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Hi,
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<div>I've looked on the GlueX empty-target runs with the magnetic field</div>
<div>yesterday. Quite a few runs are poorly calibrated, I suggest not </div>
<div>to use them in the analysis. </div>
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<div>I added preliminary lumi numbers for the relatively good runs to the CCDB </div>
<div>(the same tables, which we use for PrimEx: </div>
<div>/PHOTON_BEAM/pair_spectrometer/lumi/tagh_tagged</div>
<div>/PHOTON_BEAM/pair_spectrometer/lumi/tagm_tagged )</div>
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<div>The list of runs and some quality plots are linked to our analysis page:</div>
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<div>https://halldweb.jlab.org/wiki/index.php?title=Photon_flux_for_GlueX_empty_target_runs</div>
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<div>In the table, I added the integrated flux for each run (for E_gamma > 8 GeV) and linked a table
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<div>with similar numbers for PrimEx runs (empty target runs are at the end of the PDF file); </div>
<div>this can help Tyler to simply scale statistics.</div>
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<div>Cheers,</div>
Sasha</div>
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