Insertion device

Abstract: Three macromolecular crystallography (MX) beamlines at the Helmholtz-Zentrum Berlin (HZB) are available for the regional, national and international structural biology user community. The state-of-the-art synchrotron beamlines for MX BL14.1, BL14.2 and BL14.3 are located within the low-β section of the BESSY II electron storage ring. All beamlines are fed from a superconducting 7 T wavelength-shifter insertion device. BL14.1 and BL14.2 are energy tunable in the range 5–16 keV, while BL14.3 is a fixed-energy side station operated at 13.8 keV. All three beamlines are equipped with CCD detectors. BL14.1 and BL14.2 are in regular user operation providing about 200 beam days per year and about 600 user shifts to approximately 50 research groups across Europe. BL14.3 has initially been used as a test facility and was brought into regular user mode operation during the year 2010. BL14.1 has recently been upgraded with a microdiffractometer including a mini-κ goniometer and an automated sample changer. Additional user facilities include office space adjacent to the beamlines, a sample preparation laboratory, a biology laboratory (safety level 1) and high-end computing resources. In this article the instrumentation of the beamlines is described, and a summary of the experimental possibilities of the beamlines and the provided ancillary equipment for the user community is given.

Abstract: The Materials Science beamline at the Swiss Light Source has been operational since 2001 In late 2010, the original wiggler source was replaced with a novel insertion device, which allows unprecedented access to high photon energies from an undulator installed in a medium-energy storage ring In order to best exploit the increased brilliance of this new source, the entire front-end and optics had to be redesigned In this work, the upgrade of the beamline is described in detail The tone is didactic, from which it is hoped the reader can adapt the concepts and ideas to his or her needs

Abstract: UNDULATORS AND WIGGLERS Electron Beam Dynamics, L. Farvacque Generalities on the Synchrotron Radiation, P. Elleaume Undulator Radiation, P. Elleaume Bending Magnet and Wiggler Radiation, R.P. Walker Technology of Insertion Devices, J. Chavanne and P. Elleaume Polarizing Undulators and Wigglers, H. Onuki Undulators Wigglers Exotic Insertion Devices, S. Sasaki Free Electron Lasers, M.E. Couprie APPLICATIONS Impact of Insertion Devices on Macromolecular Crystallography, Wakatsuki Choice of Insertion Device Optics and Choice of Wavelengths End Station Instrumentation Area Detectors Data Acquisition and Data Analysis Ancillary Facilities New Operation Modes of Synchrotron Radiation Protein Crystallography Recent Results from Insertion Device Beam Lines Future Outlook Intravenous Coronary Angiography as an Example, W.R. Dix Polarization ModulationSpectroscopy by Polarizing Undulator, H, Onuki, T. Yamada, and K. Yagi-Watanbe Circular Dicroism (CD) Measurement and Two Dimensional CD Imaging Magnetic Circular Measurement Solid State Physics, T. Miyahara X-ray Optics, W.K. Lee, P. Fernandez, and D.M. Mills Metrological Applications, T. Saito

Abstract: The figure-8 undulator is a novel insertion device which has recently been proposed in order to obtain linearly polarized radiation with low on-axis power density. Since the trajectory is different from any other insertion device developed or proposed so far, the features of figure-8-undulator radiation are also considered to be different. In this paper, various features of figure-8-undulator radiation are investigated to clarify differences between the figure-8 undulator and other ordinary insertion devices.