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<p>Hi Maxime,</p>
<p>The isobutane blanket is now working and the pressure in the tank
is up to 30 psi. You can begin mixing the 10% C4H10 in argon mix.
We need to disconnect the pre-mix and check the valves are
properly lined up. <br>
</p>
<p>The CF4 is still in the bldg 90 gas cage along with the remaining
pre-mix.<br>
</p>
<p>I mounted the thermostat sensor bulb to the MFC mounting plate.
Ready for power on it. I replaced the insulation as well as I was
able. The current ambient temp is mild and each MFC makes ~
12watts of heat from the solenoid control valve, so this is good
to go. Once the thermostat is powered up, it will be ready for the
cold temps on the way. <br>
</p>
<p>Please take care manipulating the insulation behind the rack so
you do not damage the thermostat bulb. This is mounted on the left
side.<br>
</p>
<p>Thanks,</p>
<p>George<br>
</p>
<br>
<div class="moz-cite-prefix">On 12/05/2017 11:58 AM, mdefurne wrote:<br>
</div>
<blockquote type="cite"
cite="mid:85986642-97ce-a857-e33b-8a86490d2757@jlab.org">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<p>Hi Jason<br>
</p>
Thank you very much. This morning, George was working on it and I
hope the blanket is just slow to warm up and not failing.<br>
George would like to have a thermostat installed to make sure heat
tapes will not overheat the flowmeters and consequently break
them. I agree that it would be safer since we are kind of blind in
regulating the power of the heat tape.<br>
<br>
Volker, Walt, would it be possible to have it done as soon as
possible? If everything goes well for the accelerator, tomorrow
evening we have beam sent in the Hall. But I cannot use the mixing
system yet. No real test have been done with it. These tests
include checks that the mixing system works well, but also tuning
the HV setting depending on the quality of the mixture. (depend
strongly on the mixture... this is part of the "calibration" of
micromegas detectors).<br>
<br>
If we have everything we need to do the job, please try to have it
done today. I apologize for the rush but this mixing system was
supposed to be ready a long time ago and not the day prior
engineering run.<br>
<br>
Thank you,<br>
<br>
Kind regards,<br>
<br>
Maxime <br>
<br>
<div class="moz-cite-prefix">Le 05/12/2017 à 10:22, Jason
Willoughby a écrit :<br>
</div>
<blockquote type="cite"
cite="mid:1865393714.5115975.1512487349709.JavaMail.zimbra@jlab.org">
<div style="font-family: arial,helvetica,sans-serif; font-size:
12pt; color: #000000">
<div>It was completed last night, however it appears the
blanket does not work.<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div data-marker="__SIG_PRE__">Jason Willoughby<br>
FM&L Electrical Engineer<br>
Thomas Jefferson National Accelerator Facility<br>
628 Hofstadter Road STE 1<br>
Newport News, VA 23606<br>
(757)-269-5372<br>
</div>
<div><br>
</div>
<hr id="zwchr" data-marker="__DIVIDER__">
<div data-marker="__HEADERS__"><b>From: </b>"mdefurne" <a
class="moz-txt-link-rfc2396E"
href="mailto:mdefurne@jlab.org" moz-do-not-send="true"><mdefurne@jlab.org></a><br>
<b>To: </b>"Jason Willoughby" <a
class="moz-txt-link-rfc2396E"
href="mailto:jasonw@jlab.org" moz-do-not-send="true"><jasonw@jlab.org></a><br>
<b>Sent: </b>Monday, December 4, 2017 5:04:33 PM<br>
<b>Subject: </b>Re: [Dsg-mvt] Electricity for heating
blanket and heat tape<br>
</div>
<div><br>
</div>
<div data-marker="__QUOTED_TEXT__">Hello Jason,<br>
<br>
When do you think the electrician will add the plug to the
blanket and for<br>
the heat tape?<br>
<br>
Thank you,<br>
<br>
Kind regards,<br>
<br>
Maxime<br>
<br>
<br>
<br>
> George,<br>
><br>
> Since you want this done quickly, I will have to modify
the install a bit.<br>
> In order to avoid an outage and ordering a new GFCI
breaker, I will have<br>
> the electrician install a plug on the blanket cord.
This will allow it to<br>
> be plugged into a GFCI receptacle.<br>
><br>
><br>
> Jason Willoughby<br>
> FM&L Electrical Engineer<br>
> Thomas Jefferson National Accelerator Facility<br>
> 628 Hofstadter Road STE 1<br>
> Newport News, VA 23606<br>
> (757)-269-5372<br>
><br>
><br>
> From: "George Jacobs" <a class="moz-txt-link-rfc2396E"
href="mailto:jacobsg@jlab.org" moz-do-not-send="true"><jacobsg@jlab.org></a><br>
> To: "Jason Willoughby" <a
class="moz-txt-link-rfc2396E"
href="mailto:jasonw@jlab.org" moz-do-not-send="true"><jasonw@jlab.org></a><br>
> Cc: "mdefurne" <a class="moz-txt-link-rfc2396E"
href="mailto:mdefurne@jlab.org" moz-do-not-send="true"><mdefurne@jlab.org></a>,
"Matthew Marchlik"<br>
> <a class="moz-txt-link-rfc2396E"
href="mailto:marchlik@jlab.org" moz-do-not-send="true"><marchlik@jlab.org></a>,
"dsg-mvt" <a class="moz-txt-link-rfc2396E"
href="mailto:dsg-mvt@jlab.org" moz-do-not-send="true"><dsg-mvt@jlab.org></a><br>
> Sent: Friday, December 1, 2017 2:14:18 PM<br>
> Subject: Re: Electricity for heating blanket and heat
tape<br>
><br>
> Hi Jason,<br>
><br>
> Sounds good. The blanket has a built in thermostat.
Temperature is<br>
> automatically controlled for 90F.<br>
><br>
> Thanks,<br>
> George<br>
><br>
> On 12/1/2017 1:36 PM, Jason Willoughby wrote:<br>
><br>
><br>
><br>
> George,<br>
><br>
> The work is fairly simple and straight forward. I do
not think an<br>
> additional site visit is necessary. I plan on having
the blanket hard<br>
> wired to a SPST switch. Do you require a thermostat for
the blanket?<br>
><br>
><br>
> Jason Willoughby<br>
> FM&L Electrical Engineer<br>
> Thomas Jefferson National Accelerator Facility<br>
> 628 Hofstadter Road STE 1<br>
> Newport News, VA 23606<br>
> (757)-269-5372<br>
><br>
><br>
> From: "George Jacobs" <a class="moz-txt-link-rfc2396E"
href="mailto:jacobsg@jlab.org" moz-do-not-send="true"><jacobsg@jlab.org></a><br>
> To: "mdefurne" <a class="moz-txt-link-rfc2396E"
href="mailto:mdefurne@jlab.org" moz-do-not-send="true"><mdefurne@jlab.org></a><br>
> Cc: "Jason Willoughby" <a
class="moz-txt-link-rfc2396E"
href="mailto:jasonw@jlab.org" moz-do-not-send="true"><jasonw@jlab.org></a>
, "Matthew Marchlik"<br>
> <a class="moz-txt-link-rfc2396E"
href="mailto:marchlik@jlab.org" moz-do-not-send="true"><marchlik@jlab.org></a>
, <a class="moz-txt-link-abbreviated"
href="mailto:dsg-mvt@jlab.org" moz-do-not-send="true">dsg-mvt@jlab.org</a><br>
> Sent: Friday, December 1, 2017 1:16:22 PM<br>
> Subject: Re: Electricity for heating blanket and heat
tape<br>
><br>
> I have a meeting with Dr Chandler at 3pm, so, I will be
at the target gas<br>
> pad as soon as that is finished.<br>
><br>
> George<br>
><br>
> On 12/1/2017 11:19 AM, mdefurne wrote:<br>
><br>
> BQ_BEGIN<br>
> Dear George, Dear Matt,<br>
><br>
> I went this morning with Jason to take a look at what
needs to be done for<br>
> having electricity for the heating blanket and the heat
tape. Jason will<br>
> certainly go back there this afternoon with an
electrician around 3pm.<br>
> George, can you please go with them?<br>
><br>
> Once the electricity is installed for the blanket, I
will start testing<br>
> and using the mixing system. Is it OK? (I would like to
already use pure<br>
> Argon, can I?)<br>
><br>
> Kind regards,<br>
><br>
> Maxime<br>
><br>
><br>
><br>
><br>
> --<br>
> George Jacobs<br>
> Jefferson Lab (TJNAF)<br>
> STE 12<br>
> 12000 Jefferson Ave.<br>
> Newport News, VA 23606<br>
><br>
> (office) 757-269-7115<br>
><br>
> (cell) 757-876-0480<br>
><br>
> (email) <a class="moz-txt-link-abbreviated"
href="mailto:jacobsg@jlab.org" moz-do-not-send="true">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext"
href="https://userweb.jlab.org/%7Ejacobsg"
moz-do-not-send="true">https://userweb.jlab.org/~jacobsg</a><br>
><br>
><br>
> BQ_END<br>
><br>
> --<br>
> George Jacobs<br>
> Jefferson Lab (TJNAF)<br>
> STE 12<br>
> 12000 Jefferson Ave.<br>
> Newport News, VA 23606<br>
><br>
> (office) 757-269-7115<br>
><br>
> (cell) 757-876-0480<br>
><br>
> (email) <a class="moz-txt-link-abbreviated"
href="mailto:jacobsg@jlab.org" moz-do-not-send="true">jacobsg@jlab.org</a>
(website) <a class="moz-txt-link-freetext"
href="https://userweb.jlab.org/%7Ejacobsg"
moz-do-not-send="true">https://userweb.jlab.org/~jacobsg</a><br>
><br>
> _______________________________________________<br>
> Dsg-mvt mailing list<br>
> <a class="moz-txt-link-abbreviated"
href="mailto:Dsg-mvt@jlab.org" moz-do-not-send="true">Dsg-mvt@jlab.org</a><br>
> <a class="moz-txt-link-freetext"
href="https://mailman.jlab.org/mailman/listinfo/dsg-mvt"
moz-do-not-send="true">https://mailman.jlab.org/mailman/listinfo/dsg-mvt</a><br>
><br>
</div>
</div>
</blockquote>
<br>
</blockquote>
<br>
<pre class="moz-signature" cols="72">--
George Jacobs
Physics Detector Support Group
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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