ARPES at the Advanced Light Source
BEAMLINE-10
Beamline 10.0.1 has been delivering photons for over 20 years as it is one of the first beamlines commissioned at the Advanced Light Source (http://www.sciencedirect.com/science/article/pii/016890029290539G). This is an undualtor beamline with the spherical grating monochromator (SGM) which at the time of its design and construction was a proven passkey to achieving a high resolving power. Indeed, in 1996 measurements of the double-excitation resonance in helium performed at the beamline (http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.77.3086 ) demonstrated a resolving power of 64 000 at 64.1 eV which back then was a world record.
Beamline 10.0.1 has been delivering photons for over 20 years as it is one of the first beamlines commissioned at the Advanced Light Source (http://www.sciencedirect.com/science/article/pii/016890029290539G). This is an undualtor beamline with the spherical grating monochromator (SGM) which at the time of its design and construction was a proven passkey to achieving a high resolving power. Indeed, in 1996 measurements of the double-excitation resonance in helium performed at the beamline (http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.77.3086 ) demonstrated a resolving power of 64 000 at 64.1 eV which back then was a world record.
For many years the beamline has been a home of the High Resolution Angle-resolved Photoemission experiment (HERS) which delivered a wealth of data on the electronic structure of strongly correlated materials such as high critical temperature superconductors and colossal magneto-resistance manganites. It has also supported a plethora of experiments looking into the physics and chemistry of atoms, molecules and small clusters. In 2015 the beamline has been reconfigured in order to focus its operations solely on the angle resolved photoemission spectroscopy of solid state samples and thin films. A new end-station for spin- and angle-resolved photoemission is being added to the branch line previously occupied by “Ion-Photon Beam” (IPB) experiment which has been decommissioned. Spin resolved photoemission became an important tool enabling studies of new materials with novel and interesting spin textures, such as topological insulators which have been first studied by the photoemission at the ALS beamline 12.0.1. It will compliment ARPES at the well-established HERS experiment and propel beamline 10.0.1 into the new area of spintronic materials and magnetism.
For many years the beamline has been a home of the High Resolution Angle-resolved Photoemission experiment (HERS) which delivered a wealth of data on the electronic structure of strongly correlated materials such as high critical temperature superconductors and colossal magneto-resistance manganites. It has also supported a plethora of experiments looking into the physics and chemistry of atoms, molecules and small clusters. In 2015 the beamline has been reconfigured in order to focus its operations solely on the angle resolved photoemission spectroscopy of solid state samples and thin films. A new end-station for spin- and angle-resolved photoemission is being added to the branch line previously occupied by “Ion-Photon Beam” (IPB) experiment which has been decommissioned. Spin resolved photoemission became an important tool enabling studies of new materials with novel and interesting spin textures, such as topological insulators which have been first studied by the photoemission at the ALS beamline 12.0.1. It will compliment ARPES at the well-established HERS experiment and propel beamline 10.0.1 into the new area of spintronic materials and magnetism.
Spherical Grating Monochromator (SGM) contains three diffraction gratings (380, 925 and 2100 lines/mm) that cover the energy range from 17 eV to 340 eV. It takes light from the “full-length” (4.55 meters long) undulator with 43 periods (length of the period is 10 centimeters). Use of the full-length insertion device (undualtor) ensures a very high photon flux (as compared to the newer beamlines often coupled to the chicaned undualtors). The beamline provides an intense beam of photons with the very high spectral resolution: Over most of its photon energy range, the beamline can deliver more than 5E12 photons/s to the sample with the resolving power (E/ΔE) exceeding 10,000.
Spherical Grating Monochromator (SGM) contains three diffraction gratings (380, 925 and 2100 lines/mm) that cover the energy range from 17 eV to 340 eV. It takes light from the “full-length” (4.55 meters long) undulator with 43 periods (length of the period is 10 centimeters). Use of the full-length insertion device (undualtor) ensures a very high photon flux (as compared to the newer beamlines often coupled to the chicaned undualtors). The beamline provides an intense beam of photons with the very high spectral resolution: Over most of its photon energy range, the beamline can deliver more than 5E12 photons/s to the sample with the resolving power (E/ΔE) exceeding 10,000.
Schematic layout of ALS Beamline 10