<html><head><meta http-equiv="Content-Type" content="text/html; charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; line-break: after-white-space;" class="">Dear Silvia,<div class=""><br class=""></div><div class="">I fully support that decision, run RG-B on LD2, no target changes.</div><div class=""><br class=""></div><div class="">Happy holidays.</div><div class=""><br class=""></div><div class="">Best regards, Stepan<br class=""><div><br class=""><blockquote type="cite" class=""><div class="">On Dec 21, 2018, at 2:35 PM, Silvia Niccolai <<a href="mailto:silvia@jlab.org" class="">silvia@jlab.org</a>> wrote:</div><br class="Apple-interchange-newline"><div class=""><div dir="ltr" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span class=""></span></div><div dir="ltr" style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class="">Hello all, <div class="">Here are the news I just received from Bob Miller about his target test. <br class="">I agree with him that we shouldn’t risk changing material half way through the run and getting stuck again, losing precious beamtime. </div><div class="">Besides, RGA-RGK run until now on proton target, and RGA will run again right after RGB. I think this gives us plenty of data to evaluate neutron efficiency. </div><div class="">Let me know your comments. </div><div class="">Happy Christmas to everyone. </div><div class="">Silvia<br class=""><br class=""><div dir="ltr" class="">Sent from my iPhone</div><div dir="ltr" class=""><br class="">Begin forwarded message:<br class=""><br class=""></div><blockquote type="cite" class=""><div dir="ltr" class=""><b class="">From:</b><span class="Apple-converted-space"> </span>Bob Miller <<a href="mailto:rmiller@jlab.org" class="">rmiller@jlab.org</a>><br class=""><b class="">Date:</b><span class="Apple-converted-space"> </span>21 December 2018 at 19:58:09 CET<br class=""><b class="">To:</b><span class="Apple-converted-space"> </span>Silvia Niccolai <<a href="mailto:niccolai@ipno.in2p3.fr" class="">niccolai@ipno.in2p3.fr</a>><br class=""><b class="">Cc:</b><span class="Apple-converted-space"> </span>Stepan Stepanyan <<a href="mailto:stepanya@jlab.org" class="">stepanya@jlab.org</a>>, Volker Burkert <<a href="mailto:burkert@jlab.org" class="">burkert@jlab.org</a>>, "Daniel S. Carman" <<a href="mailto:carman@jlab.org" class="">carman@jlab.org</a>><br class=""><b class="">Subject:</b><span class="Apple-converted-space"> </span><b class="">Re: deuterium target plans</b><br class=""><br class=""></div></blockquote><blockquote type="cite" class=""><div dir="ltr" class=""><span class="">Hi Silvia,</span><br class=""><span class=""></span><br class=""><span class="">I tried to operate the target with D2 yesterday and today and was not successful. The target software is stuck in one process and will not move forward.</span><br class=""><span class=""></span><br class=""><span class="">Therefore we have to wait for support from Denis Bouziat at Saclay. He is the expert on the system and has diagnostic software that he can run. I am sure we can get the system operating in January. However, changing from D2 to H2 and back during an experiment is risky; the target is reliable when we get one configuration working (H2 for example), but whenever the system is shut down, or changes are made, we seem to have issues.</span><br class=""><span class=""></span><br class=""><span class="">I have sent an email to Denis asking for support.</span><br class=""><span class=""></span><br class=""><span class="">I will keep you informed of the progress when we return in January.</span><br class=""><span class=""></span><br class=""><span class="">Regards,</span><br class=""><span class=""></span><br class=""><span class="">Bob</span><br class=""><span class=""></span><br class=""><span class=""></span><br class=""><br class=""></div></blockquote></div></div><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">_______________________________________________</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><span style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none; float: none; display: inline !important;" class="">Clas12_rgb mailing list</span><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><a href="mailto:Clas12_rgb@jlab.org" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">Clas12_rgb@jlab.org</a><br style="caret-color: rgb(0, 0, 0); font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; word-spacing: 0px; -webkit-text-stroke-width: 0px; text-decoration: none;" class=""><a href="https://mailman.jlab.org/mailman/listinfo/clas12_rgb" style="font-family: Helvetica; font-size: 14px; font-style: normal; font-variant-caps: normal; font-weight: normal; letter-spacing: normal; orphans: auto; text-align: start; text-indent: 0px; text-transform: none; white-space: normal; widows: auto; word-spacing: 0px; -webkit-text-size-adjust: auto; -webkit-text-stroke-width: 0px;" class="">https://mailman.jlab.org/mailman/listinfo/clas12_rgb</a></div></blockquote></div><br class=""></div></body></html>