11.0, SPECTRA can be run as a "web-application", as well as the stand-alone desktop application. Coherent mode decomposition of partially coherent SR.
Rigorous brilliance evaluation of SR based on Wigner function representation.More precise estimation of radiation in the near-field zone.Far-field approximation for fast evaluation of radiation.Radiation power after passing through a filter composed of various material.The peak brilliance, flux, and radiation power as a function of the gap and K value.Beam size, angular divergence, coherent flux as a function of the gap and K value.Spatial dependence of the flux and power densities.Energy spectra of the brilliance, flux density, partial flux after passing through a slit, and total flux.Although the brilliance estimation by the Gaussian approximation is still available for compatibility with the older versions, it is referred to as GA.Brilliance (Gaussian-Approximated) and is distinguished from the rigorous estimation. In version 10.0, rigorous estimation of brilliance based on the Wigner function method has become available, which is in contrast to the traditional method based on the Gaussian approximation. Important Notes on Brilliance Calculation The input file is placed in the directory specified in the "Output File" subpanel of the GUI, with the prefix specified in the same subpanel as well. When reporting a bug found in SPECTRA, the users are kindly requested to attach the input file (*.json) in the e-mail, which is created before starting any calculation. Request for those who are reporting a bug
Tanaka, Physical Review Accelerators and Beams 21, 110704 (2018) Universal representation of undulator phase errors: T.Coherent Mode Decomposition of Partially Coherent SR: T.Tanaka, Physical Review Special Topics - Accelerators and Beams 17, (2014) 060702
Kitamura, Journal of Synchrotron Radiat(2001)
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