<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
</head>
<body text="#000000" bgcolor="#FFFFFF">
<p>Dear Amrit,</p>
<p>As always, many thanks.<br>
Glenn<br>
</p>
<br>
<div class="moz-cite-prefix">On 9/13/2017 11:02 AM, Amrit
Yegneswaran wrote:<br>
</div>
<blockquote type="cite"
cite="mid:1485630236.7483495.1505314956550.JavaMail.zimbra@jlab.org">
<div style="font-family: tahoma,new york,times,serif; font-size:
14pt; color: #009900">
<div>glenn,<br>
</div>
<div><br data-mce-bogus="1">
</div>
<div>patrizia (my CO) advised me to provide the assistance.<br
data-mce-bogus="1">
</div>
<div>so, in addition to brian, pablo will be there as well.<br
data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div>amrit<br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div><br data-mce-bogus="1">
</div>
<div><br>
</div>
<hr id="zwchr" data-marker="__DIVIDER__">
<div data-marker="__HEADERS__"><b>From: </b>"Glenn Young"
<a class="moz-txt-link-rfc2396E" href="mailto:gyoung@jlab.org"><gyoung@jlab.org></a><br>
<b>To: </b>"Amrit Yegneswaran" <a class="moz-txt-link-rfc2396E" href="mailto:yeg@jlab.org"><yeg@jlab.org></a>, "Rolf
Ent" <a class="moz-txt-link-rfc2396E" href="mailto:ent@jlab.org"><ent@jlab.org></a>, "Patrizia Rossi"
<a class="moz-txt-link-rfc2396E" href="mailto:rossi@jlab.org"><rossi@jlab.org></a>, "Allison Lung" <a class="moz-txt-link-rfc2396E" href="mailto:lung@jlab.org"><lung@jlab.org></a><br>
<b>Cc: </b>"Glenn Young" <a class="moz-txt-link-rfc2396E" href="mailto:gyoung@jlab.org"><gyoung@jlab.org></a>, "Brian Eng"
<a class="moz-txt-link-rfc2396E" href="mailto:beng@jlab.org"><beng@jlab.org></a>, "Ruben Fair" <a class="moz-txt-link-rfc2396E" href="mailto:rfair@jlab.org"><rfair@jlab.org></a>,
"John Hogan" <a class="moz-txt-link-rfc2396E" href="mailto:hogan@jlab.org"><hogan@jlab.org></a><br>
<b>Sent: </b>Wednesday, September 13, 2017 8:26:36 AM<br>
<b>Subject: </b>Solenoid ramping today - need Brian<br>
</div>
<div><br>
</div>
<div data-marker="__QUOTED_TEXT__">Dear Amrit,<br>
We are going to make our second series of attempts to ramp the
solenoid today. As you know well, Brian Eng is a key person
on the power side of the solenoid. We've had excellent
support from him.<br>
<br>
We managed to get to just over 1000A yesterday (40% of top
field!) before encountering some trips due apparently to
noise on a non-superconducting splice.<br>
These necessarily trigger fast dumps. Thus we need to make
adjustments to remove these sources of inadvertent trips.<br>
We need to retune the quench detection circuits, including
voltage thresholds and time delays, before we can re-start
this morning. This includes analysis of the fast (10kHz data).
We spent much of last evening looking at plots Brian prepared.<br>
<br>
Brian is central to doing all of this, and thus we'd need to
keep him here in Hall B today so we can proceed and finish up
on the solenoid.<br>
<br>
Thanks, Glenn<br>
</div>
</div>
</blockquote>
<br>
</body>
</html>