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BL04C1

Synchrotron Radiation Circular Dichroism

A vacuum-ultraviolet bending-magnet beamline for circular dichroism (CD) experiments has been designed. To maximize the photon flux and minimize the focused beam size, a cylindrical mirror and a cylindrical grating with independent optical functions are utilized. The beamline can collect a 30 mrad horizontal by 7 mrad vertical solid angle of synchrotron radiation. By using a 600 grooves/mm grating, the calculated photon flux is greater than 1×1013 photons/sec for the spectral range from 130 nm to 330 nm with the energy resolving power set at 1000. The linear polarization degree is better than 75% and can be increased to 90% by reducing the vertical acceptance angle down to 2 mrad. This beamline can provide photon flux as high as the best synchrotron CD beamlines in the world while offers simultaneously a smaller focused beam size.

►Contact Information
If you have any technical concerns, please contact us!

BL04C1 Spokesperson:
Lin, Yi-Hung (yihung@nsrrc.org.tw, +886-3-578-0281 Ext: 3190, 1042)

 
BL04C1 Beamline Manager:
Lin, Yi-Hung (yihung@nsrrc.org.tw, +886-3-578-0281 Ext: 3190, 1042)
 

►Technical Information

Operational (general use)
(Open in 2010)
%Time available (general use)
90%
Experiments
Synchrotron Radiation Circular Dichroism
Source
Bending Magnet
Ring Current(mA)
360 mA
Average Beam Lifetime
Infinite Under NSRRC Top Up Conditions
EnergyRange
4 ~ 10 eV
Resolving Power
1000
Beam Size
FWHM: 0.4 mm (H) x 0.6 mm (V)
Optics
Tangential Cylindrical horizontal focus mirror and Tangential Cylindrical Grating
Flux
1 x 10E(13)
Wavelength Min (Å)
1300
Wavelength Max (Å)
3300
Mirrors
Al + MgF2
Biohazard
Contact in Advance
Hardware
PC Running Windows
 
Original Design Information
 
 
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