<html><head><meta http-equiv="Content-Type" content="text/html charset=utf-8"></head><body style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">I believe that we don’t need to extract the radius of curvature from the CMM measurements we did.<div class=""><br class=""></div><div class=""><br class=""></div><div class="">Giovanni</div><div class=""><br class=""><div><blockquote type="cite" class=""><div class="">Il giorno 11 ago 2016, alle ore 13:26, Jacob Walker <<a href="mailto:walkerj@jlab.org" class="">walkerj@jlab.org</a>> ha scritto:</div><br class="Apple-interchange-newline"><div class=""><div class=""><div class=""><div class="">All, </div><div class=""><br class=""></div><div class="">That is what I am thinking Giovanni. I was instructed not to measure the surfaces on these mirrors, so there is very little real measured data (4 corner points) to determine the radius. </div><div class=""><br class=""></div><div class=""><br class=""></div><!-- originalMessage --><div class="">-------- Original message --------</div><div class="">From: Giovanni Angelini <<a href="mailto:nglgnn@gmail.com" class="">nglgnn@gmail.com</a>> </div><div class="">Date: 8/11/16 1:19 PM (GMT-05:00) </div><div class="">To: Tyler Lemon <<a href="mailto:tlemon@jlab.org" class="">tlemon@jlab.org</a>> </div><div class="">Cc: Jim Dahlberg <<a href="mailto:dahlberg@jlab.org" class="">dahlberg@jlab.org</a>>, Jacob Walker <<a href="mailto:walkerj@jlab.org" class="">walkerj@jlab.org</a>>, clas12 rich <<a href="mailto:clas12_rich@jlab.org" class="">clas12_rich@jlab.org</a>>, Patrizia Rossi <<a href="mailto:rossi@jlab.org" class="">rossi@jlab.org</a>> </div><div class="">Subject: Re: [Clas12_rich] Report for RICH mirror 3 and 4 CMM measurements </div><div class=""><br class=""></div></div><br class=""><div class=""><meta http-equiv="Content-Type" content="text/html charset=utf-8" class=""><div style="word-wrap: break-word; -webkit-nbsp-mode: space; -webkit-line-break: after-white-space;" class="">Dear All,<div class=""><br class=""></div><div class="">I am writing about the radius of curvature: since we measured only the four sides of the mirror, I don’t think we will extract a reasonable radius of curvature for the whole mirror. At least, it will be the radius of curvature of the four edges, that will not be reliable as average radius of curvature of the whole mirror because the edges are always the point more “weird” since the cut of the mirror can apply micro deformation.</div><div class=""><br class=""></div><div class="">If I miss something about that, please be free to contact me.</div><div class=""><br class=""></div><div class=""><br class=""></div><div class="">Giovanni Angelini </div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><br class=""></div><div class=""><div class=""><blockquote type="cite" class=""><div class="">Il giorno 11 ago 2016, alle ore 13:03, Tyler Lemon <<a href="mailto:tlemon@jlab.org" class="">tlemon@jlab.org</a>> ha scritto:</div><br class="Apple-interchange-newline"><div class=""><div class=""><div style="font-family: 'times new roman', 'new york', times, serif; font-size: 12pt;" class=""><div class="">Dear Jim,<br class=""></div><div class=""><br data-mce-bogus="1" class=""></div><div class="">Thank you for sending the CMM data. We do want the radius so we can compare it with our radius calculations. <br data-mce-bogus="1" class=""></div><div class=""><br data-mce-bogus="1" class=""></div><div class="">Best regards,<br data-mce-bogus="1" class=""></div><div class="">Tyler<br data-mce-bogus="1" class=""></div><div class=""><br class=""></div><hr id="zwchr" data-marker="__DIVIDER__" class=""><div data-marker="__HEADERS__" class=""><b class="">From: </b>"Jim Dahlberg" <<a href="mailto:dahlberg@jlab.org" class="">dahlberg@jlab.org</a>><br class=""><b class="">To: </b>"Tyler Lemon" <<a href="mailto:tlemon@jlab.org" class="">tlemon@jlab.org</a>><br class=""><b class="">Cc: </b>"Jacob Walker" <<a href="mailto:walkerj@jlab.org" class="">walkerj@jlab.org</a>>, "clas12 rich" <<a href="mailto:clas12_rich@jlab.org" class="">clas12_rich@jlab.org</a>>, "Patrizia Rossi" <<a href="mailto:rossi@jlab.org" class="">rossi@jlab.org</a>><br class=""><b class="">Sent: </b>Thursday, August 11, 2016 11:45:03 AM<br class=""><b class="">Subject: </b>Re: Report for RICH mirror 3 and 4 CMM measurements<br class=""></div><br class=""><div data-marker="__QUOTED_TEXT__" class="">Here is the data from Matt, I was holding off to ask Matt if you wanted the radius's.<br class="">Jim<br class=""><br class="">----- Original Message -----<br class="">From: "Tyler Lemon" <<a href="mailto:tlemon@jlab.org" class="">tlemon@jlab.org</a>><br class="">To: "Jim Dahlberg" <<a href="mailto:dahlberg@jlab.org" class="">dahlberg@jlab.org</a>>, "Jacob Walker" <<a href="mailto:walkerj@jlab.org" class="">walkerj@jlab.org</a>>, "clas12 rich" <<a href="mailto:clas12_rich@jlab.org" class="">clas12_rich@jlab.org</a>><br class="">Cc: "Patrizia Rossi" <<a href="mailto:rossi@jlab.org" class="">rossi@jlab.org</a>><br class="">Sent: Thursday, August 11, 2016 11:31:42 AM<br class="">Subject: Report for RICH mirror 3 and 4 CMM measurements<br class=""><br class="">Dear Matt and Jim, <br class=""><br class="">Could the report for the CMM measurements of RICH mirrors 3 and 4 be sent as soon as possible? As we mentioned after the measurements were done, it is critical that we are able to run our acceptance tests using the CMM measurements before the deadline for their acceptance, August 15. <br class=""><br class="">Best regards, <br class="">Tyler<br class=""></div></div></div>_______________________________________________<br class="">Clas12_rich mailing list<br class=""><a href="mailto:Clas12_rich@jlab.org" class="">Clas12_rich@jlab.org</a><br class=""><a href="https://mailman.jlab.org/mailman/listinfo/clas12_rich" class="">https://mailman.jlab.org/mailman/listinfo/clas12_rich</a><br class=""></div></blockquote></div><br class=""></div></div></div></div></div></blockquote></div><br class=""></div></body></html>