Performance of an ultrahigh resolution cylindrical grating monochromator undulator beamline

Journal Article · Tue Aug 15 04:00:00 EDT 2006 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.2237686· OSTI ID:20853514

Song, Y F; Yuh, J -Y; Lee, Y -Y; Chung, S C; Huang, L R; Tsuei, K -D; Perng, S Y; Lin, T F; Fung, H S; Ma, C -I; Chen, C T; Tsang, K L ^[1]

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1. National Synchrotron Radiation Research Center, Hsinchu 30076, Taiwan (China)

An ultrahigh resolution and high-flux undulator beamline U9-CGM, with a cylindrical grating monochromator and covering an energy range from 5 to 100 eV, has been constructed. Two separate entrance slits are included to provide different incident angles, hence to optimize the overall performance. This beamline delivers an average photon flux of 6x10{sup 10} photons/s with the entrance and exit slit openings at 10 {mu}m. An energy resolving power of 110 000 with a photon flux of 1x10{sup 10} photons/s was obtained at 16 eV with the 1800 line/mm grating and at 64 eV with the 1600 line/mm grating, with the entrance and exit slit openings at 3 and 5 {mu}m, respectively. A differentially pumped gas cell is used to attenuate high-order light by up to four orders of magnitude. This beamline will be a powerful tool for research in ultrahigh resolution spectroscopy of atoms, molecules, and condensed matter.

• OSTI ID: 20853514
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 8 Vol. 77; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

46 INSTRUMENTATION RELATED TO NUCLEAR SCIENCE AND TECHNOLOGY
ATOMS
CYLINDRICAL CONFIGURATION
DIFFRACTION GRATINGS
EV RANGE 01-10
EV RANGE 10-100
GRATINGS
MOLECULES
MONOCHROMATORS
OPENINGS
PERFORMANCE
PHOTONS
SPATIAL RESOLUTION
SPECTROSCOPY
WIGGLER MAGNETS
X RADIATION