light sources
テキスト ボックス:   LIGHT SOURCE (U36)    テキスト ボックス:   LIGHT SOURCE (U20)   

PF-AR NW14A

Vertical: 241 mm (FWHM)

Horizontal: 437 mm (FWHM)

（source divergence: 0.32 x 0.05 mrad）

（focusing ratio: 4.53:1）

 
テキスト ボックス:   BEAM SIZE AT THE SAMPLE POSITION テキスト ボックス:   DOUBLE UNDULATORS 

In-vacuum Undulator with period length of 20 mm (U20)

The U20 gives the 1st harmonic in the energy range of 13-20 keV. The energy bandwidth of the 1st harmonic is ΔE/E ~10-1-10-2, which can be utilized as ‘narrow-bandwidth white beam’ or ‘wide-bandwidth monochromatic beam’ with photon flux of ~1015 photons/sec.

calculated brilliance spectrum of U20

calculated brilliance spectrum of U36

In-vacuum Undulator with period length of 36 mm (U36)

The U36 covers an energy range of 5-25 keV with 1st, 3rd, and 5th harmonics, which is used as a tunable and intense monochromatic X-ray source by using a double-crystal monochromator and a focusing mirror. The typical photon flux of the monochromatic beam is estimated as ~1012 photons/sec.

Measured photon flux spectrum of U36

Measured photon flux spectrum of U20

NW14A has double undulators with the different period length, U36 and U20.