Central Japan Synchrotron Radiation Research Facility Project

Naoto Yamamoto1, Yoshifumi Takashima1, Masahito Hosaka1, Masahiro Katoh21, Nobuhisa Watanabe1 and Yoshikazu Takeda1

1.Synchrotron Radiation Research Center, Nagoya University, Nagoya, 464-8603 Japan2.UVSOR, Institute for Molecular Science, Okazaki, 444-8585 Japan

E-mail : office@nusrc.nagoya-u.ac.jp, URL : http://www.nusrc.nagoya-u.ac.jp

The 12th Hiroshima International Symposium on Synchrotron Radiation, March 13-14th, 2008

Construction Schedule2009. Construction of the buildings2010. Constructoin of the ring2011. Construction of the beamlines 　 The first light from NSSR

Introduction Synchrotron Radiatoin (SR) Facility project has been proposed at Nagoya University since 1991.The basic idea was neither a large nor medium size ring, but a compact ring with the ability to supplyhard X-rays. This idea was extended to “Photo-Science Nanofactory,” consisting of an SR facility andadvanced analysis equipments such as TEM, SEM, AES, and XRD. In the mean time, the Aichi Prefec-tural government has been planning a new research and development complex for industries and unive-rsities in the Central area of Japan and the “Photo-Science Nanofactory” plan has been considered to be the best fit to the Aichi project. Therefore, the Prefecture, Industries, Universities, and Research Ins-titute in the Aichi area are working together to realize this plan.

SAGA Light Source(1.4 GeV, 1.9 keV)

HISOR(700 MeV, 0.38 keV)

SPring-8 (8 GeV, 28.9 keV)New SUBARU (1.5 GeV, 2.3 keV)

AURORA(575 MeV, 0.84 keV)

UVSOR-II(750 MeV, 0.43 keV)

KEK PF (2.5 GeV, 4.0 keV)KEK AR (6.5 GeV, 26.4 keV)

Toyota City

Toyohashi City

Nagoya Airport

CentrairJR Sinkansen

Subway(Higashiyama line)

Linear motor car (Linimo) 

Central JapanSynchrotron Radiatoin Facility

Nagoya City

Expressways

Beamlines

BoosterSynchrotron

Storage ringIR

SAXS

HX-LIGA

SX-LIGA

XRFAXRR

PowderXRD

VUV-XAFSARPES, RPES

Protein XRD

SX-XAFSHX-XAFS

Entrance

Figure 4. Spectra of photon flux from bending magnets (a) and brilliance from undulator (b)

The NSSR is small but powerful enough to supply hard X-rays from four superbends, and itis very attractive for both academic studies and industrial applications. We can extract two orthree hard X-ray beamlines from one superbend, so that more than 10 hard X-ray beamlines can be constructed in our facility. Currently, six beamlines are under consideration to be constructed in the first phase (Table. 3). Those are beamlines for hard X-ray XAFS, soft X-ray XAFS, soft X-ray to ultraviolet spe-ctroscopy, small angle scattering, X-ray diffraction, and X-ray fluorescence analysis.

Table 3. Six beamlines constructed in the first phaseBeamlines Energy Range Source OpticsHard X-ray XAFS 5-20 keV Superbend CM-DXM-RFMSoft X-ray XAFS 1-6 keV Normal bend CM-DXF-RFMVUV & Photoemission 0.03-1.5 keV Undulator VIAM Spectroscopy Small angle X-ray 5-20 keV Superbend TM-DXM ScatteringX-ray Diffraction 5-20 keV Superbend VCM-SDXM-VRFMX-ray Fluorescence 5-20 keV Superbend VFM-ASXM & Reflectivity

108

109

1010

1011

1012

1013

1014

104 1054 54 5

NSSR nbNSSR sbPF bUVSOR-II bSAGA bSPring-8 bNewSUBARU bRits

Photon energy (eV)

Flux

(ph/

s/m

rad/

0.1%

b.w

.)

103102

PF bending magnet (400mA)

(300mA)UVSOR bendingMagnet (350mA)

SPring-8 bendingmagnet (100mA)

NSSR 5TSuperbend

NSSRnormal bend(300mA)

SAGA-LSbending magnet(300mA)

Rits (300mA)

NewSUBARU

1013

1014

1015

1016

1017

101 102 103

Photon energy (eV)

Bril

lianc

e (p

h/s/

mra

d2 /mm

2 /0.1

% b

.w.)

1st

3rd

Linear modespectrum

Helical mode 1st5th

(a) (b)

Figure 3. Schematic view of the floor plan

CM:collimation mirror, DXM:plane 2 crystal monochromator, RFM:refocusing mirror, TM:toroidal mirror,

VIAM:variable-included-angle Monk-Gillieson mounting monochromator, VCM:vertical collimating mirror,

SDXM:sagittal focusing 2 crystal monochromator, VRFM:vertical refocusing mirror, ASXM:asymmetric 1 crystal monochromator.

Accelerators

Superbend

Normal bend

Normal bend

NormalbendNormal

bend

Normalbend

Normalbend Normal

bend

Normal bend

Undulator

WigglerScraper

Superbend

Superbend

Superbend

Kicker Pickup/Strip line

Kicker

DCCT Kicker

Septummagnet

Kicker

RF cavity

RF knockout

Table 1. Parameters of NSSRStorage ring

Beam energy 1.2 GeVCurrent > 300 mACircumference 62.4 mNormal bend 1.4 T, 39o x 8Super bend 5 T, 12o x 4RF frequency 500 MHzNatural emittance 53 nmradMagnetic lattice Triple Bend Cell x 4Straight section 2.8 m x 2

Booster synchrotronMax. beam energy 1.2 GeVCircumference 38~50 mRF frequency 500 MHz

Injector linacBeam energy 50 MeVCurrent 100mARF frequency 2856 MHz

The key equipment of the plan is a compact electron storage ring that is able to supply hard Xrays. The SR facility,consisting of accelerators, beamlines, peripheral equipments, and housing, has been designed at the Nagoya UniversitySynchrotron Radiation Research Center. The layout of the storage ring called as NSSR (Nagoya University Small Syn-chrotron Radiation Ring) is shown in Figure 1. The energy, beam current and circumference are 1.2 GeV, more than 300 mA, and 62.4 m, respectively. The natural emittance is 53 nmrad. The configuration of the storage ring is based on the Triple Bend with twelve bending magnets. Eight of them are normal conducting magnets (normal bends) of 1.4 T and four of them are 5 T superconducting magnets (superbends). The bending angle of them is 12 degrees and two or three hard X-ray beamlines can be constructed for each superbend.The flux from bending magnet is shown in Figure 4. The critical energy of the X-rays is 4.8 keV, which is close to thatof KEK Photon Factory. The number of beamlines from normal bends is more than 16. In addition, we will install an undulator and a wiggler in straight sections. In order to enable the top-up operation, the electron beam will be injected from a booster synchrotron with the full energy of 1.2 GeV. A 50 MeV linac will beused as an injector to the booster synchrotron.

Table 2. Parameters of the superbendYork type 1.2 GeVPeak field > 5 TBending angle 12o (1.2 GeV) Size

Length < 950 mmHight < 3000 mmWidth < 900 mm

Figure 1. Layout design of NSSR

Figure 2. Shematic View of the superbend