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MEX1 Cryostat

MEX1 Cryostat

FOR PROPOSALS: PUT “CRYO”, “CRYOSTAT” ETC IN YOUR PROPOSAL TITLE

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Beamline

MEX-1

Temperatures

8 to 298 K

Up to 500 K if using the heater function

Cool down and alignment time between sample changes

~ 20 mins

Modes

Fluorescence and transmission

Energies

5 - 13.5keV good spectra

< 5 keV achievable but noisy

Sample holders

Plastic, aluminium 6061 or copper

Number of samples per holder

(Recommended) Rectangular: nine 7 mm x 3.5 mm pellets

Circular: six 7 mm diameter pellets

Customised: contact us

Example data:

Zn K edge: From room temperature (298 K) to 8 K. Spectral resolution increases as temperature decreases.

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Sample stick:

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Cryo stick. This gets inserted into the cryostat
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Top of the cryo stick, which forms a seal to maintain the sample well environment
The copper tip of the cryo stick has a heater and temperature sensor mounted within

Sample holders:

 

Considerations

The sample plates (clear) are screwed onto the cryo tail (brown). Contact us if you require the correct size sample plates.

Avoid completely covering your sample with adhesive tape Eg Kapton, as even at high energies, the tape will absorb the beam. See MEX1 Sample Preparation for mounting ideas.

Avoiding cryo stick change overs is ideal. Therefore, preparing rectangular pellets to decrease sample change overhead time will make your beamtime easier and faster.

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Plastic

 

 

 

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Metal

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(Left) Aluminium6061 cryo tails and sample plates. (Right) Copper cryo tail and sample plates. Sample plate hole diameter ~7.2 mm for 7 mm diameter pellets

 

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Other Al6061 cryo tails with different plate fittings