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Welcome to the User Wiki for the Medium Energy X-ray Spectroscopy beamlines (MEX1 and MEX2).

The full energy range for MEX-1 is 3.5 - 13.8 keV.

The full energy range for MEX-2 is 21.1 7 - 3.2 keV.

We are not currently offering microprobe capability. The capability schedule below will be updated when the microprobe is ready to be rolled out.

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*** Potential users MUST CONTACT BEAMLINE STAFF and discuss the proposed measurements before submitting their proposal ***

Contact us at: as-mex@ansto.gov.auHow to acknowledge the MEX beamlines in your paper? See here.

For more information on MEX1 and MEX2, please see the linked pages below and the ANSTO website.

Choosing an X-ray absorption spectroscopy beamline

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For more information about the XAS Beamline, please visit the XAS User Wiki.

MEX capability schedule

MEX1 and MEX2 are new beamlines which came online in late 2022 and early 2023. As per the schedule below, we will progressively roll out their capabilities over the coming years.

Cycle 1 2024

Cycle 2 2024

Our current capability is outlined below (updated March 2024).

2. - 32 keV

MEX1	Capability	Room temperature, transmission and fluorescence. Room temperature, transmission and fluorescence.Slew scan.
	Energy range	3.5 - 13.8 keV	3.5 - 13.8 keV
	Experiment typeEx situ samples ONLY.	Ex situ samples ONLY.
MEX2	Capability Drain current in vacuum. Fluorescence in helium	Drain current in vacuum. Fluorescence in helium
	Energy range	1	.	1.7 - 3.2 keV
	Experiment type	Ex situ samples ONLY.	Ex situ samples ONLY.

Scan parameters

	MEX1	MEX2
Maximum beam size (horizontal x vertical; beam size can be reduced from the maximum using slits)	5 x 0.5 mm	5 x 3 mm
Estimated scan duration	~20 mins XANES, ~35 mins EXAFS	~30 mins XANES