Pre-wave zone effect in transition and diffraction radiation: Problems and solutions

Karataev, P.

doi:10.1016/j.physleta.2005.07.027

Cited by 25 publications

(34 citation statements)

References 19 publications

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“…The result of the calculation is illustrated in Fig.2. One should note that this model does not take into account the pre-wave zone effect [14] and the diffraction effect when the light propagates through the output vacuum viewport [15]. Both effects result in broadening of the DR angular distribution.…”

Section: B Cdr Spatial Distributionmentioning

confidence: 99%

Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Aryshev

Araki

Fukuda

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

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We present an initial test of a new type of a pre-bunched beam pumped free electron maser based on Stimulated Coherent Diffraction Radiation (SCDR) generated in an open resonator. An ultrafast Schottky Barrier Diode (time response < 1 ns) has enabled to investigate the properties of the radiation stored in the cavity as well as the intrinsic properties of the cavity itself. We observed a turn-by-turn SCDR generated by a multibunch beam. When the cavity length was exactly a half of the bunch spacing a clear resonance was observed. Moreover, turn-by-turn measurements revealed the cavity quality factor of 72.88, which was rather high for an open resonator in the wavelength range of 3 − 5 mm. An exponential growth of the photon intensity as a function of the number of bunches was also demonstrated.

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Section: B Cdr Spatial Distributionmentioning

confidence: 99%

Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Aryshev

Araki

Fukuda

et al. 2014

Nuclear Instruments and Methods in Physics Research Section A:

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“…The prevalent method for TR (DR) focusing is to use external focusing components such as lenses and/or paraboloidal mirrors [9,10]. However, the use of such components might be complicated or even impossible in some applications such as soft x-ray generation.…”

Section: Introductionmentioning

confidence: 99%

“…However, the use of such components might be complicated or even impossible in some applications such as soft x-ray generation. In [9,11,12] the authors proposed to use paraboloidal targets in order to focus the TR (DR) without complicated external optical components. In [11] the authors performed simulations using the surface current model, while in [9,12] the authors used the Huygens model.…”

Section: Introductionmentioning

confidence: 99%

“…In [9,11,12] the authors proposed to use paraboloidal targets in order to focus the TR (DR) without complicated external optical components. In [11] the authors performed simulations using the surface current model, while in [9,12] the authors used the Huygens model. The latter one is based on the replacement of the real electron field by the field of virtual photons known as the Weizsacker-Williams method (applied to the DR problem in [13]) and the Huygens reflection of these photons from the TR (DR) target.…”

Section: Introductionmentioning

confidence: 99%

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Observation of focusing effect in optical transition and diffraction radiation generated from a spherical target

Сухих

Aryshev

Karataev

et al. 2009

Phys. Rev. ST Accel. Beams

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For the first time the focusing effect in optical transition and diffraction radiation generated by 1.28 GeV electrons in a tilted spherical target has been observed experimentally. A comparison of detected as well as simulated radiation spatial distributions produced by a flat and a spherical target has been made. It is shown that the application of such targets has allowed us to increase the radiation spectralspatial density at the target focus without applying any additional focusing devices.

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“…Far field conditions can only be considered valid for distances from the source much larger than γ 2 λ/2π, which implies that beam diagnostics based on TR radiation using long wavelength or for very high beam energies will be perturbed by prewave zone effects [6,7]. A mitigation technique consisting of putting the detector in the back focal plane of a focusing lens [8] was then proposed to suppress prewave zone uncertainties and an experimental validation was performed successfully soon after at ATF-KEK [9].…”

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confidence: 99%

Experimental Observation of “Shadowing” in Optical Transition Radiation

et al. 2018

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We report the observation of shadowing between two optical transition radiation (OTR) sources from a 205 MeV electron beam. The total optical intensity is measured as a function of the distance d between the sources, covering the range 0 < d < 4L v , where L v is the formation length of the particles. Data show that the total optical intensity starts decreasing due to shadowing when d approaches L v until it becomes undetectable for very short distances d/L v → 0. A model based solely on interference between the two OTR sources is in good agreement with experimental data. To the knowledge of the authors this is the first systematic experimental observation of shadowing in OTR.

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Pre-wave zone effect in transition and diffraction radiation: Problems and solutions

Cited by 25 publications

References 19 publications

Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Observation of the stimulated coherent diffraction radiation in an open resonator at LUCX facility

Observation of focusing effect in optical transition and diffraction radiation generated from a spherical target

Experimental Observation of “Shadowing” in Optical Transition Radiation

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