Spatial imaging of monochromatic hard x-rays from an APS undulator by the Kohzu double-crystal monochromator

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

DOI:https://doi.org/10.1063/1.1147509· OSTI ID:389534

Mills, D; Lee, W; Keeffe, M; Haeffner, D; Fernandez, P ^[1]

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1. Experimental Facilities Division, Advanced Photon Source, Argonne Naional Laboratory, Argonne, IL 60439 (United States)

The spatial distribution of monochromatic x-rays produced by an APS undulator was imaged on a fluorescent screen and recorded with a video camera while commissioning the Kohzu double-crystal monochromator (DCM). Two sets of images were recorded: Case 1 in which the spectral output of the undulator is fixed (constant magnetic gap) and the monochromator is scanned in energy, and Case 2 in which the monochromator energy is held fixed and the spectral output of the undulator is varied by changing the magnetic gap of the insertion device. Because of the performance of the Kohzu monochromator, the mechanical conditions required to maintain the twice-diffracted beam could be preserved as the DCM was scanned in energy, allowing the evolution as a function of energy. The images are compared with the calculated spatial distributions of monochromatic undulator radiation. {copyright} {ital 1996 American Institute of Physics.}

• OSTI ID: 389534
• 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

43 PARTICLE ACCELERATORS
44 INSTRUMENTATION
INCLUDING NUCLEAR AND PARTICLE DETECTORS
ADVANCED PHOTON SOURCE
ANL
AUXILIARY SYSTEMS
HARD X RADIATION
MONOCHROMATORS
PERFORMANCE
SPATIAL DISTRIBUTION
SYNCHROTRON RADIATION