Undulator K Parameter & Brightness Calculator
Synchrotron insertion devices: Calculate the magnetic deflection parameter ($K$), fundamental and harmonic resonant X-ray wavelengths ($\lambda_n$), and undulator-to-wiggler regime transition.
Undulator Magnetic Array Specs
Typically 1.5–5 cm
Observation Angle & Harmonic
0 = on-axis peak brilliance
Resonant X-Ray & Regime Output
Deflection Parameter K:
--
dimensionless
Photon Energy hν:
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keV (at chosen harmonic)
Wavelength λ_n:
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Ångströms (Å)
Bandwidth Δλ/λ:
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1 / (n N) natural
Device Length L:
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meters (N · λ_u)
Insertion Device Regime Classification
Emission Regime:
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Max Deflection Angle $delta_0 = K / gamma$:
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