<html><head><meta http-equiv="Content-Type" content="text/html charset=windows-1252"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Thank you George. Indeed is not a negligible amount...<br class=""><div apple-content-edited="true" class="">
<div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">---------------------------------------------------<br class=""># Patrizia Rossi<br class=""># Jefferson Lab <br class=""># 12000 Jefferson Avenue<br class=""># Suite 5<br class=""># Newport News VA 23606 (USA)<br class=""># e-mail: <a href="mailto:rossi@jlab.org" class="">rossi@jlab.org</a><br class=""># phone: +1 (757) 269 7740<br class=""># fax: + 1 (757) 269 5800</div><div style="color: rgb(0, 0, 0); letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""># cell: +1 (757) 528 7606<br class=""><br class=""><br class=""><br class=""></div>
</div>
<br class=""><div><blockquote type="cite" class=""><div class="">On 05/apr/2018, at 13:10, George Jacobs <<a href="mailto:jacobsg@jlab.org" class="">jacobsg@jlab.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class="">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252" class="">
<div text="#000000" bgcolor="#FFFFFF" class="">
Hi Patrizia,<br class="">
<br class="">
I believe the last quote was ~$140 per Kg, so 400 kg would be
~$56,000. This quote is expired. A new quote would be required.<br class="">
<br class="">
George<br class="">
<br class="">
<div class="moz-cite-prefix">On 4/5/2018 12:19 PM, Patrizia Rossi
wrote:<br class="">
</div>
<blockquote type="cite" cite="mid:644AFAC5-A57B-4673-B04C-EC0C4B292182@jlab.org" class="">
<meta http-equiv="Content-Type" content="text/html;
charset=windows-1252" class="">
Dear George,
<div class=""><br class="">
</div>
<div class="">thank you very much for your assessment concerning
the C4F10 gas needed to run 1 or 2 LTCC sectors in the Fall.</div>
<div class="">May you please remind me how much 400Kg would cost?</div>
<div class=""><br class="">
</div>
<div class="">thanks</div>
<div class="">patrizia</div>
<div class=""><br class="">
<div apple-content-edited="true" class="">
<div style="letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">---------------------------------------------------<br class="">
# Patrizia Rossi<br class="">
# Jefferson Lab <br class="">
# 12000 Jefferson Avenue<br class="">
# Suite 5<br class="">
# Newport News VA 23606 (USA)<br class="">
# e-mail: <a href="mailto:rossi@jlab.org" class="" moz-do-not-send="true">rossi@jlab.org</a><br class="">
# phone: +1 (757) 269 7740<br class="">
# fax: + 1 (757) 269 5800</div>
<div style="letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""># cell: +1
(757) 528 7606<br class="">
<br class="">
<br class="">
<br class="">
</div>
</div>
<br class="">
<div class="">
<blockquote type="cite" class="">
<div class="">On 05/apr/2018, at 12:01, Amrit Yegneswaran
<<a href="mailto:yeg@jlab.org" class="" moz-do-not-send="true">yeg@jlab.org</a>> wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="">
<div style="font-family: tahoma,new york,times,serif;
font-size: 14pt; color: #009900" class="">
<div class="">george,<br class="">
</div>
<div class="">good e-mail.<br data-mce-bogus="1" class="">
</div>
<div class="">question is even if we start procurement
today will we have the gas in time, or will we have
to say goodbye to the LTCC, temporarily at least!<br data-mce-bogus="1" class="">
</div>
<div class="">amrit<br data-mce-bogus="1" class="">
</div>
<div class=""><br class="">
</div>
<hr id="zwchr" data-marker="__DIVIDER__" class="">
<div data-marker="__HEADERS__" class=""><b class="">From:
</b>"George Jacobs" <<a href="mailto:jacobsg@jlab.org" class="" moz-do-not-send="true">jacobsg@jlab.org</a>><br class="">
<b class="">To: </b>"Maurizio Ungaro" <<a href="mailto:ungaro@jlab.org" class="" moz-do-not-send="true">ungaro@jlab.org</a>>,
"Stepan Stepanyan" <<a href="mailto:stepanya@jlab.org" class="" moz-do-not-send="true">stepanya@jlab.org</a>><br class="">
<b class="">Cc: </b>"dsg-ltcc" <<a href="mailto:dsg-ltcc@jlab.org" class="" moz-do-not-send="true">dsg-ltcc@jlab.org</a>><br class="">
<b class="">Sent: </b>Thursday, April 5, 2018
11:53:58 AM<br class="">
<b class="">Subject: </b>Re: [Dsg-ltcc] LTCC S5
test, C4F10 usage update<br class="">
</div>
<div class=""><br class="">
</div>
<div data-marker="__QUOTED_TEXT__" class="">Hi Mauri,<br class="">
<br class="">
If there are plans to run the LTCC this Fall using
C4F10 gas, you will need to purchase an additional
supply of this gas.<br class="">
<br class="">
I estimate that there will be <30kg of gas
remaining in the supply tank at the end of this run.
This amount of gas may not be sufficient to refill
the S5 LTCC prior to running in the fall.<br class="">
<br class="">
Assuming an average leak rate of 0.5 kg/day for LTCC
S5 and the 75 Kg required to fill the sector, with a
200 day run time, an additional 175 Kg of C4F10 gas
should be purchased in order to operate the S5
LTCC. The start of the procurement process should
not be excessively delayed due to the potentially
long lead time.<br class="">
<br class="">
If the run plan includes a 2nd LTCC sector,
additional gas will be required. Using the same
assumptions as for S5, a minimum of 175kg plus a
contingency of 75kg, a total of 225kg should be
purchased for this 2nd sector. This would bring the
total minimum amount of gas required to 400 kg, in
order to operate 2 LTCC sectors for 100 days with
some small contingency to account for a small
increase in the detector leak rate.<br class="">
<br class="">
If a 2nd LTCC sector is in the run plan, the leakage
rate of this sector should be minimized prior to
filling with C4F10 gas. Using our S5 experience as a
guide we can assume that the S6 position will fill
and operate the similarly if the box is leak tight.
<br class="">
<br class="">
There is significant additional complexity for the
S2-S3 location. If we take into account that the
"nose" area of the LTCC box is where the majority of
the leakage is concentrated, we can assume that the
S2 and S3 position may have a larger leak rate due
to the increased pressure at the "nose" due to the
S2-S3 orientation. <br class="">
<br class="">
There is also some uncertainty as to how efficiently
the S2-S3 volume will fill with a shorter vent line
due to the increase in height location of the S2-S3
volumes. Also, due to the orientation of the volume
and location of the gas lines, there will be no
direct measure of the pressure inside the detector
volume or fill level associated with it as we have
for S5 or S6. Pressure control may not be as
straight forward as it is for S5.<br class="">
<br class="">
The S2-S3 bubbler will need to be relocated to the
top of the fwd carriage to become the vent bubbler.
The vent bubbler location for S2-S3 will require an
elevated shelf to maximize the separation column
height for the C4F10 gas during filling.<br class="">
<br class="">
Cheers,<br class="">
George<br class="">
<br class="">
<br class="">
<div class="moz-cite-prefix">On 3/20/2018 1:58 PM,
Maurizio Ungaro wrote:<br class="">
</div>
<blockquote cite="mid:D6E38C56-314E-41CB-B66A-7957CD306F92@jlab.org" class="">Thanks George, these are all good news.
<div class=""><br class="">
</div>
<div class="">Indeed we need to address your
questions at the end.</div>
<div class=""><br class="">
</div>
<div class="">Mauri</div>
<div class=""><br class="">
</div>
<div class="">
<div class=""><br class="">
<blockquote class="">
<div class="">On Mar 20, 2018, at 12:56 PM,
George Jacobs <<a href="mailto:jacobsg@jlab.org" class="" target="_blank" data-mce-href="mailto:jacobsg@jlab.org" moz-do-not-send="true">jacobsg@jlab.org</a>>
wrote:</div>
<br class="Apple-interchange-newline">
<div class="">
<div class="">Please find attache power
point update of the C4F10 gas usage for
the single sector test.<br class="">
<pre class="moz-signature">--
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" target="_blank" data-mce-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" target="_blank" data-mce-href="https://userweb.jlab.org/%7Ejacobsg" moz-do-not-send="true">https://userweb.jlab.org/~jacobsg</a>
</pre>
</div>
<span id="cid:ACC0A983-C502-4D61-B937-899D22CA2407@jlab.org" class=""><LTCC Single Sector Test
Status-20Mar2018.pptx></span>_______________________________________________<br class="">
Dsg-ltcc mailing list<br class="">
<a href="mailto:Dsg-ltcc@jlab.org" class="" target="_blank" data-mce-href="mailto:Dsg-ltcc@jlab.org" moz-do-not-send="true">Dsg-ltcc@jlab.org</a><br class="">
<a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/dsg-ltcc" target="_blank" data-mce-href="https://mailman.jlab.org/mailman/listinfo/dsg-ltcc" moz-do-not-send="true">https://mailman.jlab.org/mailman/listinfo/dsg-ltcc</a><br class="">
</div>
</blockquote>
</div>
<br class="">
</div>
</blockquote>
<br class="">
<pre class="moz-signature">--
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" target="_blank" data-mce-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" target="_blank" data-mce-href="https://userweb.jlab.org/~jacobsg" moz-do-not-send="true">https://userweb.jlab.org/~jacobsg</a>
</pre>
<br class="">
_______________________________________________<br class="">
Dsg-ltcc mailing list<br class="">
<a href="mailto:Dsg-ltcc@jlab.org" class="" moz-do-not-send="true">Dsg-ltcc@jlab.org</a><br class="">
<a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/dsg-ltcc">https://mailman.jlab.org/mailman/listinfo/dsg-ltcc</a><br class="">
</div>
</div>
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
</blockquote>
<br class="">
<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>
</div>
</div></blockquote></div><br class=""></body></html>