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In situ focus characterization by ablation technique to enable optics alignment at an XUV FEL source
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10.1063/1.4807896
/content/aip/journal/rsi/84/6/10.1063/1.4807896
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/6/10.1063/1.4807896

Figures

Image of FIG. 1.
FIG. 1.

The diagnostics port for focus characterization: (1) the FEL beam comes from the right; (2) the optical port for ablative imprints inspection equipped with the microscope optics and the CCD is directed towards the viewer at 60° to the FEL incoming beam; (3) the port for imaging crystal inspection is directed from the viewer at 45° to the FEL beam; (4) the sample positioning is enabled by a rotatable feedthrough combined with an X-Y stage from top; (5) the X-Y stage from below allows for caustic scans.

Image of FIG. 2.
FIG. 2.

Taken image of 10 μm per division scale.

Image of FIG. 3.
FIG. 3.

Inspection of the imprints by diagnostics port (a) and by Nomarski microscope (b).

Image of FIG. 4.
FIG. 4.

Correlation plot of crater size estimation by measurements using the diagnostics port versus Nomarski microscope (a) and caustic curves (b).

Image of FIG. 5.
FIG. 5.

The beam profile taken by ablative imprints (a) and with imaging crystal (b).

Tables

Generic image for table
Table I.

Results of caustic curves parameters measured (diagnostics port) and (Nomarski microscope).

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/content/aip/journal/rsi/84/6/10.1063/1.4807896
2013-06-03
2014-04-23
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752b84549af89a08dbdd7fdb8b9568b5 journal.articlezxybnytfddd
Scitation: In situ focus characterization by ablation technique to enable optics alignment at an XUV FEL source
http://aip.metastore.ingenta.com/content/aip/journal/rsi/84/6/10.1063/1.4807896
10.1063/1.4807896
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