Undulator view

ID18 is an undulator beamline. The straight section is occupied by three "revolver" undulators with period 27 mm and 20 mm, respectively. Each of the undulators is about 1.6 m long. The vacuum beam pipe is 10 mm high and thus allows a minimum gap of 11 mm between the two magnet arrays of the undulators.

The 27 mm undulators are flexible and allow to cover all energies between 7.2 keV and 80 keV allowing to access large number of Mössbauer isotopes. The 20 mm undulators are optimized for 14.4 keV the transition energy of 57Fe.

 

57Fe, 14.413 keV

61Ni, 67.41 keV
flux in 0.1%bw @ 100mA

4.16*1014 / s

6.69*1012
Energy bandwidth

290 eV

1.6 keV
Horizontal rms divergence

12.7 μrad

11.0 μrad
Vertical rms divergence

8.2 μrad

5.1 μrad

 

Additional information: