Actually those differences you see are because the 32bit floating point numbers in the BOS files are only good to 5 digits at best, and the paddles' widths are about 5 MeV anyways.<br><br><div class="gmail_quote">On Wed, Feb 15, 2012 at 3:03 PM, Mukesh Saini <<a href="mailto:msaini@admin.fsu.edu">msaini@admin.fsu.edu</a>> wrote:<br>
<blockquote class="gmail_quote">Hello,<br>
<br>
I checked a few runs in my data and compared the photon energies in my<br>
data-ntuples against the energies provided in the file:<br>
<br>
/group/clas/parms/pcor/g12/tagger_energies_reported_by_tagr_bank.txt<br>
<br>
Some of the photon energies in my data-ntuples are off by fractions of<br>
MeV (at most 0.5 MeV) from those in the file. I am guessing that is due<br>
to some tage correction function applied in CLASEvent. I couldn't find<br>
one during the first lookup of the code I did and I will look into this<br>
further.<br>
<br>
In case, anyone is aware where this further correction gets applied, and<br>
if its necessary, We might have to add this correction in<br>
post-processing Beam Energy Corrections also. To reverse lookup and<br>
correct the tage paddle seems cumbersome if the photon-energies in the<br>
data-ntuple's don't match the ones in the table provided. I think I will<br>
just reskim my data to include the tage paddle number, if that is the case.<br>
<font color="#888888"><br>
Mukesh.<br>
</font><div class="im HOEnZb"><br>
On 02/15/2012 01:32 PM, Johann Goetz wrote:<br>
><br>
> It describes the files and how to interpret them. Currently I only had<br>
> enough statistics to do 481 of the runs. I'm working on getting the<br>
> rest right now. Tomorrow, I intend to address momentum corrections and<br>
> I should have most of the<br>
<br>
<br>
</div><div class="HOEnZb"><div class="h5">_______________________________________________<br>
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</div></div></blockquote></div><br><br clear="all"><div><br></div>-- <br><a href="http://sites.google.com/site/theodoregoetz/">Johann T. Goetz, PhD.</a><br><a href="mailto:jgoetz@ucla.edu">jgoetz@ucla.edu</a><br>
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