Nanoprobe Calculator

Status:
Ready

x-ray source and detector

eV
nm
source size:
FWHM x-ray source size from undulator
mm
mm
distance of nanofocusing lens from undulator source (g)
m
coherence length:
FWHM lateral coherence length at microscope (nanofocusing lens)
mm
mm
ph/s/mm2/...
ph/s
toggle prefocusing lenses at the defined position along the beamline
m

nanofocusing lens

 
g/cm3
cm3
cm2/g
lens geometry:
Thick lens
radius of curvature
mm
geometrical aperture radius
mm
number of bi-concave lenses
set aperture R0 to maximum possible value given by lens thickness W
web thickness between lens parabolas
mm
thickness of single bi-concave lens
mm
horizontal NFL:
horizontally focusing NFL (always downstream)
g/cm3
cm3
cm2/g
lens geometry:
Thick lens
radius of curvature
mm
geometrical aperture radius
mm
number of bi-concave lenses
set aperture R0 to maximum possible value given by lens length W
web thickness between lens parabolas
mm
length of single bi-concave lens
mm
vertical NFL:
g/cm3
cm3
cm2/g
lens geometry:
mm
mm
mm
mm
lens arrangement:
distance between horizontal and vertical lens chip to overlap the focus
mm

nanofocusing lens properties

horizontal:
focal length
mm
shift of principal plane H
mm
effective lens aperture influenced by absorption
mm
numerical aperture
vertical:
mm
mm
mm
total:
lens transmission
mm2

results for given geometry

horizontal:
Thick lens
image distance
mm
distance from source to principal plane
mm
distance from principal plane to image
mm
working distance: end of lens to image
mm
magnification factor of source into image
vertical:
mm
mm
mm
mm
geometrical image size:
FWHM image size without diffraction effects
mm
mm
gain in flux density compared to flat beam
ph/s

prefocusing geometry

L2:
distance from prefocusing lens to intermediate (virtual) image
mm
mm
focus position:
distance from undulator to intermediate (virtual) image
mm
mm
distance to microscope:
distance from microcsope (nanofocusing lens) to intermediate (virtual) image
mm
mm
coherence length:
FWHM lateral coherence length at microscope (nanofocusing lens), taking prefocusing into account
mm
mm
intermediate image size:
FWHM image size of intermediate (virtual) focus
mm
mm
ph/s/mm2

prefocusing lens

mm
g/cm3
cm3
cm2/g
mm
g/cm3
cm3
cm2/g
mm
g/cm3
cm3
cm2/g

prefocusing lens properties

horizontal:
focal length
mm
effective lens aperture influenced by absorption
mm
numerical aperture
vertical:
mm
mm
total:
lens transmission
mm2

results with diffraction effects

horizontal:
FWHM beam size from diffraction effects only, assuming a Gaussian aperture
mm
depth of focus for diffraction limited beam
mm
FWHM total beam size with diffraction and source demagnification
mm
depth of focus for full beam
mm
vertical:
mm
mm
mm
mm
total:
gain in flux density compared to flat beam
coherence length:
FWHM lateral coherence length in focus
mm
mm

Developed by Tim Lukas with additions from Frank Seiboth. Based on the nanoprobe calculator by Christian Schroer.