X-ray source and optics
On this page you will find an overview of the X-ray optics that have been designed for DanMAX. You can read more about the beamline and the optics in the detailed design report (version 2.0) here: DanMAX_DDR_v2.pdf (26 MB).
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. You can download the IVU and accelerator parameters in SPECTRA format here.
The undulator has been delivered to MAX IV by Hitachi Metals Ltd. and has passed the ‘Site Acceptance Test’. The undulator will be installed in the accelerator during the summer of 2019.
|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 optical components will be delivered by FMB Oxford Ltd. The preliminary layout is illustrated below.
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.
3D CAD model of the MAX IV standard alignment screws to be used in optics stands can be downloaded here.
|Front end mask||35h×35v 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|