[dsg-eic_dirc] [Revised Logentry] Follow-up Re: Laser test successful

[tlemon at jlab.org]

Logentry Text:
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Uploading screenshots of beam viewer during test.

Fig. 1 - beam spot photo using 442 nm output after laser warms up and outputs power (time: 16:09)
Fig. 2 - beam spot photo using 442 nm output after ~5 minutes (16:15)
Fig. 3 - beam spot photo using 442 nm output after ~10 minutes (16:19)
Fig. 4 - beam spot photo using 325 nm output after laser warms up and outputs power (time: 16:24)

In Fig. 2, the yellow traces on X and Y axes are X and Y projections of the spot and the red traces are Gaussian fits of those projections.

For Fig. 4, beam viewer used is only rated for light down to 350-nm. Because of this, the camera cannot capture the actual beam spot, only give a very general shape of the beam's cross-section.


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