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 : [email protected], 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