Spatial-frequency features of radiation produced by a step-wise tapered undulator

Andrei Trebushinin, Svitozar Serkez, Mykola Veremchuk, Yakov Rakshun, Gianluca Geloni

Результат исследования: Научные публикации в периодических изданияхстатьярецензирование

Аннотация

A scheme to generate wide-bandwidth radiation using a step-wise tapered undulator with a segmented structure is proposed. This magnetic field configuration allows to broaden the undulator harmonic spectrum by two orders of magnitude, providing 1 keV bandwidth with spectral flux density exceeding 1016photons s-1mm-2(0.1% bandwidth)-1at 5 keV on the sample. Such a magnetic setup is applicable to superconducting devices where magnetic tapering cannot be arranged mechanically. The resulting radiation with broadband spectrum and flat-top shape may be exploited at a multipurpose beamline for scanning over the spectrum at time scales of 10-100 ms. The radiation from a segmented undulator is described analytically and derivations with numerical simulations are verified. In addition, a start-to-end simulation of an optical beamline is performed and issues related to the longitudinally distributed radiation source and its image upon focusing on the sample are addressed.

Язык оригиналаанглийский
Страницы (с-по)769-777
Число страниц9
ЖурналJournal of Synchrotron Radiation
Том28
DOI
СостояниеОпубликовано - 1 мая 2021

Предметные области OECD FOS+WOS

  • 1.03 ФИЗИЧЕСКИЕ НАУКИ И АСТРОНОМИЯ
  • 2.11.OA ИНСТРУМЕНТЫ И ИЗМЕРИТЕЛЬНЫЕ ПРИБОРЫ.
  • 1.03.SY ОПТИКА

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