X-ray source and optics
The detailed design of the beamline is still in development. Therefore, the description below is based on the current design concepts and is subject to change.
The DanMAX undulator is designed to have a maximum brilliance of 35 keV. A 3 m in-vacuum undulator with a short period has been chosen which will deliver 35 keV radiation from the 13th harmonic.
|Type||In-vacuum hybrid undulator (IVU16)|
|Magnetic material||NMX-S41EH+Dy Diffusion/VP|
|Pole material||Vanadiun Perndur|
|Magnetic Length||3 m|
|# of Periods||187|
|Minimum magnetic gap||4 mm|
|Total power at minimum gap and 500 mA ring current||~11 kW|
|Power in 100h×100v µrad2 (the Front End acceptance)|
at minimum gap and 500 mA ring current
The optics will transmit a beam energy of 15–35 keV with two different energy resolution modes; high intensity–low resolution (ΔE/E ~ 10-2) and high resolution–lower intensity (ΔE/E ~ 10-4).
The beam can be focused, collimated and even expanded using compound refractive lenses made from Be.
|Front end mask||100h×100v µrad2|
|Low-E filter||Fixed watercooled diamond|
|Narrow energy bandpass monochromator||Cryo-cooled double bounce Si111 crystal monochromator with fixed exit (ΔE/E ~10-4)|
|Wide energy bandpass monochromator||Watercooled double bounce multi-layer monochromator with fixed exit (ΔE/E ~10-2)|
|Collimating and focusing optics||Be compound refractive lenses in both the optics hutch and the experimental hutch|