<div dir="ltr"><br><div>Sorry! I fixed it.</div><div><br></div><div>-Karl</div></div><div class="gmail_extra"><br><br><div class="gmail_quote">On Sun, May 5, 2013 at 11:47 PM, Simonetta Liuti <<a href="mailto:sl4y@cms.mail.virginia.edu">sl4y@cms.mail.virginia.edu</a>> wrote:<br>
<blockquote class="gmail_quote">Hi All,<br>
I just noticed that my name in the front is misspelled: Liuti instead of Luiti.<br>
<br>
Simonetta<br>
<br>
<br>
On Sat, 4 May 2013 20:19:19 -0400<br>
<div class="HOEnZb"><div class="h5"> Karl Slifer <<a href="mailto:karl.slifer@unh.edu">karl.slifer@unh.edu</a>> wrote:<br>
>Hi Ellie,<br>
><br>
>I don't have any suggestions for further tweaks. Combining the central two<br>
>points would look compelling but the x bin would be quite large. We should<br>
>have a slide as backup for the PAC, but I think its ok to leave separate<br>
>for now.<br>
><br>
>Is it possible to post or send the .agr files? I think I can make them<br>
>behave and produce clean plots...<br>
><br>
>-Karl<br>
><br>
><br>
>---<br>
>Karl J. Slifer<br>
>Assistant Professor<br>
>University of New Hampshire<br>
>Telephone : <a href="tel:603-722-0695">603-722-0695</a><br>
><br>
><br>
>On Sat, May 4, 2013 at 8:08 PM, Elena Long <<a href="mailto:ellie@jlab.org">ellie@jlab.org</a>> wrote:<br>
><br>
>> Good evening,<br>
>><br>
>> The *.eps files of the plots can be found here:<br>
>> <a href="http://nuclear.unh.edu/~elong/analysis_files/2013-05-04/">http://nuclear.unh.edu/~elong/analysis_files/2013-05-04/</a><br>
>><br>
>> I apologize that they're not vectors. xmgrace didn't output the plots<br>
>> quite like I expected it to, and I'm not certain that I can figure out why<br>
>> before the deadline.<br>
>><br>
>> I do once again want to point out<br>
>> <a href="https://hallcweb.jlab.org/wiki/index.php/Elong-13-05-02#Current_Best_Numbers">https://hallcweb.jlab.org/wiki/index.php/Elong-13-05-02#Current_Best_Numbers</a><br>
>><br>
>> In particular, I want to make sure that everyone's ok with the x bins in<br>
>> b1 and Azz. The two center points could be joined if we wanted, or we could<br>
>> take some time off of the smallest x bin and give it to one of the other<br>
>> ones. If there's any tweaking of the points that folks would like to see,<br>
>> please let me know.<br>
>><br>
>> Also for clarification, the rate and time estimates are for the<br>
>> spectrometers at each of the blue and red blobs in the kinematics plots.<br>
>> They don't directly correlate to the x bins for Azz and b1 since we're<br>
>> merging data from different kinematics settings.<br>
>><br>
>> Take care,<br>
>> Ellie<br>
>><br>
>><br>
>><br>
>> On May 4, 2013, at 7:36 PM, Karl Slifer <<a href="mailto:karl.slifer@unh.edu">karl.slifer@unh.edu</a>> wrote:<br>
>><br>
>><br>
>> PPS : please note that in the overhead I assumed we would switch<br>
>> polarization states twice per day and I assumed 2 hours each time. I think<br>
>> this would imply about 10 "buckets" of polarized counts and 10 "buckets" of<br>
>> unpolarized counts for each of our 3 x-points. It is our dominant<br>
>> overhead at 5 days total.<br>
>><br>
>> I think we may have a little room to move here. Please see the attached<br>
>> plot from g2p data, where we depolarized the (proton) target by pumping<br>
>> with microwaves in less than 4 minutes. The pump up is also very fast with<br>
>> the new fridge and blasting the wattage of the new microwave cavity the<br>
>> pump up is about 30 mins to the negative state. I think polarizing in the<br>
>> positive state is usually a little faster.<br>
>><br>
>> So, perhaps we can be a little more aggressive in our overhead estimate :5<br>
>> or 10 mins for depolarizing and 30 mins to polarize. That would give us<br>
>> the flexibility to increase the number of "buckets" to say 10 or 12 total<br>
>> per day. It will be a large overhead (about 12 days just for this), but oh<br>
>> well. Would this be sufficient to control the known drifts?<br>
>><br>
>> A little more radical would be to explore the idea of flipping from<br>
>> positive to negative tensor polarization rapidly with an AFP type flip,<br>
>> which I believe is near instantaneous. This is essentially what happens<br>
>> with hole burning anyway I think.<br>
>><br>
>> -Karl<br>
>><br>
>><br>
>><br>
>> ---<br>
>> Karl J. Slifer<br>
>> Assistant Professor<br>
>> University of New Hampshire<br>
>> Telephone : 603-722-0695<br>
>><br>
>><br>
>> On Sat, May 4, 2013 at 6:47 PM, Karl Slifer <<a href="mailto:karl.slifer@unh.edu">karl.slifer@unh.edu</a>> wrote:<br>
>><br>
>>><br>
>>> Hi All,<br>
>>><br>
>>> I've posted the updated draft at<br>
>>><br>
>>> <a href="https://dl.dropboxusercontent.com/u/59933793/tensor_b1_v03.pdf">https://dl.dropboxusercontent.com/u/59933793/tensor_b1_v03.pdf</a><br>
>>><br>
>>> There is some lagtime for implementation, but I think this reflects<br>
>>> pretty well where our discussion was about 24 hours ago. However, we still<br>
>>> need:<br>
>>><br>
>>> -updated rates/kin plots from Ellie or Patricia and values for the table<br>
>>><br>
>>> -some consensus on how to address Steve's comments.<br>
>>><br>
>>> It seems we have three options with time running short.<br>
>>><br>
>>> 1) List all possible factors that drift with time and atleast sketch a<br>
>>> plan to deal with them.<br>
>>><br>
>>> 2) go back to difference of counts.<br>
>>><br>
>>> 3) Cancel submission and work on this for next PAC.<br>
>>><br>
>>> I lean to the first, Oscar leans to the second. I'd very much like to<br>
>>> find some consensus on this. Am I the only one still nerding it up in<br>
>>> front of my computer on this beautiful spring day?<br>
>>><br>
>>> -Karl<br>
>>><br>
>>> PS : If anyone makes suggestions for changes I would very much appreciate<br>
>>> that they be in a form that I can put into the document quickly.<br>
>>><br>
>>> ---<br>
>>> Karl J. Slifer<br>
>>> Assistant Professor<br>
>>> University of New Hampshire<br>
>>> Telephone : <a href="tel:603-722-0695">603-722-0695</a><br>
>>><br>
>><br>
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>><br>
>><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>
>><br>
>><br>
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>><br>
>><br>
<br>
</div></div><div class="im HOEnZb">**************************************************************<br>
**************************************************************<br>
Prof. Simonetta Liuti telephone <a href="tel:%28434%29%20982-2087">(434) 982-2087</a><br>
Department of Physics FAX <a href="tel:%28434%29%20924-4576">(434) 924-4576</a><br>
University of Virginia home <a href="tel:%28434%29%20973%209593">(434) 973 9593</a><br>
382 McCormick Rd.<br>
PO Box 400714<br>
Charlottesville, VA 22904-4714<br>
<br>
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