BL04C1
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)
►Technical Information
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Operational (general use)
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(Open in 2010)
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%Time available (general use)
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90%
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Experiments
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Synchrotron Radiation Circular Dichroism
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Source
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Bending Magnet
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Ring Current(mA)
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360 mA
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Average Beam Lifetime
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Infinite Under NSRRC Top Up Conditions
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EnergyRange
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4 ~ 10 eV
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Resolving Power
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1000
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Beam Size
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FWHM: 0.4 mm (H) x 0.6 mm (V)
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Optics
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Tangential Cylindrical horizontal focus mirror and Tangential Cylindrical Grating
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Flux
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1 x 10E(13)
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Wavelength Min (Å)
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1300
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Wavelength Max (Å)
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3300
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Mirrors
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Al + MgF2
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Biohazard
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Contact in Advance
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Hardware
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PC Running Windows
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