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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">Hi Alessandra,</span></p>
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I have some questions and suggestions. </p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">Q1. At your analysis note of the chapter 4.1.6 at p. 44, you are writing the HD target lengths</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">of</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);" class="ContentPasted0"> 4 cm</span><span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">
(Gold) and</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);" class="ContentPasted0"> 5 cm</span><span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"> (Silver).<span class="Apple-converted-space ContentPasted0">
They may be right, but </span>I wonder how do you define them ?</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">Q2. When you use both of data, Silver and Gold, to extract asymmetries, I wonder if we have to consider the amount</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">of HD material lost for Silver target.
<span class="Apple-converted-space ContentPasted0"> </span>I did not read the whole anaysis note yet and you may have already considered</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">this.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"><span class="Apple-converted-space ContentPasted0"> </span>I am attaching three PDF files.
<span class="Apple-converted-space ContentPasted0"> </span>I think I used the same cuts for (1) and (2), but don't remember which W-bins were</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"><span class="Apple-converted-space ContentPasted0"> </span>used.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">(1) Silver_Zvertex.pdf</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">(2) Gold_Zvertex.pdf</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">(3) G14_tgt_cell_dimensions.pdf</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"><span class="Apple-converted-space ContentPasted0"> </span>For (1) z vertex distributions from MVRT for HD Silver target run (black), empty_b target run (blue)</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">and subtracted (red) corresponding to the pure HD.<span class="Apple-converted-space ContentPasted0">
</span>Smaller entries between z = -11 and </span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);" class="ContentPasted0">-8 cm</span><span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"> than z
= </span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);" class="ContentPasted0">-8 cm</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">and
</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);" class="ContentPasted0">-5 cm</span><span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"> are coming from the fact that HD material was evapolated
and lost during one of the target transfers.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"><span class="Apple-converted-space ContentPasted0"> </span>For (2) z vertex distributions from MVRT for HD Gold target run (black), empty_a target run (blue)</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0">and subtracted (red) corresponding to the pure HD..</span></p>
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<span style="font-variant-ligatures:no-common-ligatures" class="ContentPasted0"><span class="Apple-converted-space ContentPasted0"> </span>We condensed the similar amounts of HD materials to the call 21a and 19b, but for 21a we lost some.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span>(3) shows the dimensions of the three target cells used for g14.
<span class="Apple-converted-space"> </span></span><span style="font-variant-ligatures: no-common-ligatures; background-color: rgb(224, 228, 9);">21</span><span style="font-variant-ligatures:no-common-ligatures">a and 19b were used for Silver and Gold</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">runs, respectively. <span class="Apple-converted-space">
</span>According to the report, there are differences of location of the HD target materials<span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span>(Silver and Gold) due to the different dimensions of the target cells (</span><span style="font-variant-ligatures: no-common-ligatures; background-color: rgb(224, 228, 9);">21</span><span style="font-variant-ligatures:no-common-ligatures">a
and 19b). <span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures">The data for empty-a and -b were taken with the cell,
</span><span style="font-variant-ligatures: no-common-ligatures; background-color: rgb(224, 228, 9);">21</span><span style="font-variant-ligatures:no-common-ligatures">a; the locatios of entrance and exit windows for Silver<span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures">and Empty-b are the same, while those for Gold and Empty-a are slightly different.
<span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures">From (1) and (2), it is hard to see clear differnces of the window position, because the differences are mm<span class="Apple-converted-space"> </span></span></p>
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<span style="font-variant-ligatures:no-common-ligatures">and may be too small to see on them.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">You may consder these things for the empty subtractin of Gold target and vertex cut.</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"><span class="Apple-converted-space"> </span>I think for Gold target, the flat region of the distribution is between z = -10 and -6 or
</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);">-5.5 cm</span><span style="font-variant-ligatures:no-common-ligatures"> and we may define</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">the length of 4 or</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);"> 4.5 cm</span><span style="font-variant-ligatures:no-common-ligatures">.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">We condensed the HD material to the call to have</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);"> 5 cm</span><span style="font-variant-ligatures:no-common-ligatures">
of length included the shrinkage of HD</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">material when frozen. For Silver target, it may be hard to define the length, because the evaporated HD may have</span></p>
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<span style="font-variant-ligatures:no-common-ligatures">frozen in the upstream region like z =
</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);">-10 cm</span><span style="font-variant-ligatures:no-common-ligatures">.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space"> </span>My opinion is to use</span><span style="font-variant-ligatures: no-common-ligatures; color: rgb(180, 36, 25);"> 4.5 cm</span><span style="font-variant-ligatures:no-common-ligatures">
for the both target lengths and to describe the HD material conditions in the analysis note.</span></p>
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<span style="font-variant-ligatures:no-common-ligatures"><span class="Apple-converted-space">
</span>Regards, Tsuneo Kageya.</span></p>
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