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    Greetings,<br>
    <br>
    To clarify. I am not placing this script into g12 svn until I am
    finished with the multiple photon efficiency.<br>
    <br>
    <pre class="moz-signature" cols="72">BR
MK
----------------------------------------
Michael C. Kunkel, PhD
Forschungszentrum Jülich
Nuclear Physics Institute and Juelich Center for Hadron Physics
Experimental Hadron Structure (IKP-1)
<a class="moz-txt-link-abbreviated" href="http://www.fz-juelich.de/ikp">www.fz-juelich.de/ikp</a></pre>
    <div class="moz-cite-prefix">On 7/6/15 4:40 PM, Michael C. Kunkel
      wrote:<br>
    </div>
    <blockquote cite="mid:559AE7D3.50209@jlab.org" type="cite">
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      Greetings,<br>
      <br>
      I have written a script for this. This script is in beta, I will
      add more to it later, but the output is my efficiency correction
      for single photon selection.<br>
      <br>
      Please look at my svn <br>
      <a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://jlabsvn.jlab.org/svnroot/clas/users/mkunkel/clas/g12_corrections/g12_trackEfficiency.hpp">https://jlabsvn.jlab.org/svnroot/clas/users/mkunkel/clas/g12_corrections/g12_trackEfficiency.hpp</a><br>
      <br>
      you will need the histograms located in <br>
      <a moz-do-not-send="true" class="moz-txt-link-freetext"
href="https://jlabsvn.jlab.org/svnroot/clas/users/mkunkel/clas/g12_corrections/EFFICIENCY_HISTS/">https://jlabsvn.jlab.org/svnroot/clas/users/mkunkel/clas/g12_corrections/EFFICIENCY_HISTS/</a><br>
      <br>
      To use, <br>
          double <font color="#ff0000">tot_eff</font> =
      clas::g12::g12_trackEfficiency(Vz, P_Ptot_fit, P_Phi_fit,
      P_Theta_fit, Ep_Ptot_fit, Ep_Phi_fit, Ep_Theta_fit, Em_Ptot_fit,
      Em_Phi_fit, Em_Theta_fit, TString DEG_or_RAD ,TString dir);<br>
      <br>
      I have only tested this with lab angles that are in degrees, but
      there is a conversion in the script, not tested though.<br>
      <br>
      I use it as <br>
          Double_t xSection_scale =
      (1.e-30*Flux_norm*density_of_target*dTheta/<font color="#ff0000">tot_eff</font>);

      <br>
      <br>
      Then I weight my event by this number.<br>
      <br>
      <pre class="moz-signature" cols="72">BR
MK
----------------------------------------
Michael C. Kunkel, PhD
Forschungszentrum Jülich
Nuclear Physics Institute and Juelich Center for Hadron Physics
Experimental Hadron Structure (IKP-1)
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.fz-juelich.de/ikp">www.fz-juelich.de/ikp</a></pre>
      <div class="moz-cite-prefix">On 7/2/15 4:41 PM, Akbar, Zulkaida
        wrote:<br>
      </div>
      <blockquote
cite="mid:DM2PR0501MB13740578BCCA5F1A4C728EC4E3970@DM2PR0501MB1374.namprd05.prod.outlook.com"
        type="cite">
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        <div id="divtagdefaultwrapper"
style="font-size:12pt;color:#000000;background-color:#FFFFFF;font-family:Calibri,Arial,Helvetica,sans-serif;">
          <p>Sure, big thanks MK. </p>
          <p><br>
          </p>
          <p>Best Regard,</p>
          <p><br>
          </p>
          <p>Zulkaida Akbar</p>
          <br>
          <br>
          <div style="color: rgb(0, 0, 0);">
            <hr tabindex="-1" style="display:inline-block; width:98%">
            <div id="divRplyFwdMsg" dir="ltr"><font
                style="font-size:11pt" color="#000000" face="Calibri,
                sans-serif"><b>From:</b> Michael C. Kunkel <a
                  moz-do-not-send="true" class="moz-txt-link-rfc2396E"
                  href="mailto:mkunkel@jlab.org"><mkunkel@jlab.org></a><br>
                <b>Sent:</b> Thursday, July 2, 2015 8:39 PM<br>
                <b>To:</b> Akbar, Zulkaida<br>
                <b>Subject:</b> Re: omega cross sections:</font>
              <div> </div>
            </div>
            <div>I do not have it in script form.<br>
              What I can do is get a package together that you can
              mimic, but you will still have to do some coding on your
              own.<br>
              <pre class="moz-signature" cols="72">BR
MK
----------------------------------------
Michael C. Kunkel, PhD
Forschungszentrum Jülich
Nuclear Physics Institute and Juelich Center for Hadron Physics
Experimental Hadron Structure (IKP-1)
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.fz-juelich.de/ikp">www.fz-juelich.de/ikp</a></pre>
              <div class="moz-cite-prefix">On 7/2/15 4:37 PM, Akbar,
                Zulkaida wrote:<br>
              </div>
              <blockquote type="cite">
                <div id="divtagdefaultwrapper" style="font-size:12pt;
                  color:#000000; background-color:#FFFFFF;
                  font-family:Calibri,Arial,Helvetica,sans-serif">
                  <p>Hi MK,</p>
                  <p><br>
                  </p>
                  <p>I select single photon for my event.</p>
                  <p><br>
                  </p>
                  <p><br>
                  </p>
                  <p>Best Regard,</p>
                  <p><br>
                  </p>
                  <p>Zulkaida Akbar</p>
                  <br>
                  <br>
                  <div style="color:rgb(0,0,0)">
                    <hr tabindex="-1" style="display:inline-block;
                      width:98%">
                    <div id="divRplyFwdMsg" dir="ltr"><font
                        style="font-size:11pt" color="#000000"
                        face="Calibri, sans-serif"><b>From:</b> Michael
                        C. Kunkel <a moz-do-not-send="true"
                          class="moz-txt-link-rfc2396E"
                          href="mailto:mkunkel@jlab.org"><mkunkel@jlab.org></a><br>
                        <b>Sent:</b> Thursday, July 2, 2015 8:36 PM<br>
                        <b>To:</b> Akbar, Zulkaida; Lei Guo<br>
                        <b>Cc:</b> Johann Goetz<br>
                        <b>Subject:</b> Re: omega cross sections:</font>
                      <div> </div>
                    </div>
                    <div>This depends, do you use all "in time" photons
                      in the event, or do you select single photons?<br>
                      <pre class="moz-signature" cols="72">BR
MK
----------------------------------------
Michael C. Kunkel, PhD
Forschungszentrum Jülich
Nuclear Physics Institute and Juelich Center for Hadron Physics
Experimental Hadron Structure (IKP-1)
<a moz-do-not-send="true" class="moz-txt-link-abbreviated" href="http://www.fz-juelich.de/ikp">www.fz-juelich.de/ikp</a></pre>
                      <div class="moz-cite-prefix">On 7/2/15 4:33 PM,
                        Akbar, Zulkaida wrote:<br>
                      </div>
                      <blockquote type="cite">
                        <div id="divtagdefaultwrapper"
                          style="font-size:12pt; color:#000000;
                          background-color:#FFFFFF;
                          font-family:Calibri,Arial,Helvetica,sans-serif">
                          <p>Dear Lei and MK,</p>
                          <p><br>
                          </p>
                          <p>I am doing trigger inefficiency studies
                            now, but it is very good idea to use MK
                            inefficiency map.  Where can I get the
                            trigger inefficiency map/Routine? Thanks a
                            Lot.</p>
                          <p><br>
                          </p>
                          <p><br>
                          </p>
                          <p>Best Regard</p>
                          <p><br>
                          </p>
                          <p>Zulkaida Akbar</p>
                          <br>
                          <br>
                          <div style="color:rgb(0,0,0)">
                            <hr tabindex="-1"
                              style="display:inline-block; width:98%">
                            <div id="divRplyFwdMsg" dir="ltr"><font
                                style="font-size:11pt" color="#000000"
                                face="Calibri, sans-serif"><b>From:</b>
                                Lei Guo <a moz-do-not-send="true"
                                  class="moz-txt-link-rfc2396E"
                                  href="mailto:lguo@jlab.org"><lguo@jlab.org></a><br>
                                <b>Sent:</b> Thursday, July 2, 2015 8:00
                                PM<br>
                                <b>To:</b> Akbar, Zulkaida<br>
                                <b>Cc:</b> Michael C. Kunkel; Johann
                                Goetz<br>
                                <b>Subject:</b> omega cross sections:</font>
                              <div> </div>
                            </div>
                            <div>HI, Zulkaida,
                              <div class=""><br class="">
                              </div>
                              <div class="">MK, Johann and I had a
                                meeting today going over the g12 review
                                comments, specifically related to this
                                comments:</div>
                              <div class=""><br class="">
                              </div>
                              <div class="">"When you compare cross
                                sections to previous measurements
                                please </div>
                              compare in the same kinematical bins. A
                              strong forward peak pushes other <br
                                class="">
                              point to the axis and it is not possible
                              to judge if they agree or not. In addition
                              <br class="">
                              to overlaying two data sets, show their
                              ratio. Even without it we see that in <br
                                class="">
                              some bins the agreement is not very good.
                              Make something similar to pull <br
                                class="">
                              distributions as well, to see if there is
                              a bias."
                              <div class=""><br class="">
                              </div>
                              <div class="">Could you do the following
                                two </div>
                              <div class="">1. Apply MK’s
                                track-dependent correction for the
                                normalization. It should be similar to
                                your overall 15% (or is it 18%
                                correction). MK has some routine you can
                                just call. If you want to do it quickly,
                                at least your should apply separate
                                corrections (globally) for p pi+ pi-</div>
                              <div class="">2. Plot the ratio of your
                                xsections over g11 and/or pull
                                distributions. If you have questions
                                about details, please contact MK/JOhann.
                                We are looking to submit the response
                                next week, so hopefully we are not
                                ruining your long weekend.</div>
                              <div class=""><br class="">
                              </div>
                              <div class="">Lei<br class="">
                                <div class=""><br
                                    class="webkit-block-placeholder">
                                </div>
                                <div class=""><br
                                    class="webkit-block-placeholder">
                                </div>
                                <div class=""><br
                                    class="webkit-block-placeholder">
                                </div>
                                <div class="">
                                  <div class="">
                                    <div class="">
                                      <div class="">Lei Guo</div>
                                      <div class="">Assistant Professor</div>
                                      <div class="">Physics Department</div>
                                      <div class="">Florida
                                        International University</div>
                                      <div class="">Miami, FL</div>
                                    </div>
                                    <div class=""><br class="">
                                    </div>
                                    <div class="">email: <a
                                        moz-do-not-send="true"
                                        href="mailto:leguo@fiu.edu"
                                        class="">leguo@fiu.edu</a> or <a
                                        moz-do-not-send="true"
                                        href="mailto:lguo@jlab.org"
                                        class="">lguo@jlab.org</a></div>
                                    <div class="">Office:305-348-0234</div>
                                  </div>
                                </div>
                                <br class="">
                              </div>
                            </div>
                          </div>
                        </div>
                      </blockquote>
                      <br>
                    </div>
                  </div>
                </div>
              </blockquote>
              <br>
            </div>
          </div>
        </div>
      </blockquote>
      <br>
      <br>
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      <br>
      <pre wrap="">_______________________________________________
G12 mailing list
<a class="moz-txt-link-abbreviated" href="mailto:G12@jlab.org">G12@jlab.org</a>
<a class="moz-txt-link-freetext" href="https://mailman.jlab.org/mailman/listinfo/g12">https://mailman.jlab.org/mailman/listinfo/g12</a>
</pre>
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