Sub-millimeter Bunch Length Non-invasive Diagnostic Based on the Diffraction and Cherenkov Radiation

Shevelev, M.; Deng, Haixiao; Потылицын, А. П.; Naumenko, G. A.; Zhang, Jin‐Lin; Lu, SH; Gogolev, S.Yu.; Shkitov, D. A.

doi:10.1088/1742-6596/357/1/012023

Cited by 5 publications

(4 citation statements)

References 5 publications

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“…Electromagnetic radiation emitted in the millimeter and submillimeter (i.e., terahertz) range, in particular, is commonly used in many experiments to explore the microscopic structure of matter [1,2] and straightforward exploited as a high-resolution monitor to infer the inner properties (both longitudinal and transverse shape) of the bunches that generated it [3][4][5][6]. The main formation mechanisms, namely, synchrotron [7,8], transition [9,10], diffraction [11][12][13], Smith-Purcell [14][15][16], and Vavilov-Cherenkov [17,18], have been widely investigated so far. It is well known that all such kinds of processes arise from the field that is radiated when a charged particle undergoes acceleration [19], i.e., a variation of its velocity (in direction and/or modulo) due to an external field or to the crossing of the boundary between two different media [20].…”

Section: Introductionmentioning

confidence: 99%

Electro-Optical Detection of Coherent Radiation Induced by Relativistic Electron Bunches in the Near and Far Fields

et al. 2018

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Coherent radiation produced by relativistic charged bunches is nowadays of great interest for useroriented applications and high-resolution diagnostics. Here we present experimental results obtained by using a temporal monitor based on the electro-optical sampling that allows us to reveal the features of the radiation emitted in terahertz range by ultrashort electron bunches moving in proximity to a nonlinear crystal. We investigate the radiation properties both in near-and far-field conditions by employing electron beams accelerated by a conventional photoinjector and through laser-plasma interactions. Our results indicate that the emitted radiation moves collinearly with the beam in one case, while its properties resemble those of the classical Cherenkov radiation in a second case.

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Section: Introductionmentioning

confidence: 99%

Electro-Optical Detection of Coherent Radiation Induced by Relativistic Electron Bunches in the Near and Far Fields

et al. 2018

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“…To analyze the nature of the radiation generated in a fiber the radiation spectrum at the output of fiber was measured using an interferometer with the division of the wave front (see [10]). The scheme of measurement is shown in Fig.…”

Section: Spectral Characteristics Of Radiation From Fibersmentioning

confidence: 99%

Coherent radiation of relativistic electrons in dielectric fibers

Naumenko

Потылицын

Bleko

et al. 2015

Nuclear Instruments and Methods in Physics Research Section B:

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“…To our knowledge and despite its great potential, coherent Cherenkov diffraction radiation (CChDR) has not been exploited for beam diagnostic purposes [17], and even if many groups working with short bunches have been using in the past coherent radiation, the detection systems were mainly based on coherent transition radiation (CTR) [18][19][20][21][22], coherent diffraction radiation (CDR) [23], coherent Smith Purcell radiation [24] or electro-optical sampling (EOS) [25].…”

Section: Introductionmentioning

confidence: 99%

Noninvasive bunch length measurements exploiting Cherenkov diffraction radiation

Curcio

Bergamaschi

Corsini

et al. 2020

Phys. Rev. Accel. Beams

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We present the observation and the detailed investigation of coherent Cherenkov diffraction radiation (CChDR) in terms of spectral-angular characteristics. Electromagnetic simulations have been performed to optimize the design of a prismatic dielectric radiator and the performance of a detection system with the aim of providing longitudinal beam diagnostics. Successful experimental validations have been organized on the CLEAR and the CLARA facilities based at CERN and Daresbury laboratory respectively. With ps to sub-ps long electron bunches, the emitted radiation spectra extend up to the THz frequency range. Bunch length measurements based on CChDR have been compared to longitudinal bunch profiles obtained using a radio frequency deflecting cavity or coherent transition radiation (CTR). The retrieval of the temporal profile of both Gaussian and non-Gaussian bunches has also been demonstrated. The proposed detection scheme paves the way to a new kind of beam instrumentation, simple and compact for monitoring short bunches of charged particles, particularly well-adapted to novel Published by the American Physical Society under the terms of the Creative Commons Attribution 4.0 International license. Further distribution of this work must maintain attribution to the author(s) and the published article's title, journal citation, and DOI.

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Sub-millimeter Bunch Length Non-invasive Diagnostic Based on the Diffraction and Cherenkov Radiation

Cited by 5 publications

References 5 publications

Electro-Optical Detection of Coherent Radiation Induced by Relativistic Electron Bunches in the Near and Far Fields

Electro-Optical Detection of Coherent Radiation Induced by Relativistic Electron Bunches in the Near and Far Fields

Coherent radiation of relativistic electrons in dielectric fibers

Noninvasive bunch length measurements exploiting Cherenkov diffraction radiation

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