A,B: Bending Line

Circular Polarized UV Free Electron Laser (FEL) [800-199 nm, ~1W]
UV Coherent High-Harmonic Generation from Laser (HHG)

BL1B

Terahertz Spectroscopy with Coherent Synchrotron Radiation (THz-CSR)[Martin-Puplett FT-FIR 0.5 ‒ 30 meV]

BL2A

Soft X-ray Absorption Spectroscopy (XAS)[Double Crystal 585 ‒ 4000 eV]

BL2BPhotoelectron Spectroscopy dedicated to Organic Solids (Molecular PES)
[18-m Spherical Grating 23 ‒ 205 eV]

BL3Uin situ/operando Soft X-ray Absorption Spectroscopy (Molecular XAS)
[Varied-line-spacing Plane Grating 60 ‒ 800 eV]

BL3B

Vacuum Ultraviolet Spectroscopy (VUV)[2.5-m Oﬀ-plane Eagle-type Normal Incidence 1.7-31 eV]

BL4USoft X-ray Spectro-microscopy (STXM)[Varied-line-spacing Plane Grating 130 ‒ 770 eV]

BL4BSoft X-ray Absorption Spectroscopy (XAS, XMCD)[Varied-line-spacing Plane Grating 25 ‒ 1000 eV]

BL5U

High-Resolution Spin-, Space- and Angle-Resolved Photoemission(HR spin- and μ-ARPES) [Spherical Grating 20 ‒ 200 eV]

BL5B

VUV/Soft X-ray Spectrometer dedicated to Calibration of Optical
Elements and Detectors [Plane Grating 6 ‒ 600 eV]

BL6U

Molecular Angle-Resolved Photoemission Spectroscopy(Molecular ARPES) [Varied-line-spacing Plane Grating 30 ‒ 500 eV]

BL6BInfrared and Terahertz Spectroscopy (IR/FIR/THz)[Michelson FT-IR 4 meV ‒ 2.5 eV]

BL7UHigh-Resolution Angle-Resolved Photoemission Spectroscopy(HR ARPES) [10-m Normal Incidence 6 ‒ 40 eV]

BL7B

Vacuum Ultraviolet Spectroscopy (VUV)[3-m Normal Incidence 1.2 ‒ 25 eV]

BL8BAngle-Resolved Photoemission Spectroscopy dedicated to Organic Solids(Molecular ARPES) [Plane Grating 1.9-150 eV]e-beams Electron Injector/Storage Ring/Laser Compton g-rays→ Toyota

BL1U

Okazaki City hallTomei HighwayRoute 1←NagoyaOkazaki I.C.

Toyohashi→

Fukiya Bridge N.

Okazaki Castle
The Otogawa River

Higashi-Okazaki←Nagoya

Meitetsu Line

Toyohashi→

Green indicates beamlines open to public users.
Orange indicates beamlines dedicated to joint research with in-house memb

Rokusho Shrine
NIBBNIPS←
Kota and Gamagori

UVSOR Users

National Institutes of Natural Sciences
Institute for Molecular Science
UVSOR Synchrotron★Academic and Public UsersUVSOR Synchrotron belongs to the Institute for
Molecular Science (IMS), which is dedicated toacademic researches as one of the inter-university
national research institutes. IMS is open to the world.
Academic use of UVSOR Synchrotron is free ofcharge. Travel and local expenses for the registeredusers (even from abroad) are fully or partly covered
by IMS.
★Private Users : charged★Please check UVSOR for details.

UVSOR

SearchAdministration Office
IMS

UVSOR

Okazaki Conference Center
Okazaki High School N.W.
National Institutes of Natural Sciences

To Osaka
NagoyaCentrair

Nagoya I.C.

HigashiOkazakiToyota JCT
Okazaki I.C.
ToM meieitet Highwsu
Lin ayeToyohashi

To Tokyo
Shinkansen

National Institutes of Natural Sciences
Institute for Molecular Science
UVSOR Synchrotron
38 Nishigo-Naka, Myodaiji, Okazaki 444-8585, Japan
TEL:+81-564-55-7401 FAX:+81-564-54-7079
https://www.uvsor.ims.ac.jp/eng/index.html

March 2015

UVSOR Synchrotron

U: Undulator Line

Institute for Molecular Science
National Institutes of Natural Sciences

Beamlines and Stations on UVSOR-III

Synchrotron Radiation
Synchrotron radiation is quite bright and has a wide
wavelength range including microwave, infrared rays,visible light, ultraviolet and vacuum ultraviolet rays, andsoft and hard X-rays. It has highly directional, pulse, andpolarization characteristics. It is used as a tool ofresearch for broad ﬁelds, such as molecule science, solid
science, materials science, life science, and space science.

Synchrotron radiation (SR)is emitted from high energy
electrons which are bent by
the strong magnetic ﬁeld ofbending magnet. It is calledbending radiation.

Semi-monochromatic and semicoherent SR is emitted from highenergy electrons passing througha periodic magnetic sequence witha small gap. The wavelength andpolarization is changeable bycontrolling the sequence and gap.
It is called undulator radiation.

UVSOR-I 1983, UVSOR-II 2003, UVSOR-III since 2012
The original UVSOR Synchrotron was constructed for application of highly focused and brightIR, VUV and soft X-rays to molecular science in 1983 and for its promotion to the world.
UVSOR Synchrotron is a rather small (53-m circumference) and low-energy (0.75 GeV) facility.
It excels the other facilities in the world in the VUV and lower soft X-ray region. The VUVlight and lower soft X-rays interact strongly with materials and can only be handled in vacuum(no materials). It serves as a powerful photon source to research the origin of chemical andphysical phenomena, such as chemical reactivity and conductive and magnetic functions.
UVSOR Synchrotron was constructed 30 years ago; however, new technologies, such as
diﬀraction limit beam emittance and top up injection, have been strategically introduced by
two major upgrade projects from UVSOR-I to UVSOR-III. The performance is still on thehighest level in the world, as a small and low-energy synchrotron light source.

Accelerators of UVSOR-III[BL3U] In-situ Observation of Electrochemical
Reaction by Soft X-ray Absorption Spectroscopy
We have developed an in-situ observation system ofsoft X-ray absorption spectroscopy (XAS) to study
local structures of electrolytes in electrochemical
reaction by using a liquid ﬂow cell with built-in
electrodes, in which the thickness of the liquid layer
is controllable between 20 nm and 2000 nm. We havemeasured Fe L-edge XAS of aqueous iron sulfatesolution, and revealed the kinetics of the oxidation
process from Fe(II) to Fe(III) ions by increasing theelectrode potential and that of the reduction processfrom Fe(III) to Fe(II) ions by decreasing the potential.
Reference: M. Nagasaka et al., J. Phys. Chem. C 117,16343 (2013).

Variable Polarization Undulator
In vacuum Undulator

Electron beamfrom 0.75 Gev
booster synchrotron

In vacuum Undulator

Variable Polarization Undulator

Variable Polarization Undulator
Variable Polarization Undulator…

Bending magnet…

multi- pole magnet…
…

Steering magnet
Synchrotron light

Variable Polarization Undulator[BL4U] Scanning Transmission X-ray
Microscope (STXM)The STXM focuses X-rays onto a sample as ~30 nm spot size
and measures the intensity of the transmitted X-rays. Then,by changing the energy of the X-rays, 2-dimensional chemical
state mapping with high spatial resolution can be obtained.
The samples in atmospheric or wet condition can be alsoobserved.

Harmonic Cavity
High Frequency Cavity

This apparatus is used for in-situ/operando observation ofliquids, catalytic reactions, and electrochemical reactions. The
local structures around target atoms in liquid, such as
hydration structures, reaction intermediates, and electrodesurfaces, are investigated by T-mode soft X-ray absorption.

Iron-based high-temperature superconductors, haveattracted much attention because, until then, themagnetic nature of iron has been considered todisturb
thesuperconductivity.
Fromtheangle-resolved photoemission spectroscopy for theiron-based superconductors A0.8Fe2Se2 (A = K, Cs),
we found that their superconducting mechanism canbe described in terms of the conventional BCS theory
despite the transition temperature is rather high.
These results indicate a possibility to increase thetransition temperature beyond the framework ofBCS theory, leading to exciting applications such as alossless power transmission.

U6 In-Vacuum
Undulator
U5 Undulator Circular
U5 Undulator Planer

Electron Storage RingUVSOR can generate THz wave to 4keV soft X-rays from
8 bending magnets and VUV and <1keV soft X-rays from
6 units of undulators. The synchrotron light is guided toeach unique experimental equipment. Each beamline
consists of a monochromator to choose the wavelength orphoton energy and a focusing mirror to collimate andfocus the light.

Undulator
An undulator is a device with periodic
magnetic structures. When the electrons
pass through the undulator, they are forced
into a snake-like path. The device is inserted
into the straight section between thebending magnets. 6 units of undulators havealready been installed in the UVSOR-III
storage ring.

[BL4B] High Magnetic Field, Low Temperature
Soft X-ray Magnetic Circular Dichroism (XMCD)
Element speciﬁc magnetization in magnetic materials isobserved at a magnetic ﬁeld up to ±7 T and a temperature
down to 5 K. Magnetic thin ﬁlms prepared in a connected
sample preparation chamber can be investigated under anultrahigh vacuum condition as they are without exposing toair.

[BL6U] Molecular High-Resolution Angle-Resolved
Photoelectron Spectrometer (HR ARPES)
When a molecule is irradiated by linearly polarized
monochromatic soft X-ray photons, a photoelectron is emitted
due to the photoelectric eﬀect. In order to measure theangular distributions of the photoelectrons, a new apparatus
which is rotatable around the photon beam axis has beendeveloped.

Injector[BL5U] High-Resolution Spin-, Space-, and Angle-Resolved
Photoemission Spectroscopy (HR spin- and μ-ARPES)
Information of electrons in solid which causes interesting
physical properties is directly obtained by analyzing spacedependence of spin, angle, and energy of electrons emitted
from bulk solid and solid surface by illuminating micro-focused
VUV light.

Lattice vibrations(phonons)
Scattered electrons[BL7U] High-Resolution Angle-Resolved
Photoemission Spectroscopy (HR ARPES)
High energy- and momentum-resolution ARPES is available
using low energy photons (6 -40 eV). Measurements withextremely low energy photons (< 10 eV) provide bulk
electronic structure of solids.

[BL3B] Origin of Chiral
Asymmetry of Biomaterials

Amino acids have enantiomers, which have samechemical composition but diﬀerent three-dimensional
structure, such as of right hand and left hand. They
are refereed to L- and D-forms. Mysteriously, most of
the amino acids contained in the natural biologicalmaterials on the earth have the L-form. If the originof the biological material were in the space, thisasymmetry might have been caused by irradiation of
circularly polarized light in space. Using thepolarization variable undulator and free electronlaser, the experimental veriﬁcation has been carriedout.

Wavelength(nm)[BL6U] Site Speciﬁc IntermolecularInteraction on Organic Crystals

Charge transport in organic solids is an importantfundamental process in organic electronics such asorganic light-emitting diodes and organic photovoltaic
cells, and is dominated by the weak intermolecularinteraction. We have systematically studied thevalence band structure of crystalline ﬁlms of various
metal phthalocyanine molecules. It was found thatthe charge transport mechanism in organic crystals
is dominated by the site-speciﬁc interplay between
the local and non-local electron-phonon couplings.

The injector consists of a linear accelerator
to generate electron beams and a booster
synchrotron to accelerate electron beams.
As the beam current of the storage ringdecreases, the electrons are injected
immediately to keep the current almost
constant. This iis called top-up injection.

Electrons are scattered by the thermal vibrations of
the lattice, i.e. phonons, resulting in an electricresistance. The microscopic features of theelectron-phonon scattering have not been clear so far.
In this study, we performed the angle-resolved
photoemission spectroscopy of graphite, which isused in pencil lead, with the low photon energy. For
the ﬁrst time, we have succeeded to directly observe
the electrons after the scattering process by thephonons.

Electrons in solids[BL7U] Novel Electronic Structure in Newly
Discovered Fe-based Superconductors

U3 In-Vacuum Undulator

Bending magnet[BL7U] Direct Observation ofElectron-Phonon Scattering in Graphite[BL3U] in-situ/operando Soft X-ray Absorption
Spectroscopy of Liquid in Transmission Mode (XAS)U7 Undulator Planer
U7 Undulator Circular

Research Outputs from UVSOR-III

Ellipticity (mdeg.)

The UVSOR-III is composed of three
accelerators:
a15MeVlinearaccelerator for electron injection, abooster synchrotron of about 8.5 min diameter for accelerating theelectron beam up to 0.75 GeV and a0.75 GeV electron storage ring ofabout 17 m in diameter and 53 m incircumstance. Synchrotron light isproduced from 8 pairs of bendingmagnets and 6 units of undulators.

Experimental Stations on UVSOR-III[BL6U] Dissociation Dynamics
of Core Excited Molecules

A molecule consists of more than two atoms held
together by chemical bonds. We can classify theelectrons in the molecules into two categories:
valence and core electrons. While the valence
electrons participate in the formation of the chemicalbonds, the core electrons are localized to particular
atoms and not involved in any chemical bonding. Thecore electron excitation and subsequent Auger decay
often result in multiple bond-breaking, which ishardly seen in the valence excitation. We develop
new experimental techniques to explore the decay
dynamics in core-excited or core-ionized molecules.