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<p>Dear RGK collaborators,</p>
<p>please find in attachment the message sent yesterday to the
software people interested in the implementation of the start-time
correction for events with electrons in the FT.</p>
<p>We did not receive a reply yet, but in today's software meeting
the item was included among the high priority ones in Nathan's to
do list.<br>
</p>
<p>All the best</p>
<p>Lucilla and Annalisa<br>
</p>
<div class="moz-forward-container"><br>
<br>
-------- Messaggio Inoltrato --------
<table class="moz-email-headers-table" cellspacing="0"
cellpadding="0" border="0">
<tbody>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Oggetto:
</th>
<td>Start time correction studies for events with the
electron detected in the FT (no electrons in CLAS)</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Data: </th>
<td>Wed, 23 Jan 2019 18:36:55 +0100</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Mittente:
</th>
<td>Annalisa D'Angelo <a class="moz-txt-link-rfc2396E" href="mailto:annalisa.dangelo@roma2.infn.it"><annalisa.dangelo@roma2.infn.it></a></td>
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<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">Organizzazione:
</th>
<td>INFN</td>
</tr>
<tr>
<th valign="BASELINE" nowrap="nowrap" align="RIGHT">A: </th>
<td><a class="moz-txt-link-abbreviated" href="mailto:ziegler@jlab.org">ziegler@jlab.org</a> <a class="moz-txt-link-rfc2396E" href="mailto:ziegler@jlab.org"><ziegler@jlab.org></a>, Raffaella De
Vita <a class="moz-txt-link-rfc2396E" href="mailto:Raffaella.Devita@ge.infn.it"><Raffaella.Devita@ge.infn.it></a>, Nathan Baltzell
<a class="moz-txt-link-rfc2396E" href="mailto:baltzell@jlab.org"><baltzell@jlab.org></a></td>
</tr>
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<br>
<br>
Dear Raffaella, Veronique and Nathan,<br>
<br>
As already anticipated we are working on the implementation of a
version of event the start time calculated from the FT information
for events that do not have an electron in CLAS.<br>
<br>
Please find in attachment the latest results for both simulated
data (from the K Lambda electro-production channel) at 7.5 GeV and
for a well calibrated run 4013 - skimmed for two forward opposite
charged particles and one positive central charged particle and
the electron in the FT.\<br>
<br>
As you can see the impact on the particle ID is relevant,
especially for the positive tracks, both for forward and central
particles.<br>
<br>
We believe it would be important to use this kind of corrections
for events with no electrons in CLAS to attribute the correct
particle ID in the EB, at the time of runs cooking.<br>
<br>
Should you think that more tests are needed we are ready to
perform them.<br>
<br>
Do you think it would be a good idea to present this studies at
the next software meeting?<br>
<br>
All the best<br>
<br>
Lucilla and Annalisa<br>
<br>
<br>
<pre class="moz-signature">--
================================================
Prof. Annalisa D'Angelo
Dip. Fisica, Universita' di Roma "Tor Vergata"
INFN Sezione di Roma Tor Vergata, Rome Italy
<a class="moz-txt-link-abbreviated" href="mailto:email:annalisa.dangelo@roma2.infn.it">email:annalisa.dangelo@roma2.infn.it</a>
Jefferson Laboratory, Newport News, VA USA
Email: <a class="moz-txt-link-abbreviated" href="mailto:annalisa@jlab.org">annalisa@jlab.org</a>
Tel: + 39 06 72594562
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