A PLANE GRATING MONOCHROMATOR FOR THE NEW UNDULATOR AT ALADDIN - 8-240 EV

Authors
REININGER R CROSSLEY SL LAGERGREN MA SEVERSON MC HANSEN RWC
Citation
R. Reininger et al., A PLANE GRATING MONOCHROMATOR FOR THE NEW UNDULATOR AT ALADDIN - 8-240 EV, Nuclear instruments & methods in physics research. Section A, Accelerators, spectrometers, detectors and associated equipment, 347(1-3), 1994, pp. 304-307
Citations number
16
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
304 - 307
Database
ISI
SICI code
0168-9002(1994)347:1-3<304:APGMFT>2.0.ZU;2-G
Abstract
A comparative study on the expected performance of two monochromator d esigns for the new undulator beamline at the Aladdin storage ring is r eported. The undulator, a 3.5 m device, will cover the energy range 8- 240 eV in the first and third harmonic. The flux and resolution of a s tigmatic plane grating monochromator (PGM) equipped with an entrance s lit and of a spherical grating monochromator (SGM) with a movable exit slit were calculated analytically and by means of ray-tracings. The P GM design, tuned to a resolving power of 10(4), can deliver more than 10(12) photons/s at the sample position in the photon energy range 20- 170 eV. The illuminated spot size at the sample position will be less than 500 mum (horizontal) by 50 mum (vertical). This performance is no t achieved with the SGM design.