A NEW OPTICAL DESIGN METHOD AND ITS APPLICATION TO AN EXTREME-ULTRAVIOLET VARIED LINE SPACING PLANE GRATING MONOCHROMATOR

Authors
KOIKE M BEGUIRISTAIN R UNDERWOOD JH NAMIOKA T
Citation
M. Koike et al., A NEW OPTICAL DESIGN METHOD AND ITS APPLICATION TO AN EXTREME-ULTRAVIOLET VARIED LINE SPACING PLANE GRATING MONOCHROMATOR, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 347(1-3), 1994, pp. 273-277
Citations number
14
Categorie Soggetti
Nuclear Sciences & Tecnology","Physics, Particles & Fields","Instument & Instrumentation",Spectroscopy
Journal title
Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment → ACNP
ISSN journal
01689002
Volume
347
Issue
1-3
Year of publication
1994
Pages
273 - 277
Database
ISI
SICI code
0168-9002(1994)347:1-3<273:ANODMA>2.0.ZU;2-Z
Abstract
A new design method has been developed for a double-element optical sy stem. The method incorporates a very simple ray tracing procedure into an analytic merit function that closely represents the variance of an infinite number of ray-traced spots in the image plane. A 174-degrees constant-deviation objective Monk-Gillieson monochromator consisting of a highly demagnifying (approximately 1/10) spherical mirror, varied spacing plane grating, and elliptic cylindrical focusing mirror has b een designed for a bending-magnet beamline using the new design method . Ray-tracing results show that the new design can provide higher spec tral purity and throughput as compared to a design based on the light path function and that the monochromator design gives slit-width-limit ed resolutions over a wavelength range of 2-5 nm.