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<font size="-1"><font face="Helvetica, Arial, sans-serif">Should
this info be kept and maintained in the LED?<br>
Michele<br>
</font></font><br>
<div class="moz-cite-prefix">On 7/5/2016 12:26 PM, David Douglas
wrote:<br>
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<p>Thanks Jim.</p>
<p>Part of the need for the polarity check is to establish the
"parity" of the skews (which differs between EPICS and codes). I
don't want to introduce bias, but if we could measure the
poletip field (with sign) of each quad and log it, we'll save
time overall. I'll sketch up a procedure.</p>
<p>Thanks</p>
<p>D<br>
<br>
</p>
<br>
<div class="moz-cite-prefix">On 7/5/2016 11:00 AM, Jim Coleman
wrote:<br>
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<div class="moz-cite-prefix">Hi Dave,<br>
We haven't powered any of the 4F quads yet. That will not
happen until the spool pieces are installed due to splitting
of the magnet. We have to perform a voltage/ current/ polarity
measurement of any magnet as part of the HCO. I'll make sure
LCW gets put on the skews.<br>
-Jim<br>
<br>
On 7/5/2016 10:08 AM, David Douglas wrote:<br>
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<p>re: #2) - please put the results of the test into the
LERFLog. Thanks</p>
<p>D<br>
</p>
<br>
<div class="moz-cite-prefix">On 7/5/2016 10:07 AM, David
Douglas wrote:<br>
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<p>Hi Jim - don't know if the following was communicated to
you or not, but</p>
<p>1) Steve asked if the 10 additional skew quads needed
water cooling. Answer: if the other quads are run with
water cooling, these will need it as well. They run at the
same fields as the normal quads.</p>
<p>2) Has each quad been polarity checked (i.e. a Hall probe
put on each pole of each quad)? We need to be sure there
are consistent sign conventions through 4F, and I'll need
to know what pole of each quad is at what sign and field
level when the usual +5A test current is being run.</p>
<p>Thanks,<br>
DD</p>
<p><br>
</p>
<div class="moz-cite-prefix">On 6/30/2016 4:32 PM, Jim
Coleman wrote:<br>
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<blockquote
cite="mid:8daf15ae-9173-d459-1628-4a8427a82d32@jlab.org"
type="cite">apologies for sending it out late <br>
<br>
<br>
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