We present a new method for computation of radiation spectra in the non-linear regime of operation of inverse Compton sources characterized by high laser intensities. The resulting simulations agree well with the experiments. Increasing the laser intensity changes the longitudinal velocity of the electrons during their collision, leading to considerable non-linear broadening in the scattered radiation spectra. The effects of such ponderomotive broadening are so deleterious that most inverse Compton sources either remain at low laser intensities or pay a steep price to operate at a small fraction of the physically possible peak spectral output. This ponderomotive broadening can be reduced by a suitable frequency modulation (also referred to as "chirping", which is not necessarily linear) of the incident laser pulse, thereby drastically increasing the peak spectral density. This frequency modulation, included in the new code as an optional functionality, is used in simulations to motivate the experimental implementation of this transformative technique.

Improving performance of inverse Compton sources through laser chirping / Terzic, B.; Brown, A.; Drebot, I.; Hagerman, T.; Johnson, E.; Krafft, G. A.; Maroli, C.; Petrillo, V.; Ruijter, M.. - In: EUROPHYSICS LETTERS. - ISSN 1286-4854. - 126:(2019). [10.1209/0295-5075/126/12003]

Improving performance of inverse Compton sources through laser chirping

Brown A.;Petrillo V.;Ruijter M.
2019

Abstract

We present a new method for computation of radiation spectra in the non-linear regime of operation of inverse Compton sources characterized by high laser intensities. The resulting simulations agree well with the experiments. Increasing the laser intensity changes the longitudinal velocity of the electrons during their collision, leading to considerable non-linear broadening in the scattered radiation spectra. The effects of such ponderomotive broadening are so deleterious that most inverse Compton sources either remain at low laser intensities or pay a steep price to operate at a small fraction of the physically possible peak spectral output. This ponderomotive broadening can be reduced by a suitable frequency modulation (also referred to as "chirping", which is not necessarily linear) of the incident laser pulse, thereby drastically increasing the peak spectral density. This frequency modulation, included in the new code as an optional functionality, is used in simulations to motivate the experimental implementation of this transformative technique.
Compton scattering; Thomson scattering; chirp; frequency modulation
01 Pubblicazione su rivista::01a Articolo in rivista
Improving performance of inverse Compton sources through laser chirping / Terzic, B.; Brown, A.; Drebot, I.; Hagerman, T.; Johnson, E.; Krafft, G. A.; Maroli, C.; Petrillo, V.; Ruijter, M.. - In: EUROPHYSICS LETTERS. - ISSN 1286-4854. - 126:(2019). [10.1209/0295-5075/126/12003]
File allegati a questo prodotto
File Dimensione Formato  
Terzic_Improving_2019.pdf

solo gestori archivio

Tipologia: Versione editoriale (versione pubblicata con il layout dell'editore)
Licenza: Tutti i diritti riservati (All rights reserved)
Dimensione 967.01 kB
Formato Adobe PDF
967.01 kB Adobe PDF   Visualizza/Apri   Richiedi una copia

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11573/1351404
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 10
  • ???jsp.display-item.citation.isi??? 10
social impact