Measurements of undulator radiation power noise and comparison with<i>ab initio</i>calculations

Lobach, Ihar; Nagaitsev, Sergei; Lebedev, Valeri; Romanov, A. V.; Stancari, G.; Valishev, Alexander; Halavanau, Aliaksei; Huang, Zhirong; Kim, Kwang‐Je

doi:10.1103/physrevaccelbeams.24.040701

Cited by 9 publications

(5 citation statements)

References 28 publications

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“…There have been studies on the statistical properties of the radiation in FELs (Saldin et al, 1998) and also storage-ring-based synchrotron radiation sources, for example the recent seminal work of Lobach et al (2020Lobach et al ( , 2021a. Rich information about the electron beam is embedded in the radiation fluctuations, or more generally the statistical properties of the radiation.…”

Section: Statistical Properties Of Radiationmentioning

confidence: 99%

Average and statistical properties of coherent radiation from steady-state microbunching

Deng¹,

Zhang²,

Pan³

et al. 2023

J Synchrotron Radiat

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A promising accelerator light source mechanism called steady-state microbunching (SSMB) is being actively studied. With the combination of strong coherent radiation from microbunching and high repetition rate of a storage ring, high-average-power narrow-band radiation can be anticipated from an SSMB storage ring, with wavelengths ranging from THz to soft X-ray. Such a novel light source could provide new opportunities for accelerator photon science like high-resolution angle-resolved photoemission spectroscopy and industrial applications like extreme ultraviolet (EUV) lithography. In this paper, a theoretical and numerical study of the average and statistical properties of coherent radiation from SSMB are presented. The results show that 1 kW average-power quasi-continuous-wave EUV radiation can be obtained from an SSMB ring provided that an average current of 1 A and a microbunch train with bunch length of 3 nm can be formed at the radiator which is assumed to be an undulator. Together with the narrow-band feature, the EUV photon flux can reach 6 × 1015 photons s−1 within a 0.1 meV energy bandwidth, which is three orders of magnitude higher than that in a conventional synchrotron source and is appealing for fundamental condensed matter physics and other research. In this theoretical investigation, we have generalized the definition and derivation of the transverse form factor of an electron beam which can quantify the impact of its transverse size on coherent radiation. In particular, it has been shown that the narrow-band feature of SSMB radiation is strongly correlated with the finite transverse electron beam size. Considering the pointlike nature of electrons and quantum nature of radiation, the coherent radiation fluctuates from microbunch to microbunch, or for a single microbunch from turn to turn. Some important results concerning the statistical properties of SSMB radiation are presented, with a brief discussion on its potential applications, for example the beam diagnostics. The presented work is of value for the development of SSMB to better serve potential synchrotron radiation users. In addition, this also sheds light on understanding the radiation characteristics of free-electron lasers, coherent harmonic generation, etc.

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Section: Statistical Properties Of Radiationmentioning

confidence: 99%

Average and statistical properties of coherent radiation from steady-state microbunching

Deng¹,

Zhang²,

Pan³

et al. 2023

J Synchrotron Radiat

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“…In the coming years, the IOTA ring will be upgraded with a proton injector and an electron lens/cooler [31]. The research with protons and electrons will focus on nonlinear beam optics studies [32], investigation of space-charge effects [33], realization of Electron Lens with its broad research program [31], continuation of the OSC program [34], and photon science opportunities [35]. A significant required upgrade to the FAST facility is the addition of a laser system to enable research into electron-based coherent radiation generation and activities synergistic with advanced acceleration technologies.…”

Section: Fastmentioning

confidence: 99%

U.S. advanced and novel accelerator beam test facilities

Clarke¹,

Esarey²,

Geddes³

et al. 2022

J. Inst.

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Demonstrating the viability of Advanced Accelerator Concepts (AAC) relies on experimental validation. Over the last three decades, the U.S. has maintained a portfolio of advanced and novel accelerator test facilities to support research critical to AAC. The facilities have enabled pioneering developments in a wide variety of beam and accelerator physics, including plasma-wakefield and structure-wakefield acceleration. This paper provides an overview of the current portfolio of U.S. facilities possessing charged particle drive beams with high energies, on the order of tens of joules per pulse, or drive lasers with high peak powers, on the order of a petawatt, and are actively conducting AAC research.

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“…The experimental demonstration of these concepts can significantly impact the design and performance of high-intensity accelerators for nuclear and particle physics. Several other topics are being studied in IOTA, such as the statistical properties of undulator radiation [12][13][14] and the experimental demonstration of optical stochastic cooling [15]. In addition, IOTA has the capability of storing single electrons or a small known number of electrons [16,17].…”

Section: The Iota Storage Ring and Beam Physics Programmentioning

confidence: 99%