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congrats tyler et.al.</div>
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<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> dsg-eic_dirc <dsg-eic_dirc-bounces@jlab.org> on behalf of Tyler Lemon via dsg-eic_dirc <dsg-eic_dirc@jlab.org><br>
<b>Sent:</b> Thursday, June 20, 2024 4:58 PM<br>
<b>To:</b> dsg-eic_dirc@jlab.org <dsg-eic_dirc@jlab.org><br>
<b>Cc:</b> Dave Gaskell <gaskelld@jlab.org>; Neville Malabre-O'Sullivan <nevilleo@jlab.org>; Andrew Lumanog <andrewl@jlab.org>; Ed Folts <folts@jlab.org><br>
<b>Subject:</b> [dsg-eic_dirc] EIC DIRC laser lab - successfully completed interlock system check and laser power on test</font>
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Hello,</div>
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Today, we performed a interlock system check and basic "power on" test of the laser in the EIC DIRC quality assurance (QA) lab.</div>
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The interlock system check involved reviewing the system and its operation with ES&H representatives and any users, and then exercising all of the interlocks to verify they work correctly.</div>
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Everything worked as expected and we were given approval to go ahead with the power on test of the laser.</div>
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For the power on test, we used a power meter and beam viewer with a webcam to remotely monitor the output of the laser from outside of the controlled area.</div>
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We tested both the 442-nm output and the 325-nm output of the laser.</div>
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The laser behaved as expected for both wavelengths.</div>
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With this successful test, we now can confirm that the laser works and at a minimum outputs a beam whose power is known.</div>
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The next step for the laser lab is to complete the EPAS for the quartz bar QA procedure.</div>
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Once that EPAS is completed, reviewed, and issued, we will schedule the final walk through and approval of the system.</div>
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-Tyler</div>
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