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<span style="font-variant-ligatures:no-common-ligatures">Ciao Alessandra,</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span>As for the neutron data, in order to exclude events in which protons are misidentified</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">as neutrons, are you considering dead or inefficient SC paddles ?</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">It is not clear if you are cosidering this from the sentences at
</span><span style="font-variant-ligatures: no-common-ligatures; background-color: rgb(224, 228, 9);">page</span><span style="font-variant-ligatures:no-common-ligatures"> 119 of your note;</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">"a condition requiring an anti- coincidence from the scintillator array was imposed, excluding events with hits not connected to reconstructed charged tracks and facing an EC cluster".</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">I guess you do, but just in case.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">I am attaching a pdf file which shows some SC paddle info from g13a and g14 last target period.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">(1) From 4th </span><span style="font-variant-ligatures: no-common-ligatures; background-color: rgb(224, 228, 9);">page</span><span style="font-variant-ligatures:no-common-ligatures">, the most of particles
seem to be detected on the paddle 1 to 39.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">At the second </span><span style="font-variant-ligatures: no-common-ligatures; background-color: rgb(224, 228, 9);">page</span><span style="font-variant-ligatures:no-common-ligatures">, there are shown
rejected SC paddles in the g13a analysis with reasons.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">If we exclude the data from paddles 40 to 48, there are 39 x 6 = 234 paddles which could detect</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">charged particles.<span class="Apple-converted-space">
</span>As you can see the fig. at </span><span style="font-variant-ligatures: no-common-ligatures; background-color: rgb(224, 228, 9);">page</span><span style="font-variant-ligatures:no-common-ligatures"> 3, paddles 23rd show some inefficient</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">counts (green arrows). <span class="Apple-converted-space">
</span>From the table of g13a, the number of the inefficient or dead paddles</span></p>
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<span style="font-variant-ligatures: no-common-ligatures; color: rgb(0, 0, 0);">is 22 among 234 and the ratio is 9.4
</span><span style="font-variant-ligatures:no-common-ligatures">% which may be the worst case, althogh not so small.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures">(2) I think protons are misidentifies as neutrons, if</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span>(a) proton are detected in EC<span class="Apple-converted-space">
</span>and</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span>(b) either protons are not reconstructed in DC or not detected at SC</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span>I guess that the number of events in which protons are passing through both DC and SC without</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">being detected is small.
<span class="Apple-converted-space"> </span>But there are some as 9.4 </span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(64, 11, 217);">% which are reconstructed in DC, but</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">not detected at SC bad paddles.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">(3) I mean if a particle is reconsructed in DC, detected in EC as a baryon in the same or<span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures">neighboring sector and not detected in SC, I wonder if the particle is a proton, which can be
<span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures">misidentified as a neutron.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space">
</span>Ciao, Tsuneo Kageya.</span></p>
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