BL9A High-intensity and Low-energy XAFS

Techniques

XAFS(X-ray Absorption Fine Structure)

• Energy range: 2.1 – 15 keV (2.1 – 4 keV with SX mode)
• Transmission mode: QXAFS
• Fluorescent mode: Lytle detector, Multi Ge-SSD
• Conversion electron yield (CEY) mode: Available with SX mode

Other experimental with monochromatized X-ray

• Please contact us before experiment

Light source

PF Bending magnet #9

• Ring energy: 2.5 GeV
• Max. current: 450 mA (Usually Top-up operation)
• Critical energy: 4 keV
• Horizontal acceptance: 3 mrad

Beamline optics

Monochromator

• Si(111) Water-cooled double crystal
• Energy range: 2.1 – 15 keV
• Cam-drive (Kohzu system)

Focusing system

• Double Bent conical mirror (Rh coated)
  for collimating and forcusing
• Standard beam size: 0.5H x 0.3V mm

Others

• Double flat morror (Ni coated) for higher harmonics reduction

Performance

Focused and Monochromatized mode

• Energy range: 4 – 15 keV
• Energy resolution: ΔE/E～2×10^-4 (9 keV)
• Photon flux at sample position: 6×10¹¹ phs/s (7 keV)

Soft X-ray(SX) mode (Focused and Monochromatized)

• Energy range: 2.1 – 4 keV
• Photon flux at sample position: 6×10¹⁰ phs/s (2.5 keV)

Experimantal station

Experimental hutch

• Hatch size: 2.6L x 2.8W x 2.5H m
• Door size: 1.88W x 2.39H m

Standard setup

• Flat table size: 1500L x 1000W mm
• XAFS setup: Ionization chumber, Ge-SSD, Cryocooler
• SX setup: He filled CEY sample chamber

Beamline manager

• 阿部 仁 / ABE Hitoshi (KEK-PF)
  hitoshi.abe[@]kek.jp