Beamline Description

 

The photons dispersion system is based on the Padmore VASGM (Variable Angle Spherical Grating Monochromator) scheme and it includes four different interchangeable spherical gratings. The first three gratings guarantee resolving powers of 20000-6000, 20000-6000 and 15000-5000 in the energy ranges 35-200 eV, 200-500 eV and 500-1600 eV respectively.

MONOCHROMATOR: ENERGY RANGES

Grating	Optimized Energy Range	Resolving Power	Flux with slits at 10  mm (high resolution)
SG1	44 eV-349 eV (35 eV-42 eV available under special request)	high resolving power: 20000-6000	flux>1012 ph/s
SG2	158 eV-597 eV	high resolving power: 20000-6000	flux>1010 ph/s
SG3	491 eV-1600 eV	high resolving power: 15000-5000	flux>1010 ph/s
SG4	301 eV-1600 eV	medium resolving power: 10000-2000	flux>1011 ph/s