NanoMAX is a Hard X-ray monochromatic nanoprobe experimental station at MAX IV, set for best performance between 8 and 15 keV.

After the pink photon beam is generated at the Undulator, the X-ray beam is cut by a set of slits to define the angular aperture. Then, a set of two mirrors focus the beam first vertically and after horizontally to the position of the secondary source aperture (SSA), 25.2 m upstream from the center of the last focusing mirror. In between, a horizontal Bragg diffracting crystal Si (111) monochromator is used to reduce the bandwidth of the X-ray beam and select the working energy in between 5-28 keV.

At the SSA position the beam is cut to select the coherent part of the beam, generating a new virtual source for the experimental stations.

NanoMAX optics layout
NanoMAX optics layout

Photon flux measured in the focus of the diffraction endstation at 300 mA ring current. Data were collected 2021. Below the red curve are measured focal sizes in nm and corresponding setting of the secondary source aperture, in um.