Monochromator beamline for FLASH
- Institut fuer Experimentalphysik, Universitaet Hamburg, Luruper Chaussee 149, D-22761 Hamburg (Germany)
The design of a high resolution monochromator for the vacuum ultraviolet free electron laser at Hamburg (FLASH), DESY, is described. The monochromator is constructed as a plane grating monochromator using collimated light. Modifications have been made to take into account the free electron laser (FEL) beam characteristics, in particular, the extremely high peak power density of the radiation. Ray tracing simulations yield a resolving power in the range of 10 000-70 000 depending on the photon energy and the grating in use. Our monochromator is equipped with a 200 line/mm grating for the energy range of 20-200 eV--the operation regime of FLASH--and a high resolution 1200 line/mm grating for the energy range of 100-600 eV, covering the higher harmonic radiation of the FEL.
- OSTI ID:
- 20861503
- Journal Information:
- Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 11 Vol. 77; ISSN 0034-6748; ISSN RSINAK
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
BEAMS
DENSITY
DESIGN
DESY
DIFFRACTION GRATINGS
EQUIPMENT
EV RANGE 10-100
EV RANGE 100-1000
FREE ELECTRON LASERS
MODIFICATIONS
MONOCHROMATORS
OPERATION
PEAK LOAD
PHOTONS
RESOLUTION
SIMULATION
ULTRAVIOLET RADIATION
VISIBLE RADIATION