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Title: Direct Measurement of Sub-10 fs Relativistic Electron Beams with Ultralow Emittance

Authors:
; ; ; ; ;
Publication Date:
Sponsoring Org.:
USDOE
OSTI Identifier:
1351699
Grant/Contract Number:
SC0009914
Resource Type:
Journal Article: Publisher's Accepted Manuscript
Journal Name:
Physical Review Letters
Additional Journal Information:
Journal Volume: 118; Journal Issue: 15; Related Information: CHORUS Timestamp: 2017-04-12 22:14:23; Journal ID: ISSN 0031-9007
Publisher:
American Physical Society
Country of Publication:
United States
Language:
English

Citation Formats

Maxson, Jared, Cesar, David, Calmasini, Giacomo, Ody, Alexander, Musumeci, Pietro, and Alesini, David. Direct Measurement of Sub-10 fs Relativistic Electron Beams with Ultralow Emittance. United States: N. p., 2017. Web. doi:10.1103/PhysRevLett.118.154802.
Maxson, Jared, Cesar, David, Calmasini, Giacomo, Ody, Alexander, Musumeci, Pietro, & Alesini, David. Direct Measurement of Sub-10 fs Relativistic Electron Beams with Ultralow Emittance. United States. doi:10.1103/PhysRevLett.118.154802.
Maxson, Jared, Cesar, David, Calmasini, Giacomo, Ody, Alexander, Musumeci, Pietro, and Alesini, David. Wed . "Direct Measurement of Sub-10 fs Relativistic Electron Beams with Ultralow Emittance". United States. doi:10.1103/PhysRevLett.118.154802.
@article{osti_1351699,
title = {Direct Measurement of Sub-10 fs Relativistic Electron Beams with Ultralow Emittance},
author = {Maxson, Jared and Cesar, David and Calmasini, Giacomo and Ody, Alexander and Musumeci, Pietro and Alesini, David},
abstractNote = {},
doi = {10.1103/PhysRevLett.118.154802},
journal = {Physical Review Letters},
number = 15,
volume = 118,
place = {United States},
year = {Wed Apr 12 00:00:00 EDT 2017},
month = {Wed Apr 12 00:00:00 EDT 2017}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record at 10.1103/PhysRevLett.118.154802

Citation Metrics:
Cited by: 15works
Citation information provided by
Web of Science

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  • The Linac Coherent Light Source (LCLS) is an x-ray free-electron laser project presently in a commissioning phase at the SLAC National Accelerator Laboratory. We report here on very low-emittance measurements made at low bunch charge, and a few femtosecond bunch length produced by the LCLS bunch compressors. Start-to-end simulations associated with these beam parameters show the possibilities of generating hundreds of GW at 1.5 A ring x-ray wavelength and nearly a single longitudinally coherent spike at 1.5 nm with 2-fs duration.
  • We describe a very simple physical model that allows the analysis of high-order harmonic generation in gases when the pumping laser beam has an intensity profile that is not Gaussian but truncated Bessel. This is the typical experimental condition when sub-10-fs pump-laser pulses, generated by the hollow fiber compression technique, are used. This model is based on the analysis of the phase-matching conditions for the harmonic generation process revisited in view of the new spatial mode of the fundamental beam. In particular, the role of the atomic dipole phase and the geometric phase terms are evidenced both for harmonics generatedmore » in the plateau and in the cutoff spectral regions. The influence of dispersion introduced by free electrons produced by laser ionization has also been discussed in some detail. Spatial patterns of far-field harmonics are then obtained by means of a simplified algorithm which allows one to avoid the numerical integration of the harmonic beam propagation equation. Experimental spatial distributions and divergence angles of high-order harmonics generated in Ne with 7-fs titanium-sapphire pulses are compared with numerical simulations in various experimental conditions. The agreement between measurements and calculated results is found to be very satisfactory.« less
  • The beam matrix of a picosecond long slice of an electron bunch was measured. A short slice is selected out of an energy chirped beam by a slit in a dispersive region. The emittance is measured using the quadrupole scan technique. We observe the process of emittance compensation of the beam by repeating the measurement for various values of the compensating solenoid and for several slices. {copyright} {ital 1996 The American Physical Society.}
  • The paper is devoted to study electron screening effect influence on the rate of d(d, n){sup 3}He reaction in the ultralow deuteron collision energy range in the deuterated polyethylene (CD{sub 2}), frozen heavy water (D{sub 2}O) and deuterated metals (ZrD{sub 2} and TiD{sub 2}). The ZrD{sub 2} and TiD{sub 2} targets were fabricated via magnetron sputtering of titanium and zirconium in gas (deuterium) environment. The experiments have been carried out using high-current plasma pulsed accelerator with forming of inverse Z pinch (HCEIRAS, Russia) and pulsed Hall plasma accelerator (NPI at TPU, Russia). The detection of neutrons with energy of 2.5MeVmore » from dd reaction was done with plastic scintillation spectrometers. As a result of the experiments the energy dependences of astrophysical S factor for the dd reaction in the deuteron collision energy range of 2-7 keV and the values of the electron screening potential U{sub e} of interacting deuterons have been measured for the indicated above target: U{sub e}(CD{sub 2}) Less-Than-Or-Slanted-Equal-To 40 eV; U{sub e}(D{sub 2}O) Less-Than-Or-Slanted-Equal-To 26 eV; U{sub e}(ZrD{sub 2}) = 157 {+-} 43 eV; U{sub e}(TiD{sub 2}) = 125{+-}34 eV. The value of astrophysical S factor, corresponding to the deuteron collision energy equal to zero, in the experiments with D{sub 2}O target is found: S{sub b}(0) = 58.6 {+-} 3.6 keV b. The paper compares our results with other available published experimental and calculated data.« less
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