IPAC2018 - List of Authors (Zhang, Z.)

Paper	Title	Page
THPMK083	Self-Modulation of a Relativistic Electron Beam in a Wiggler	4492
	J.P. MacArthur Stanford University, Stanford, California, USA J.P. Duris, Z. Huang, A. Marinelli, Z. Zhang SLAC, Menlo Park, California, USA
	Users at x-ray free-electron laser (FEL) facilities have shown strong interest in using single spike, coherent x-ray pulses to probe attosceond dynamics in atoms and molecules. Sub-femtosecond soft x-ray pulses may be obtained from an electron beam that has been modulated in a wiggler resonant with an external laser, the enhanced-SASE technique. We discuss a new way to produce this energy modulation, wherein the external laser is replaced by coherent radiation from the current spike on the tail of the electron beam. We calculate the modulation expected in a wiggler from both a single frequency perspective and a coherent synchrotron radiation (CSR) perspective.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPMK083
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FRXGBE1	Generation of High-Power, Tunable THz Radiation from Laser Interaction with a Relativistic Electron Beam
	Z. Zhang SLAC, Menlo Park, California, USA
	This invited talk proposes a method based on the slice energy spread modulation to generate strong subpicoseond density bunching in high-intensity relativistic electron beams. A laser pulse with periodic intensity envelope is used to modulate the slice energy spread of the electron beam, which can then be converted into density modulation after a dispersive section. It is found that the double-horn slice energy distribution of the electron beam induced by the laser modulation is very eﬀective to increase the density modulation. Since the modulation is performed on a relativistic electron beam, the process does not suﬀer from strong space charge force or coupling between phase spaces. We show in both theory and simulations that the tunable radiation from the modulated beam can cover the frequency range of 1 ∼ 20 THz with high power and narrow-band spectra. This method can be used in storage ring or even thermal-cathode injectors with high-repetition rate. Experimental results will be reviewed.
	Slides FRXGBE1 [5.968 MB]
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Paper

Title

Page

Self-Modulation of a Relativistic Electron Beam in a Wiggler

4492

J.P. MacArthur
Stanford University, Stanford, California, USA
J.P. Duris, Z. Huang, A. Marinelli, Z. Zhang
SLAC, Menlo Park, California, USA

Users at x-ray free-electron laser (FEL) facilities have shown strong interest in using single spike, coherent x-ray pulses to probe attosceond dynamics in atoms and molecules. Sub-femtosecond soft x-ray pulses may be obtained from an electron beam that has been modulated in a wiggler resonant with an external laser, the enhanced-SASE technique. We discuss a new way to produce this energy modulation, wherein the external laser is replaced by coherent radiation from the current spike on the tail of the electron beam. We calculate the modulation expected in a wiggler from both a single frequency perspective and a coherent synchrotron radiation (CSR) perspective.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-IPAC2018-THPMK083

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

FRXGBE1

Generation of High-Power, Tunable THz Radiation from Laser Interaction with a Relativistic Electron Beam

Z. Zhang
SLAC, Menlo Park, California, USA

This invited talk proposes a method based on the slice energy spread modulation to generate strong subpicoseond density bunching in high-intensity relativistic electron beams. A laser pulse with periodic intensity envelope is used to modulate the slice energy spread of the electron beam, which can then be converted into density modulation after a dispersive section. It is found that the double-horn slice energy distribution of the electron beam induced by the laser modulation is very eﬀective to increase the density modulation. Since the modulation is performed on a relativistic electron beam, the process does not suﬀer from strong space charge force or coupling between phase spaces. We show in both theory and simulations that the tunable radiation from the modulated beam can cover the frequency range of 1 ∼ 20 THz with high power and narrow-band spectra. This method can be used in storage ring or even thermal-cathode injectors with high-repetition rate. Experimental results will be reviewed.

Slides FRXGBE1 [5.968 MB]

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)