The first general user call for STXM experiments will open on September 14th, 2021 with a deadline of October 5th, 2021. The beamtime will be scheduled for March 2022 – August 2022. The amount of time is limited, due to ongoing commissioning tasks and experiments taken place alongside.

Call for proposals for VT22

Commissioning of the beamline started in early 2020 and the beamline saw first light on March 17. During the autumn of 2020, the beamline performed its first commissioning user experiment. The commissioning was, however, interrupted by a water leak in the monochromator, and the subsequent shutdown of the lab in early 2021 as a consequence of the Covid pandemic. The commissioning phase is now resumed, and commissioning tasks and experiments will continue for at least HT21 and VT22. The new call for proposals is therefore limited in scope, but for the first time open to general users.

The photon energy available at SoftiMAX will be 275 eV to 2500 eV, however, it will be limited in this call to experiments between 275 – 1600 eV, with only a few experiments focused on the carbon K-edge. The only available detector will be the PMT detector for STXM absorption measurements. We currently have 3 zone plates available, producing spot sizes at the sample between 20-60 nm, which will set the spatial resolution for the experiment. The choice is dependent on energy range(s) needed and resolution required.

We envision users bringing ready-made samples fixated on Si3N4 membranes (recommended thickness 50-100nm) or TEM grids. Users are also expected to have some experience in the relevant data analysis.

Proposals must be submitted via the MAX IV DUO system, however, we strongly encourage interested users to contact the beamline staff to discuss their experiments prior to submission.

Acknowledgements

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