Superconducting 7 T wiggler for LSU CAMD

Borovikov, V. M.; Craft, B.; Fedurin, M.; Jurba, V.; Khlestov, V.B.; Kulipanov, G. N.; Li, O.; Мезенцев, Н.А.; Saile, V.; Shkaruba, V. A.

doi:10.1107/s0909049597018232

Cited by 27 publications

(5 citation statements)

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“…Some designs have steerer magnets upstream and downstream which keep the source point on-axis while tuning the field of the main pole ( Fig. 3) (Borovikov et al 1998(Borovikov et al , 2001.…”

Section: Dipole Wavelength Shifter and Planar Wigglermentioning

confidence: 99%

Shaping Photon Beams with Undulators and Wigglers

Bahrdt¹

2014

Synchrotron Light Sources and Free-Electron Lasers

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Periodic magnetic structures, i.e., undulators and wigglers, have been used for nearly 40 years as sources of brilliant synchrotron radiation. Today, sophisticated undulator designs provide many degrees of freedom such as photon beam energy, variable polarization, and orbital angular momentum. Specific designs efficiently suppress higher orders or reduce the on-axis power density. All tuning parameters are required to be freely accessible by the users. Still, the majority of undulators is based on permanent magnets with a clear trend to short periods and in-vacuum and cryogenically cooled systems. Similar designs are used for storage rings and free electron lasers, though the field quality requirements are different. Today, the optimization of a specific experiment follows a global approach. This includes not only the undulator design itself but also local lattice modifications to cope with ambitious designs, elaborate tracking schemes to estimate the impact on the dynamic aperture, and last but not least radiation propagation tools which transport a realistic photon beam phase space to the sample. This chapter summarizes the theory of undulator radiation and reviews the technological realization of undulators and wigglers. Operational issues are discussed, as well.

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Section: Dipole Wavelength Shifter and Planar Wigglermentioning

confidence: 99%

Shaping Photon Beams with Undulators and Wigglers

Bahrdt¹

2014

Synchrotron Light Sources and Free-Electron Lasers

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“…This experimental station is a high-energy beamline for XRF measurements at BESSY II at the Helmholtz-Zentrum Berlin. At this beamline the primary radiation source is a 7 T wavelength shifter (Wiedemann, 2010; Borovikov et al, 1998;Gö rner et al, 2001).…”

Section: Sample Chamber and Peripherymentioning

confidence: 99%

A setup for synchrotron-radiation-induced total reflection X-ray fluorescence and X-ray absorption near-edge structure recently commissioned at BESSY II BAMline

Fittschen

Guilherme

Böttger

et al. 2016

J Synchrotron Radiat

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An automatic sample changer chamber for total reflection X-ray fluorescence (TXRF) and X-ray absorption near-edge structure (XANES) analysis in TXRF geometry was successfully set up at the BAMline at BESSY II. TXRF and TXRF-XANES are valuable tools for elemental determination and speciation, especially where sample amounts are limited (<1 mg) and concentrations are low (ng ml(-1) to µg ml(-1)). TXRF requires a well defined geometry regarding the reflecting surface of a sample carrier and the synchrotron beam. The newly installed chamber allows for reliable sample positioning, remote sample changing and evacuation of the fluorescence beam path. The chamber was successfully used showing accurate determination of elemental amounts in the certified reference material NIST water 1640. Low limits of detection of less than 100 fg absolute (10 pg ml(-1)) for Ni were found. TXRF-XANES on different Re species was applied. An unknown species of Re was found to be Re in the +7 oxidation state.

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“…The radiation source for this beamline is a 7 T superconducting, energy-shifting wiggler at the Center for Advanced Microstructures and Devices (CAMD) in Baton Rouge, LA [1]. The critical wavelength for the wiggler is 1.18 A (10.5 keV) when operated at 7 Tesla with a 1.5 GeV electron beam.…”

Section: Thementioning

confidence: 99%

The development of the GCPCC protein crystallography beamline at CAMD

Miller¹,

Phillips

White³

et al. 2001

AIP Conference Proceedings

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The Gulf Coast Protein Crystallography Consortium (GCPCC) is developing a beamline at the LSU/CAMD synchrotron. This beamline will be capable of standard macromolecular multiple-wavelength anomalous diffraction (MAD) phasing experiments over an energy range of 7-17.5 keV. The optical configuration uses a vertical collimating mirror, a channel-cut Si (111) monochromator and a focusing toroidal mirror. Built off of the CAMD 7 T superconducting, energy-shifting wiggler, this beamline will deliver a flux comparable to an NSLS bending magnet protein crystallography (PX) beamline. The beamline delivery and commissioning timetable calls for full 24/7 user operations by October 2001. The beamline design, with supporting calculations and ray tracing, is presented to substantiate the expected performance of this beamline for efficiently collecting accurate MAD data from macromolecules.

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Superconducting 7 T wiggler for LSU CAMD

Cited by 27 publications

References 1 publication

Shaping Photon Beams with Undulators and Wigglers

Shaping Photon Beams with Undulators and Wigglers

A setup for synchrotron-radiation-induced total reflection X-ray fluorescence and X-ray absorption near-edge structure recently commissioned at BESSY II BAMline

The development of the GCPCC protein crystallography beamline at CAMD

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