtosecond electron beams, laser wakefield acceleration (LWFA) is a promising candidate for applications, such as ultrafast electron diffraction, multistaged colliders and radiation sources (betatron, compton, undulator, free electron laser). However, for some of these applications, the beam performance, for example, energy spread, divergence and shot-to-shot fluctuations, need a drastic improvement. Here, we show that, using a dedicated transport line, we can mitigate these initial weaknesses. We demonstrate that we can manipulate the beam longitudinal and transverse phase-space of the presently available LWFA beams. Indeed, we separately correct orbit mis-steerings and minimise dispersion thanks to specially designed variable strength quadrupoles, and select the useful energy range passing through a slit in a magnetic chicane. Therefore, this matched electron beam leads to the successful observation of undulator synchrotron radiation after an 8?m transport path. These results pave the way to applications demanding in terms of beam quality.

SUBMITTER: Andre T

PROVIDER: S-EPMC5889396 | biostudies-literature | 2018 Apr

REPOSITORIES: biostudies-literature

ACCESS DATA

Publications

Control of laser plasma accelerated electrons for light sources.

André T T Andriyash I A IA Loulergue A A Labat M M Roussel E E Ghaith A A Khojoyan M M Thaury C C Valléau M M Briquez F F Marteau F F Tavakoli K K N'Gotta P P Dietrich Y Y Lambert G G Malka V V Benabderrahmane C C Vétéran J J Chapuis L L El Ajjouri T T Sebdaoui M M Hubert N N Marcouillé O O Berteaud P P Leclercq N N El Ajjouri M M Rommeluère P P Bouvet F F Duval J -P J- Kitegi C C Blache F F Mahieu B B Corde S S Gautier J J Ta Phuoc K K Goddet J P JP Lestrade A A Herbeaux C C Évain C C Szwaj C C Bielawski S S Tafzi A A Rousseau P P Smartsev S S Polack F F Dennetière D D Bourassin-Bouchet C C De Oliveira C C Couprie M-E ME

Nature communications 20180406 1

With gigaelectron-volts per centimetre energy gains and femtosecond electron beams, laser wakefield acceleration (LWFA) is a promising candidate for applications, such as ultrafast electron diffraction, multistaged colliders and radiation sources (betatron, compton, undulator, free electron laser). However, for some of these applications, the beam performance, for example, energy spread, divergence and shot-to-shot fluctuations, need a drastic improvement. Here, we show that, using a dedicated t ...[more]

PMID: 29626187

Similar Datasets

Project description:During femtosecond laser fabrication, photons are mainly absorbed by electrons, and the subsequent energy transfer from electrons to ions is of picosecond order. Hence, lattice motion is negligible within the femtosecond pulse duration, whereas femtosecond photon-electron interactions dominate the entire fabrication process. Therefore, femtosecond laser fabrication must be improved by controlling localized transient electron dynamics, which poses a challenge for measuring and controlling at the electron level during fabrication processes. Pump-probe spectroscopy presents a viable solution, which can be used to observe electron dynamics during a chemical reaction. In fact, femtosecond pulse durations are shorter than many physical/chemical characteristic times, which permits manipulating, adjusting, or interfering with electron dynamics. Hence, we proposed to control localized transient electron dynamics by temporally or spatially shaping femtosecond pulses, and further to modify localized transient materials properties, and then to adjust material phase change, and eventually to implement a novel fabrication method. This review covers our progresses over the past decade regarding electrons dynamics control (EDC) by shaping femtosecond laser pulses in micro/nanomanufacturing: (1) Theoretical models were developed to prove EDC feasibility and reveal its mechanisms; (2) on the basis of the theoretical predictions, many experiments are conducted to validate our EDC-based femtosecond laser fabrication method. Seven examples are reported, which proves that the proposed method can significantly improve fabrication precision, quality, throughput and repeatability and effectively control micro/nanoscale structures; (3) a multiscale measurement system was proposed and developed to study the fundamentals of EDC from the femtosecond scale to the nanosecond scale and to the millisecond scale; and (4) As an example of practical applications, our method was employed to fabricate some key structures in one of the 16 Chinese National S&T Major Projects, for which electron dynamics were measured using our multiscale measurement system.

Dataset Information

Control of laser plasma accelerated electrons for light sources.

Publications

Control of laser plasma accelerated electrons for light sources.

Similar Datasets

OmicsDI is part of the ELIXIR infrastructure

Tweets