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OK, then it may be useful to increase the flow rate up to 13.0 slm,
or 1 volume exchange per day. This may be the flow rate we use
during future high luminosity runs.<br>
<br>
George<br>
<br>
<div class="moz-cite-prefix">On 1/25/2017 1:14 PM, Youri Sharabian
wrote:<br>
</div>
<blockquote
cite="mid:326076853.2048264.1485368091135.JavaMail.zimbra@jlab.org"
type="cite">
<style> body {height: 100%; color:#000000; font-size:12pt; font-family:arial,helvetica,sans-serif;}</style>
<div>
<div>Hi George,<br>
</div>
<div><br>
</div>
<div>Yes, of course. We just started from 2 slm and gradually
are going up. </div>
<div>We want to see transition from low flow rate to the
recommended 6.5 slm.</div>
<div>Thank you.</div>
<div> Youri<br data-mce-bogus="1">
</div>
</div>
<div><br>
</div>
<div>----- Original Message -----<br>
From: George Jacobs <a class="moz-txt-link-rfc2396E" href="mailto:jacobsg@jlab.org"><jacobsg@jlab.org></a><br>
To: <a class="moz-txt-link-abbreviated" href="mailto:dsg-htcc@jlab.org">dsg-htcc@jlab.org</a>, Bob Miller <a class="moz-txt-link-rfc2396E" href="mailto:rmiller@jlab.org"><rmiller@jlab.org></a>,
Stepan Stepanyan <a class="moz-txt-link-rfc2396E" href="mailto:stepanya@jlab.org"><stepanya@jlab.org></a>, Volker Burkert
<a class="moz-txt-link-rfc2396E" href="mailto:burkert@jlab.org"><burkert@jlab.org></a>, Youri Sharabian
<a class="moz-txt-link-rfc2396E" href="mailto:youris@jlab.org"><youris@jlab.org></a><br>
Sent: Wed, 25 Jan 2017 10:08:41 -0500 (EST)<br>
Subject: Re: HTCC gas flow rate for KPP<br>
</div>
<div><br>
</div>
<br>
Hi Youri,<br>
<div><br>
</div>
<br>
I see you have increased the flow rate to 5 slm. I will again<br>
recommend that you increase this flow to a minimum value of 6.5
slm.<br>
<br>
<div><br>
</div>
<br>
George<br>
<div><br>
</div>
<div class="moz-cite-prefix">On 1/23/2017 2:53 PM, George Jacobs<br>
wrote:<br>
</div>
<blockquote
cite="mid:10d358e7-d995-a3a6-4a92-0bc9edd6f222@jlab.org"><br>
<br>
Hi Youri,<br>
<div><br>
</div>
<br>
I recommend you increase your CO2 flow rate. The current rate of
2<br>
slm is too low. I recommend a flow of 6.5 slm until the KPP run <br>
is completed.<br>
<div><br>
</div>
<br>
The calculated flow rates for the HTCC are as follows;<br>
<div><br>
</div>
Purge Flow - 20 slm - 1.5 volume exchanges per day- the detector<br>
volume will be purged in 3.4 days<br>
<div><br>
</div>
Running Flow - 6.5 slm - 0.5 volume exchanges per day <br>
<div><br>
</div>
Reduced Flow - 3.25 slm - 0.25 volume exchanges per day<br>
<div><br>
</div>
<br>
George<br>
<pre class="moz-signature">--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
</pre>
<div><br>
</div>
<pre class="moz-signature">(office) 757-269-7115
</pre>
<div><br>
</div>
<pre class="moz-signature">(cell) 757-876-0480
</pre>
<div><br>
</div>
<pre class="moz-signature">(email) <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:jacobsg@jlab.org" target="_blank" data-mce-href="mailto:jacobsg@jlab.org">jacobsg@jlab.org</a>
</pre>
<div><br>
</div>
<pre class="moz-signature">(website) <a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://userweb.jlab.org/%7Ejacobsg" target="_blank" data-mce-href="https://userweb.jlab.org/%7Ejacobsg">https://userweb.jlab.org/~jacobsg</a>
</pre>
</blockquote>
<br>
<pre class="moz-signature">--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
</pre>
<div><br>
</div>
<pre class="moz-signature">(office) 757-269-7115
</pre>
<div><br>
</div>
<pre class="moz-signature">(cell) 757-876-0480
</pre>
<div><br>
</div>
<pre class="moz-signature">(email) <a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="mailto:jacobsg@jlab.org" target="_blank" data-mce-href="mailto:jacobsg@jlab.org">jacobsg@jlab.org</a>
</pre>
<div><br>
</div>
<pre class="moz-signature">(website) <a moz-do-not-send="true" class="moz-txt-link-freetext" href="https://userweb.jlab.org/%7Ejacobsg" target="_blank" data-mce-href="https://userweb.jlab.org/~jacobsg">https://userweb.jlab.org/~jacobsg</a>
</pre>
<div><br>
</div>
<div><br>
</div>
<div><br>
</div>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
George Jacobs
Jefferson Lab (TJNAF)
STE 12
12000 Jefferson Ave.
Newport News, VA 23606
(office) 757-269-7115
(cell) 757-876-0480
(email) <a class="moz-txt-link-abbreviated" href="mailto:jacobsg@jlab.org">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext" href="https://userweb.jlab.org/~jacobsg">https://userweb.jlab.org/~jacobsg</a></pre>
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