<html><head><meta http-equiv="Content-Type" content="text/html charset=us-ascii"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><div class=""><br class=""></div><div class=""><br class=""></div><div class="">The BCAL calibrations were completely redone using higher statistics (10 files from each run) that were available from monitoring launches ver14, 15 and 16.</div><div class=""><br class=""></div><div class="">A few remaining 4 ns offsets from 3 channels in a few runs were corrected. These corrections represent the only run-dependent entries made. All other calibrations were studied as a function of run number and found to be constant enough to use a single value for Spring 17.</div><div class=""><br class=""></div><div class="">Attenuation length and gain ratio</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://logbooks.jlab.org/entry/3473762" class="">https://logbooks.jlab.org/entry/3473762</a></div><div class=""><br class=""></div><div class="">Z-track parms, End time difference and Effective velocity </div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>These are all extracted from the same comparison of tracking Z and BCAL tend time difference</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://logbooks.jlab.org/entry/3473509" class="">https://logbooks.jlab.org/entry/3473509</a></div><div class=""><br class=""></div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span>In particular there are wiggles in the residual of the position difference between BCAL and tracking.</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://logbooks.jlab.org/entry/3473511" class="">https://logbooks.jlab.org/entry/3473511</a></div><div class=""><br class="">Global time offset</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://logbooks.jlab.org/entry/3474308" class="">https://logbooks.jlab.org/entry/3474308</a></div><div class=""><br class=""></div><div class="">Timewalk corrections</div><div class=""><span class="Apple-tab-span" style="white-space:pre"> </span><a href="https://logbooks.jlab.org/entry/3473835" class="">https://logbooks.jlab.org/entry/3473835</a></div><br class=""><div class="">
<div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Best,<br class="">Mark Macrae Dalton</div><div style="color: rgb(0, 0, 0); font-family: Helvetica; font-size: 12px; font-style: normal; font-variant: normal; font-weight: normal; letter-spacing: normal; line-height: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-stroke-width: 0px; word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class=""><br class=""></div><br class="Apple-interchange-newline">
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