BL-16A : Variable Polarization (Fast Switching) Soft X-ray Spectroscopy Station

Beamline group	Group 1 (Soft X-ray Spectroscopy)
Techniques	Soft X-ray Magnetic Circular & Linear Dichroism Soft X-ray Spectroscopy
Features	Right and left circular polarizations, as well as horizontal and vertical linear polarizations, are available. Fast polarization switching (10 Hz) is available between two different polarizations. 1.2 and 5 T soft X-ray magnetic circular polarization apparatus are installed for public use. Free ports are available, to which users can bring their own apparatus.
Area of research	Magnetic Thin Films Surface Science Solid-state Physics
Contacts	Kenta AMEMIYA kenta.amemiya(at)kek.jp Please change (at) to @ in the e-mail address.
Special notes	Similar energy region is covered by other stations (Undulator: BL-2A/B, 13A/B, 19A/B, Bending Magnet: BL-7A, 11A, 11D).

Source	2.5GeV PF, Twin APPLE-II Undulators
Optics	Variable-Included-Angle Varied-Line-Spacing Plane Grating Monochromator Post focusing system with a toroidal mirror
Energy range	Mainly 400 - 1500 eV
Resolution (ΔE/E)	~ 2 × 10^-4
Beam size	200 - 500 μm (H) x 50 - 100 μm (V)
Photon flux	~ 10¹¹ photons/s Calculated photon flux at a certain resolution (E/ΔE)
Instruments	Soft X-ray Magnetic Circular Dichroism (1.2 and 5 T) Depth-resolved Soft X-ray Absorption Spectroscopy
Detectors	Drain current, Microchannel plate, Silicone Drift Detector, and Soft X-ray CCD camera (depending on apparatus)
Remote / Mail-in	available
Special notes	Sample size : <~10 mm square is recommended Users instruments : acceptable Beam height : ~ 1217 mm from the floor，Pressure : <10^-4 Pa Plan view of the experimental area

K. Amemiya and T. Ohta, J. Synchrotron Rad., 11, 171 (2004), doi:10.1107/S0909049503023598 : [Monochromator]
K. Amemiya et al., AIP Conf. Proc., 1234, 295 (2010), doi:10.1063/1.3463193 : [Beamline]
K. Tsuchiya et al., J. Phys.: Conf. Ser., 425, 132017 (2013), doi:10.1088/1742-6596/425/13/132017 : [Pollarization switching (Light source)]
K. Amemiya et al., J. Phys.: Conf. Ser., 425, 152015 (2013), doi:10.1088/1742-6596/425/15/152015 : [Pollarization switching (Beamline)]
K. Amemiya, Phys. Chem. Chem. Phys., 14, 10477 (2012), doi:10.1039/C2CP41085K : [Depth-resolved Soft X-ray Absorption Spectroscopy]
M. Sakamaki and K. Amemiya, Rev. Sci. Instrum., 88, 083901 (2017), doi:10.1063/1.4986146 : [Depth-resolved Soft X-ray Absorption Spectroscopy by fluorescence-yield]

Last updated: 2021-8-23