7T-MPW-EDDI

7T-MPW-EDDI

The beamline is operated in the energy-dispersive mode of diffraction using the direct white photon beam provided by a superconducting 7T multipole wiggler. The wigglers critical energy is 13.5 keV at 1.7 GeV. The figure below shows its energy spectrum recorded directly without any attenuators in the beam by means of a Germanium solid state detector (Canberra).

wiggler spectrum recorded at the EDDI beamline

wiggler spectrum recorded at the EDDI beamline

Liste von Publikationen
Beamline data
Segment L04
Location (Pillar) 5.2
Source 7T-MPW (Multipole Wiggler)
Monochromator direct beam (white beam)
Energy range 5 - 150 keV
Energy resolution Ge solid state detector (Canberra):
160 eV (at 10 keV) and 420 eV (at 100 keV)
Flux 3·1012 (at 10 keV) and 1·1010 (at 100 keV)
(photons/s at 300 mA through a pinhole of 1x1mm2)
Polarisation horizontal
Divergence horizontal ± 1.2 mrad
Divergence vertical ± 0.5mrad
with a double slit system (30μm) Δθ ≈ 0.003° mrad
Focus size (hor. x vert.) focussed beam not possible
beam cross-section: max. 4 x 4 mm2, usually 0.5-1 mm2
Fixed endstation EDDI
Flexible endstation(s) no
User endstation not possible
Distance Focus/last valve focussed beam not possible
distance sample/last valve: 6000 mm
Height Focus/floor level 1400 mm
Beam availability 24h/d
Phone +49 30 8062 13164

A detailed beamline and experimental endstation description and a list of publications can be found here.