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Hello,</div>
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>From meetings, it sounds like we'll plan to repeat the nitrogen and air-cooling distribution set up for RICH-II that was used for RICH-I. Before we proceed with buying things, can someone review set up below, specifically the highlighted items and questions?</div>
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<i><u>Nitrogen (N2) supply set up:</u></i></div>
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<li>One 1/2" outer diameter (OD) nylon tube for main N2 supply</li><li style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Main N2 supply line branches off into two 1/2" OD lines at detector</li><li style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Two lines enter RICH N2 volume, one at the right cable raceway, the other at the left cable raceway</li><li style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Immediately inside the N2 volume on both sides, there is a small <span style="background-color: rgb(255, 255, 0);">
store-brought manifold </span>that splits the 1/2" OD line into <span style="background-color: rgb(255, 255, 0);">
???? 1/4" OD lines</span> of equal length<br>
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The ???? 1/4" OD lines are routed down the front panel of the RICH to blow N2 across aerogel tiles</li><ol style="list-style-type: lower-alpha;">
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<span style="background-color: rgb(255, 255, 0);">1/4" OD lines are held in place by a specially designed bracket</span><br>
</li></ol>
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<span style="background-color: rgb(255, 255, 0);">One bubbler </span>is attached to detector shell through a connector at one of the cable raceways for N2 exhaust<br>
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<u><i>N2 supply questions:</i></u><br>
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<li><span>How many 1/4" OD tubes do we want for final, internal, distribution?</span></li><ol style="list-style-type: lower-alpha;">
<li><span>I seem to remember six from the previous RICH, is this correct?</span></li></ol>
<li><span>For the manifold that splits the 1/2" OD line into the 1/4" OD lines, do we have any on hand or left over from RICH-1?</span></li><li><span>Is there a specific part that should hold the 1/4" OD lines inside the detector? Or adhesive cable mounts and zip ties sufficient?<br>
</span></li><li><span>Should the bubbler connect to only one cable raceway exhaust point? Or should the exhaust mirror the input with exhaust points being on both cable raceways and then tied to a T connection and then the bubbler.<br>
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<u><i>Air-cooling supply set up:</i></u></div>
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<li><span>Two <span style="background-color: rgb(255, 255, 0);">???? OD nylon supply tubes</span> from air-cooling panel to detector
<span style="background-color: rgb(255, 255, 0);">with disconnect at detector</span></span></li><li style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
One supply line goes to right cable way on detector shell, second supply line goes to left cable way on detector shell</li><li style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
On each side <span style="background-color: rgb(255, 255, 0);">???? OD supply </span>
line continues down cable way to electronic panel (EP)</li><li style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
In EP, the nylon supply lines connect to a <span style="background-color: rgb(255, 255, 0);">
stainless steel pipe manifold </span>that directs airflow over electronics</li></ol>
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<div><i><u>Air-cooling supply questions:</u></i></div>
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<li>In RICH-1, we used 1/2" OD nylon tubing for main supply lines from panel to detector. What size will be used for RICH-II?</li><li>Do we want some sort of disconnect at the detector to make it easier during to move to Hall B?</li><li>Should same dimensions from RICH-I air-cooling manifold in EP be used for RICH-II? Dimensional drawing from RICH-I is attached.</li></ol>
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<div><i><u>General questions:</u></i></div>
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<li>I know Hall B Engineering is taking care of any changes to the air-cooling panel and N2 panel to accommodate RICH-II. Does this include taking care of providing the piping from distribution panels to RICH (item 1 in both N2 supply set up and air-cooling
supply set up sections)? <span style="background-color: rgb(255, 255, 255);"></span></li><li><span style="background-color: rgb(255, 255, 255);">Is there any plan for air-cooling compressor's water drain in the EEL?</span></li><ol style="list-style-type: lower-alpha;">
<li>Refresher on drain: the compressor's drain is a forceful ejection of water that happens every few minutes while the compressor is running.</li><li>Last time we used a 5-gallon water jug with a tube connected to the compressor that had to be emptied every morning</li><li>Would there be a way we can get a "permanent" drain installed, as in something where we don't have to empty a container every day, like a drain line running outside or to an existing floor drain in the EEL?<br>
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<div>-Tyler<br>
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