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Dear Bonusites,</div>
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yesterday I met Bob Miller, he asked me a couple of questions (and more in the email below) about some safety features of the RTPC and some concerns about the DMS. I appreciate to check or complete the answers I plan to send to Bob. My comments in red, answers
from me in blue.</div>
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Thank you</div>
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-Carlos</div>
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P.S. let me know if you have problems to visualize the email, I am using the Office365 features<br>
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<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Bob Miller <rmiller@jlab.org><br>
<b>Sent:</b> Monday, July 15, 2019 4:07 PM<br>
<b>To:</b> Carlos Ayerbe Gayoso<br>
<b>Subject:</b> Re: Fw: BONuS Gas port map</font>
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Hi Carlos,</p>
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I have a few more questions on the Bonus 12 target and detector gas systems:</p>
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-DMS <b><span style="color: rgb(134, 17, 6);">(this is mainly to Nathan)</span></b><br>
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<li>where are the gas connections?</li><li> is there a mounting feature on the detector, or will it sit on a shelf?<br>
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<b><span style="color: rgb(134, 17, 6);">(Bob's idea is having the DMS attached to the gas panel. I didn't said anything against, but I don't not if this possible or desirable)</span></b><br>
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<div> 3. is there any radiation shielding required?<br>
4. what is the maximum internal pressure allowed? The system currently has a 1 psi check valve to act as a relief valve; is the 1 psi acceptable?</div>
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<div>-RTPC<br>
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<li>what is the expected operating pressure in the buffer and RTPC volumes</li></ol>
<b><span style="color: rgb(0, 36, 81);">The pressure in the Drift region should be 1atm+epsilon, thus the buffer volumen should be (1atm+epsilon)+epsilon' (lightly higher than the drift region)</span></b><br>
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<div> 2. what is the maximum pressure in these volumes? An over pressure device will be added to protect the detector <br>
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<div><b><span style="color: rgb(134, 17, 6);">I don't know if we have these estimations. Nevertheless, Bob is adding extra protection to avoid overpressure, e.g. bubblers.</span></b></div>
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Regards,
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Bob</p>
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<pre class="moz-signature" cols="72">Bob Miller
Hall B Lead Engineer
Jefferson Lab
757 822-9586
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