High-resolution beamline 9.3.2 in the energy range 30{endash}1500 eV at the Advanced Light Source: Design and performance

Journal Article · Sun Sep 01 04:00:00 EDT 1996 · Review of Scientific Instruments

DOI:https://doi.org/10.1063/1.1146930· OSTI ID:389617

Hussain, Z; Huff, W; Kellar, S; Moler, E; Heimann, P; McKinney, W; Cummings, C; Lauritzen, T; McKean, J; Palomares, F; Wu, H; Zheng, Y; Young, A; Padmore, H; Fadley, C; Shirley, D ^[1]

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1. Lawrence Berkeley National Laboratory, Berkeley, CA 94720 (United States)

Bending magnet beamline 9.3.2 at the Advanced Light Source (ALS) was designed for high resolution spectroscopy with the capability for delivering circularly polarized light in the soft x-ray energy region using three gratings. The monochromator is a fixed included-angle spherical grating monochromator (SGM) and was originally used at SSRL as a prototype for later insertion-device-based monochromators for the ALS. For operation at the ALS, the toroidal pre-mirror used at SSRL was replaced by a horizontally focusing and a vertically focusing mirror in the Kirkpatrick-Baez configuration. Circularly polarized radiation is obtained by inserting a water-cooled movable aperture in front of the vertically focusing mirror to allow selecting the beam either above or below the horizontal plane. To maintain a stable beam intensity through the entrance slit, the photocurrent signals from the upper and lower jaws of the entrance slit are utilized to set a feedback loop with the vertically deflecting mirror piezoelectric drive. The beamline end station has a movable platform that accommodates two experimental chambers enabling the synchrotron radiation to be directed to either one of the two experimental chambers without breaking the vacuum. {copyright} {ital 1996 American Institute of Physics.}

• Research Organization: Lawrence Berkeley National Laboratory
• DOE Contract Number: AC03-76SF00098
• OSTI ID: 389617
• Report Number(s): CONF-9510119--
• Journal Information: Review of Scientific Instruments, Journal Name: Review of Scientific Instruments Journal Issue: 9 Vol. 67; ISSN 0034-6748; ISSN RSINAK
• Country of Publication: United States
• Language: English

Related Subjects

44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ADVANCED LIGHT SOURCE
BEAM BENDING MAGNETS
BEAM TRANSPORT
DESIGN
ENERGY RESOLUTION
EV RANGE 10-100
EV RANGE 100-1000
KEV RANGE 01-10
MONOCHROMATORS
OPTICAL SYSTEMS
PERFORMANCE
PHOTON BEAMS
POLARIZATION
SOFT X RADIATION
SYNCHROTRON RADIATION