XTIP – A dedicated beamline for synchrotron X-ray scanning tunneling microscopy
A result of combining synchrotron X-ray radiation and scanning probe microscopy is a powerful microscope which can image and examine materials with unprecedented details. Synchrotron X-ray scanning tunneling microscopy (SX-STM) is designed for real space imaging of objects on a surface at the atomic limit and simultaneously obtaining electronic, chemical or magnetic contrast. At Advanced Photon Source in Argonne National Laboratory, XTIP beamline, the world’s first dedicated beamline for SX-STM has been constructed. The beamline mainly consists of circular and linear polarizer with switching rate of 1Hz, a spherical grating monochromator with more than 4000 resolving power and KB mirrors to focus beam down to tens of micrometer. The beamline can produce a photon flux of 1011-1013 photons per second at 1keV. The capabilities of the beamline will benefit the communities to explore chemical, magnetic and electronic properties of materials at atomic resolution. Recently, a commissioning of the beamline has been conducted, and in this talk, preliminary status of the beamline and measurements from commissioning will be discussed.