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<div class="moz-cite-prefix">Tim is already making an insertion
device which will allow us to have <br>
at least 3 targets near the goniometer (10^-4,10^-3, 10^-4). With
some modifications <br>
to the ladder design, we can have four targets (if you think that
we will need four amorphous <br>
targets, then please let Tim know very soon). These will be
amorphous radiators, <br>
not diamond crystals for coherent bremsstrahlung , and according
to the last version of <br>
the schedule that I have seen, it is not unrealistic to have them
by spring of 2014. With these <br>
targets we can attempt to tune the photon beam into the hall and
use the lessons in the fall, if <br>
we get any beam time on this targets. <br>
<br>
I agree that we need to finalize the number of the targets and
even their thicknesses at this <br>
collaborations meeting. <br>
<br>
Hovanes. <br>
<br>
<br>
On 9/24/2013 6:26 PM, Richard Jones wrote:<br>
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<blockquote cite="mid:CABfxa3T2ga0w8+V2TdNWv+62Ue3CYw5Qjh7teggK39tjx4Q4vw@mail.gmail.com" type="cite">
<div dir="ltr">Hello Todd,
<div><br>
</div>
<div>Good question, to which I don't have a ready-made answer.
I could shoot from the hip, but would prefer to raise it at
the collaboration meeting and get an agreed-upon list to
submit to you. Does that make sense? I think that Hovanes
has already been thinking about that question, but there are
others who will also want to have input.</div>
<div><br>
</div>
<div>-Richard J.</div>
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<div class="gmail_extra"><br>
<br>
<div class="gmail_quote">On Mon, Sep 23, 2013 at 12:17 PM, Todd
Satogata <<a href="mailto:satogata@jlab.org">satogata@jlab.org</a>>
wrote:<br>
<blockquote class="gmail_quote">Hi Richard,<br>
<br>
One thing that came up in a recent meeting with our safety
guys is a question<br>
about plans for foils or other possible targets in the
goniometer over the<br>
next couple of runs (during FY14). Could you let me know
what targets you<br>
plan to have in place, if any, on what timescale, or let me
know who the<br>
best person would be to ask about these sorts of things so I
can forward<br>
it along to Kelly? I definitely know that we intend to
establish first<br>
beam on the tagger enclosure dump in the spring, and that
there is some<br>
interest in looking at backgrounds and downstream effects on
any detectors<br>
in the hall, but don't know if there is a plan to install
any foils or<br>
other targets. Could you also let me know when you expect to
have first<br>
radiator and photons delivered? Many thanks!<br>
<br>
-Todd<br>
<br>
--------------+---------------------------+----------------+------------------<br>
Todd Satogata | CASA Group, Jefferson Lab | <a href="tel:%28757%29%20269-6281">(757)
269-6281</a> | <a href="mailto:satogata@jlab.org">satogata@jlab.org</a><br>
--------------+---------------------------+----------------+------------------<br>
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