<html><body><div style="font-family: arial, helvetica, sans-serif; font-size: 12pt; color: #000000"><div>When the transition occurs is unclear. We should act fast.<br></div><div>-H<br data-mce-bogus="1"></div><div><br></div><hr id="zwchr" data-marker="__DIVIDER__"><div data-marker="__HEADERS__"><b>From: </b>"Arne Freyberger" <freyberg@jlab.org><br><b>To: </b>"Hari Areti" <areti@jlab.org><br><b>Sent: </b>Monday, March 13, 2017 2:02:37 PM<br><b>Subject: </b>Re: [Isotope-prod] Experiment in the injector<br></div><br><div data-marker="__QUOTED_TEXT__">Hari,<br>
This is fine and OPS will support this program if we remain idle at
2K. Once we hear that beam operations are terminated for Spring,
we will transition to 4K relatively quickly. <br>
<br>
We cannot generate 18.5 MeV of beam energy without 2K cryogens.<br>
<br>
Arne<br>
<br>
<div class="moz-cite-prefix">On 03/13/2017 01:20 PM, Hari Areti
wrote:<br>
</div>
<blockquote cite="mid:1247014787.2954281.1489425612128.JavaMail.zimbra@jlab.org">
<div style="font-family: arial, helvetica, sans-serif; font-size:
12pt; color: #000000">
<div><br>
I am going to ask Ops for time at the injector for irradiating
Gallium.<br>
</div>
<div><br>
</div>
<div>Let is fix a few things and work out the logistics. </div>
<div><br>
</div>
<div>Requisites:<br>
</div>
<div>Do we have enough target material? (PD, GK)<br>
</div>
<div>Do we have BNNT holders? (KJ)<br>
</div>
<div><br>
</div>
<div>Beam parameters<br>
</div>
<div><br>
</div>
<div>1. Beam Energy 18.5 MeV<br>
</div>
<div>2. Beam current ?<br>
</div>
<div>3. Beam time?<br>
</div>
<div><br>
</div>
<div>Logistics<br>
</div>
<div><br>
</div>
<div>Test plan ( revive the previous one, if we had one)<br>
</div>
<div>Do we have the means to measure energy and beam size? (I
will check)<br>
</div>
<div>Assuming that VCU collaborators have time, how do we ship
the<br>
</div>
<div>irradiated sample?<br>
</div>
<div><br>
</div>
<div>Anything else?<br>
</div>
<div><br>
</div>
<div>Once our thoughts are organized, should we meet (even on
the phone)<br>
</div>
<div>for a few minutes to organize the experiment?<br>
</div>
<div><br>
</div>
<div>Thanks.<br>
</div>
<div><br>
</div>
<div>-H<br>
</div>
</div>
<br>
<fieldset class="mimeAttachmentHeader"></fieldset>
<br>
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</pre>
</blockquote>
<br>
<pre class="moz-signature">--
Arne Freyberger
Director of Accelerator Operations
Jefferson Lab Office: (757) 269-6289
12000 Jefferson Avenue Cell: (757) 876-6289
Newport News, VA 23606 Email: <a class="moz-txt-link-abbreviated" href="mailto:freyberg@jlab.org" target="_blank">freyberg@jlab.org</a>
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