<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=Windows-1252">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hello Dr. Rossi,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
It may be possible to test up to ~775 nm wavelength light. It seems like the mechanical construction of the monochromator (what provides the light of a set wavelength) is the limiting factor.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
To be able to say for certain, we will run a test to measure the intensity of the light observed in the test station at those larger wavelengths.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
We'll report back with the findings after the test is complete.</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Best regards,</div>
<div style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Tyler<br>
</div>
<div id="appendonsend"></div>
<hr style="display:inline-block;width:98%" tabindex="-1">
<div id="divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" style="font-size:11pt" color="#000000"><b>From:</b> Patrizia Rossi <rossi@jlab.org><br>
<b>Sent:</b> Thursday, January 9, 2020 9:00 PM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Cc:</b> Amrit Yegneswaran <yeg@jlab.org>; dsg-rich <dsg-rich@jlab.org><br>
<b>Subject:</b> Fwd: [EXTERNAL] Fwd: [Dsg-rich] RICH prototype mirror reflectivity summary</font>
<div> </div>
</div>
<div class="" style="word-wrap:break-word; line-break:after-white-space">
<div class="">Hi Tyler,</div>
<div class=""><br class="">
</div>
more appreciation from the chilean group.
<div class="">Is it possible to measure longer wavelengths as per their request?</div>
<div class=""><br class="">
</div>
<div class="">Thanks</div>
<div class="">patrizia<br class="">
<div class="">
<div style="color:rgb(0,0,0); font-family:Tahoma; font-size:12px; 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; text-decoration:none">
--------------------------------------------------<br class="">
# Patrizia Rossi<br class="">
# Jefferson Lab <br class="">
# 12000 Jefferson Avenue<br class="">
# Suite 5<br class="">
# Newport News VA 23606 (USA)<br class="">
# <a href="mailto:rossi@jlab.org" class="">e-mail: rossi@jlab.org</a><br class="">
# phone: +1 (757) 269 7740<br class="">
# fax: + 1 (757) 269 5800<br class="">
# cell: +1 (757) 528 7606<br class="">
<br class="">
</div>
<div class="" style="color:rgb(0,0,0); font-family:Tahoma; font-size:12px; 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; text-decoration:none">
<br class="">
</div>
<br class="x_Apple-interchange-newline">
</div>
<div><br class="">
<blockquote type="cite" class="">
<div class="">Begin forwarded message:</div>
<br class="x_Apple-interchange-newline">
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style="color:rgba(0,0,0,1.0)"><b class="">From: </b></span><span class="" style="">William Brooks <<a href="mailto:william.brooks@usm.cl" class="">william.brooks@usm.cl</a>><br class="">
</span></div>
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style="color:rgba(0,0,0,1.0)"><b class="">Subject: </b></span><span class="" style=""><b class="">[EXTERNAL] Fwd: [Dsg-rich] RICH prototype mirror reflectivity summary</b><br class="">
</span></div>
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style="color:rgba(0,0,0,1.0)"><b class="">Date: </b></span><span class="" style="">10 January 2020 at 02:45:25 CET<br class="">
</span></div>
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style="color:rgba(0,0,0,1.0)"><b class="">To: </b></span><span class="" style="">Patrizia Rossi <<a href="mailto:rossi@jlab.org" class="">rossi@jlab.org</a>><br class="">
</span></div>
<br class="">
<div class="">
<div class="" style="word-wrap:break-word; line-break:after-white-space">Appreciation from our people, fyi. Gabriela is the person (Physics Masters student) making the shiny deposition, the others are engineer (Pedro) and top manager/ PhD astronomer (Amelia).<br class="">
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">Begin forwarded message:</div>
<br class="x_Apple-interchange-newline">
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style=""><b class="">From: </b></span><span class="" style="">Pedro Mardones <<a href="mailto:pmardone@npf.cl" class="">pmardone@npf.cl</a>><br class="">
</span></div>
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style=""><b class="">Subject: </b></span><span class="" style=""><b class="">Re: [Dsg-rich] RICH prototype mirror reflectivity summary</b><br class="">
</span></div>
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style=""><b class="">Date: </b></span><span class="" style="">January 9, 2020 at 22:16:14 GMT-3<br class="">
</span></div>
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style=""><b class="">To: </b></span><span class="" style="">Amelia Bayo <<a href="mailto:abayo@npf.cl" class="">abayo@npf.cl</a>><br class="">
</span></div>
<div class="" style="margin-top:0px; margin-right:0px; margin-bottom:0px; margin-left:0px">
<span class="" style=""><b class="">Cc: </b></span><span class="" style="">William Brooks <<a href="mailto:william.brooks@usm.cl" class="">william.brooks@usm.cl</a>>, Gabriela Hamilton <<a href="mailto:gabihamilton@gmail.com" class="">gabihamilton@gmail.com</a>><br class="">
</span></div>
<br class="">
<div class="">
<div dir="ltr" class="">Good idea Amelia !!</div>
<br class="">
<div class="x_gmail_quote">
<div dir="ltr" class="x_gmail_attr">El jue., 9 ene. 2020 a las 22:11, Amelia Bayo (<<a href="mailto:abayo@npf.cl" class="">abayo@npf.cl</a>>) escribió:<br class="">
</div>
<blockquote class="x_gmail_quote" style="margin:0px 0px 0px 0.8ex; border-left-width:1px; border-left-style:solid; border-left-color:rgb(204,204,204); padding-left:1ex">
<div dir="auto" class="">That is pretty good indeed!! Also with little wl dependence from uv to red light :) can they measure longer wavelengths??
<div class="">Cheers and thanks for the info!!!</div>
<div class="">Amelia<br class="">
<br class="">
<div id="x_gmail-m_4580339266130673744AppleMailSignature" dir="ltr" class="">Sent from my iPhone</div>
<div dir="ltr" class=""><br class="">
On Jan 9, 2020, at 10:01 PM, William Brooks <<a href="mailto:william.brooks@usm.cl" target="_blank" class="">william.brooks@usm.cl</a>> wrote:<br class="">
<br class="">
</div>
<blockquote type="cite" class="">
<div dir="ltr" class="">
<div class="" style="word-wrap:break-word; line-break:after-white-space">Dear all,
<div class=""><br class="">
</div>
<div class="">Jlab measured the mirror today. They found an average of 85% reflectivity. There is a lot more information in the attached file, including wavelength dependence (look at the different tabs in the spreadsheet). </div>
<div class=""><br class="">
</div>
<div class="">For a first try, I’d say that’s quite good. I think 95% is pretty much the maximum possible. </div>
<div class=""><br class="">
</div>
<div class="">Thanks, </div>
<div class=""><br class="">
</div>
<div class=""> - Will</div>
<div class=""><br class="">
<div class=""><br class="">
<blockquote type="cite" class="">
<div class="">Begin forwarded message:</div>
<br class="">
<div class="" style="margin:0px"><span class="" style=""><b class="">From: </b></span><span class="">Patrizia Rossi <<a href="mailto:rossi@jlab.org" target="_blank" class="">rossi@jlab.org</a>><br class="">
</span></div>
<div class="" style="margin:0px"><span class="" style=""><b class="">Subject: </b>
</span><span class=""><b class="">Fwd: [Dsg-rich] RICH prototype mirror reflectivity summary</b><br class="">
</span></div>
<div class="" style="margin:0px"><span class="" style=""><b class="">Date: </b></span><span class="">January 9, 2020 at 18:59:39 GMT-3<br class="">
</span></div>
<div class="" style="margin:0px"><span class="" style=""><b class="">To: </b></span><span class="">William Brooks <<a href="mailto:william.brooks@usm.cl" target="_blank" class="">william.brooks@usm.cl</a>><br class="">
</span></div>
<br class="">
<div class=""></div>
</blockquote>
</div>
</div>
</div>
<div class="" style="word-wrap:break-word; line-break:after-white-space">
<div class="">
<div class="">
<blockquote type="cite" class="">
<div class=""></div>
</blockquote>
</div>
<br class="">
</div>
</div>
</div>
</blockquote>
<blockquote type="cite" class="">
<div dir="ltr" class=""><2019-01-09_prototype-mirror-refl_summary.xlsx></div>
</blockquote>
</div>
</div>
</blockquote>
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
</div>
</blockquote>
</div>
<br class="">
</div>
</div>
</body>
</html>