National Synchrotron Radiation Laboratory (NSRL)

Liu, Naiquan Professor of Physics
Deputy Directors:
Zhang, Xinyi Professor of Physics, USTC Vice-president
He, Duohui Professor of Physics, Member of Chinese Academy of Engineering Sciences
Pei, Yuanji Professor of Physics
Zhang, Wu Professor of Physics
Bao, Zhongmou Professor of Physics

Tel: (86-551) 556-2231
Fax: (86-551) 556-1078

National Synchrotron Radiation Laboratory (NSRL) is situated on the west campus of the University of Science and Technology of China with a ground area of about 10 hectares.

NSRL light source is the first dedicated synchrotron radiation facility in China. Its central part is an electron storage ring with a nominal energy of 800 MeV and a stored beam current of 100~300 mA. The electron beam comes from a 200 MeV linac and is then, via a transport line, injected into the storage ring. The critical wavelength of the radiation from the ring bending magnets is 24 . There are 24 light ports distributed over the 12 bending magnets, while three more will be added in the future, each from a planned insertion device. In total, 50 or more beamlines can be installed around the ring and even more experimental stations be supported simultaneously.

The construction of NSRL facility began on November 20, 1984, and was completed in 1989. Its commissioning is ended in December, 1991, with a national review. And in 1993, the facility was open to service of scientists from home and abroad. The total budget up to then amounts to 62.4 million RMB. Most of the work, including designing, construction, installation and commissioning, was done by the research fellows and technicians of NSRL itself, and most of the major equipment made domestically. Compared with other similar light sources in the world, the performance of its stored beam is among the best. This achievement is to a great extent due to the assiduous and dedicating work of all the staff members of the laboratory under difficult conditions.

Owing to a series of its outstanding properties like massive intensity, high brightness, broad continuous spectrum, low emittance, polarization, pulsed time structure and contamination-free vacuum environments, synchrotron light has been widely used over a great variety of scientific and technological area such as physics, chemistry, life science, material science, surface science, metrology, medicine, microscopy, X-ray lithography, microfabrication of devices as well as many others. So far NSRL has equipped five experimental stations, ready for research on X-ray lithography, soft X-ray microscopy, photoelectron spectroscopy, time-resolved spectroscopy and photochemistry, respectively. In the near future, the insertion devices, such as wiggler and undulator, and more beam lines and experimental stations will be constructed.

The NSRL is open to and shared by all the scientists and researchers over China, while users from abroad are also welcome. NSRL was selected as one of the host centers of the Third World Academy of Sciences in last June. Up till now more than 100 user groups have registered and a lost of experiments have been carried out by the users from all over the country and abroad.

The predominant synchrotron radiation application research work in the NSRL will be developed in six areas as follows:

  1. Study on the photoelectron and VUV (vacuum ultraviolet) spectroscopy for condensed matters,
  2. Photoionization and chemical kinetics of atoms, molecules and clusters,
  3. Study of the biological large molecules protein and DNA crystallography,
  4. SX (soft X-ray) optics: optical elements, holography and holographic microscopy,
  5. LIGA technology and micro-fabrication of mechanical and photoelectric devices,
  6. SX and VUV metrology.

The electron beam from the 200 MeV linac can be also used for nuclear physics experiments, radiate chemistry experiments, etc. Interests in building user-owned beamlines or stations will be favorably considered.

1.  X-ray Lithography Beamline and 
Main Technical Parameters
--- Special exposure shutter action time, 15 ms
--- Mirror box vacuum , < 510-8  Pa
--- Scanning plane mirror grazing angle,  20 mrad;  
	 horizontal accepting angle, 5.5 mrad; 		
	oscillating frequency 138 Hz (Max.) 
--- Be window thickness, 7.6~25 mm
--- Wavelength, 4~20 
--- Exposure area, 3030 mm2
---  Uniformity,  > 90%

2.  Time Resolved Spectroscopy Beamline 
and Station
Main Technical Parameters
--- Spectral range, 35~800 nm
--- Spectral resolution, 0.2 nm
--- Irradiated size on the sample,
	 3 (horizontal) 0.23 (vertical) mm2
---  Flux, 51010 photons/s
--- Vacuum, 110-7 Pa

3.  Photochemistry Beamline and Station
Main Technical Parameters
--- Wavelength ranges, Gating with 2400 1/mm,	 
	 35~120 nm, 1200 1/mm, 100~250 nm, 600  
1/mm, 	 140~600 nm
--- Resolution power, l/Dl > 500
--- Wavelength accuracy,  0.1 nm
--- Acceptance angle, 25 (h)  5 (v) mrad
--- Spot size at sample, 3 (h)  1 (v) mm
--- Flux at sample: GPLS, slit width of 230 mm,	 
	 11011 phs/s; HBLS, slit width of 60 mm, 
	61011 phs/s
--- Vacuum, 110-7 Pa.

4.  Soft X-ray Microscopy Beamline and 
Main Technical Parameters
--- Condenser zoneplate (czp), czp23  czp32  czp45
--- Wavelength range(nm), 1.97~2.78   2.74~3.87    
--- Distance between light source and czp(mm), 	 
--- Distance between czp and pinhole(mm), 710~490

5.  Photoelectron Spectroscopy Beamline 
and Station
Main Technical Parameters
--- Photon energy range, 10~1000 eV
--- Resolution (DE/E),  < 10-3
--- Angular acceptance: Horizontal, > 15 mrad;
     Vertical, 2.5 mrad
--- Flux, 5109 ~51010 photons/sec amp  0.1% 
--- Spot size, 31 mm2 
He, Duohui	Accelerator physics & technology,
Hu, Defang	Engineering themophysics
Jin, Yuming	Accelerator physics
Li, Guihe	Vacuum physics & technology
Li, Yuxiong	Health physics, Radiation 
Liu, Naiquan	Accelerator Physics, Synchrotron 
		Radiation Source
Liu, Zuping	Accelerator physics
Lu, Shengkuan	Engineering management
Pei, Yuanji	Accelerator physics & technology
Wang, Guicheng	Electronics and control
Wang, Jinpeng	Engineering management
Xu, Pengshou	Condensed matter physics, 	
	Synchrotron radiation applications
Zhang, Guodong	Accelerator technology
Zhang, Wu	Accelerator physics and technology
Zhang, Xinyi	Condensed matter physics, 	
	Synchrotron  radiation applications
Zhang, Yunwu	Physical organic chemistry, 	
	Synchrotron radiation applications
Zhou, Yingxue	Condensed matter physics, 	
	Synchrotron radiation applications

Associate Professors
Dong, Sai	Accelerator physics and 
Feng,Lanlin	Accelerator engineering and 	
Fu, Luxin	Electronics and control
Fu, Shaojun	Optical engineering and 
Hu, Shengsheng	Project management and 	
	accelerator control
Hu, Shouming	Accelerator control  
Hu, Yiguan	Microelectronics and 		
Jia, Qika	Accelerator physics and FEL
Jiang, Daoman	Accelerator vacuum physics and 	
Jiang, Dikui	Accelerator vacuum physics and 	
Jin, Yongning	Scientific and technological 	
Jin, Zhengfang	Electronics
Li, Chengxiang	Condansed matter physics
Li, Weimin	Accelerator physics and 
Lu, Lijun	Soft X-ray and vacuum 	ultraviolet 
	optics and technology
Luo, Xuefang	Accelerator engineering and 	
Mai, Ruqi	Engineering management
Pan, Guoqiang	Condansed matter physics
Shen, Xiaofeng	Accelerator physics and 
Sheng, Liusi	Physical organic chemistry and SR 
Shi, Junyan	Condansed matter physics and SR 
Tian, Baoying	Accelerator control & computer 
Tian, Yangchao	Micromachining and SR 
Wang, Junhua	Accelerator beam diagnostic
Wang, Wei	Accelerator engineering and 	
Wang, Xiangqi	Accelerator physics & technology
Wang, Yong	Vacuum physics and technology
Wu, Jinqi	Accelerator control
Xia, Andong	Condansed matter physics
Xie, Rongsheng	Accelerator control
Xu, Bin	Vacuum technology and radiation 
Xu, Chaoyin	Design and engineer of beam lines
Xu, Shihong	Condansed matter physics and SR 
Xu, Weimin	Instrument and control of 
	synchrotron radiation beam lines
Xu, Xilin	Instrument and control of 	
	synchrotron radiation beam lines
Yan, Heping	Accelerator physics & technology
Yao, Chenggui	Accelerator physics & technology
Yin, Shougen	Civil engineering
Zhang, Yunxiang	Accelerator physics and RF
Zhou, Huifeng	Mechinery design and engineer

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