<div dir="ltr"><br><div>Hi Ellie, Dustin</div><div><br></div><div>Sorry this question is a bit late, but I would appreciate some clarification on the plots in the <a href="https://userweb.jlab.org/~dustin/work/b1_dir/Azz_response/Azz_response.pdf">most recent technote</a> </div>
<div><br></div><div>Please let me know if I have the following correct:</div><div><br></div><div>1) The plots in the technote show a systematic error that combines 6% total relative uncertainty combined with the drift errors in table 1 of the technote.</div>
<div><br></div><div>2) The 6% relative systematic has been reduced from the 9.2% relative error listed in table 3 of the submitted proposal.</div><div><br></div><div>3) The reduction comes from cutting the polarimetry relative uncertainty from 8% to 4%.</div>
<div><br></div><div>4) This is justified by using the expected uncertainty from line shape fitting instead of TE.</div><div><br></div><div><br></div><div>And if this is all correct, I have a question: is claiming reduction of the relative (non-drift) uncertainty from 9% to 6% (visually) worth it, since it complicates the discussion, and I was under the impression that the drift uncertainties dominated.</div>
<div><br></div><div>-Karl</div><div><br></div></div><div class="gmail_extra"><br clear="all"><div><div><div><div>---<br><div>Karl J. Slifer<div>Assistant Professor</div><div>University of New Hampshire<br><div>
Telephone : <a>603-722-0695</a></div></div></div></div></div></div></div>
<br><br><div class="gmail_quote">On Wed, Jun 5, 2013 at 4:17 PM, Long, Elena <<a href="mailto:Elena.Long@unh.edu">Elena.Long@unh.edu</a>> wrote:<br><blockquote class="gmail_quote">
My apologizes, the Pzz_40_* files have Rel. Sys=6%.<br>
<br>
Take care,<br>
Ellie<br>
<div class="im HOEnZb"><br>
Elena Long, Ph.D.<br>
Post Doctoral Research Associate<br>
University of New Hampshire<br>
<a href="mailto:elena.long@unh.edu">elena.long@unh.edu</a><br>
<a href="mailto:ellie@jlab.org">ellie@jlab.org</a><br>
<a href="tel:%28603%29%20862-1962">(603) 862-1962</a><br>
<a href="http://nuclear.unh.edu/~elong">http://nuclear.unh.edu/~elong</a><br>
<br>
</div><div class="HOEnZb"><div class="h5">On Wed 05 Jun 2013 04:11:34 PM EDT, Elena Long wrote:<br>
> Good afternoon,<br>
><br>
> I've attached *.eps plots using the drift uncertainties listed in<br>
> Table 1 of the ITAC response. They are included as a weighted average<br>
> to each x bin, where the bins have been collected across multiple<br>
> spectrometer settings. Pzz_20_* files are with Pzz=0.2 and Rel.<br>
> Sys=12%, Pzz_40_* files are with Pzz=0.4 and Rel. Sys=9%. *_bars_*<br>
> show the uncertainties on the points and *_bands_* splits the<br>
> systematics into a band underneath the estimates.<br>
><br>
> Take care,<br>
> Ellie<br>
><br>
> On Wed 05 Jun 2013 02:31:44 PM EDT, Dustin Keller wrote:<br>
>><br>
>> Yes I'm ok with using as much or as little as we all decide<br>
>> I guess we can determine what to keep next meeting.<br>
>><br>
>> dustin<br>
>><br>
>> On Wed, 5 Jun 2013, O. A. Rondon wrote:<br>
>><br>
>>><br>
>>> Hi Dustin,<br>
>>><br>
>>> Minor comment: collaboration spelling.<br>
>>><br>
>>> One comment Don made is that a 7-8 pages response to a two pages report<br>
>>> seems a bit too long. I tend to agree that we should do some<br>
>>> condensing.<br>
>>><br>
>>> Also I think the bulk of section 3 would be better separated as an<br>
>>> addendum. I think at the response level we should concentrate on<br>
>>> justifying 20% Pzz. I believe Karl said that Chris was comfortable<br>
>>> with it.<br>
>>><br>
>>> One way to attain the desired level would be to use a 6.5 T coil<br>
>>> (simple<br>
>>> solenoid is cheapest, and it would work fine with longitudinal<br>
>>> field). I<br>
>>> do think we should mention that a new target should be seriously<br>
>>> considered, since the CLAS coils were just a stopgap solution for an<br>
>>> experiment that needed both para and perp field.<br>
>>><br>
>>> Cheers,<br>
>>><br>
>>> Oscar<br>
>>><br>
>>><br>
>>><br>
>>><br>
>>> Dustin Keller wrote:<br>
>>>><br>
>>>> Edits have been made to the TAC/iTAC resp. with the<br>
>>>> updated version at<br>
>>>> <a href="https://userweb.jlab.org/~dustin/work/b1_dir/Azz_response/">https://userweb.jlab.org/~dustin/work/b1_dir/Azz_response/</a><br>
>>>><br>
>>>> additional edits and suggestions are welcome.<br>
>>>><br>
>>>> dustin<br>
>>>><br>
>>>> On Mon, 3 Jun 2013, Dustin Keller wrote:<br>
>>>><br>
>>>>><br>
>>>>> The working rough draft of the TAC/iTAC response is at<br>
>>>>> <a href="https://userweb.jlab.org/~dustin/work/b1_dir/Azz_response/">https://userweb.jlab.org/~dustin/work/b1_dir/Azz_response/</a><br>
>>>>><br>
>>>>> we may need considerable altering, editing, and condensing<br>
>>>>> but all the information is there.<br>
>>>>><br>
>>>>> dustin<br>
>>>>> _______________________________________________<br>
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>>>>><br>
>>>><br>
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>>>><br>
>>><br>
>>><br>
>>><br>
>>><br>
>>><br>
>>> _______________________________________________<br>
>>> b1_ana mailing list<br>
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>>><br>
>><br>
>> _______________________________________________<br>
>> b1_ana mailing list<br>
>> <a href="mailto:b1_ana@jlab.org">b1_ana@jlab.org</a><br>
>> <a href="https://mailman.jlab.org/mailman/listinfo/b1_ana">https://mailman.jlab.org/mailman/listinfo/b1_ana</a><br>
>> --<br>
>> Elena Long, Ph.D.<br>
>> Post Doctoral Research Associate<br>
>> University of New Hampshire<br>
>> <a href="mailto:elena.long@unh.edu">elena.long@unh.edu</a><br>
>> <a href="mailto:ellie@jlab.org">ellie@jlab.org</a><br>
>> <a href="tel:%28603%29%20862-1962">(603) 862-1962</a><br>
>> <a href="http://nuclear.unh.edu/~elong">http://nuclear.unh.edu/~elong</a><br>
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</div></div></blockquote></div><br></div>