<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 class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hi Kondo,</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Just during Monday simulation meeting Matt showed series of studies. Slide 15 in Matt's presentation concludes the effect of CF affects the angular resolution significantly, if I am not mistaken in final conclusion during that presentation ? </div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Regards,</div>
<div class="elementToProof" style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Sourav </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> Erd108 <erd108-bounces@jlab.org> on behalf of Kondo Gnanvo <kagnanvo@jlab.org><br>
<b>Sent:</b> Wednesday, July 17, 2024 10:23 AM<br>
<b>To:</b> Sourav Tarafdar <stara@jlab.org>; Gnanvo, Kondo (kg6cq) <kg6cq@virginia.edu>; erd108@jlab.org <erd108@jlab.org>; Shyam Kumar <shyam055119@gmail.com><br>
<b>Subject:</b> Re: [Erd108] Additional simulation request</font>
<div> </div>
</div>
<div>
<div>
<div dir="ltr">
<div dir="ltr">Hi Sourav, </div>
<div dir="ltr">The spatial resolution was already irrelevant even before considering the CF material if i remember well from past studies. </div>
<div dir="ltr">I don’t remember a simulation study that ever show any impact of MPGD resolution on the angular resolution at the DIRC level </div>
<div dir="ltr">Best regards </div>
<div dir="ltr">Kondo </div>
</div>
</div>
<div id="x_ms-outlook-mobile-signature">
<div><br>
</div>
Get <a href="https://aka.ms/o0ukef">Outlook for iOS</a></div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Erd108 <erd108-bounces@jlab.org> on behalf of Sourav Tarafdar <stara@jlab.org><br>
<b>Sent:</b> Wednesday, July 17, 2024 10:11:36 AM<br>
<b>To:</b> Gnanvo, Kondo (kg6cq) <kg6cq@virginia.edu>; erd108@jlab.org <erd108@jlab.org>; Shyam Kumar <shyam055119@gmail.com><br>
<b>Subject:</b> Re: [Erd108] Additional simulation request</font>
<div> </div>
</div>
<style type="text/css" style="display:none">
<!--
p
{margin-top:0;
margin-bottom:0}
-->
</style>
<div dir="ltr">
<div class="x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Hi Kondo,</div>
<div class="x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div class="x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
I thought it was 3% Carbon fiber support structure causing multiple scattering which was basically making spatial resolution of MPGD irrelevant ?</div>
<div class="x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<div class="x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Regards,</div>
<div class="x_x_elementToProof" style="font-family:Aptos,Aptos_EmbeddedFont,Aptos_MSFontService,Calibri,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Sourav</div>
<div id="x_x_appendonsend"></div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="x_x_divRplyFwdMsg" dir="ltr"><font face="Calibri, sans-serif" color="#000000" style="font-size:11pt"><b>From:</b> Gnanvo, Kondo (kg6cq) <kg6cq@virginia.edu><br>
<b>Sent:</b> Wednesday, July 17, 2024 10:07 AM<br>
<b>To:</b> Sourav Tarafdar <stara@jlab.org>; erd108@jlab.org <erd108@jlab.org>; Shyam Kumar <shyam055119@gmail.com><br>
<b>Subject:</b> [EXTERNAL] RE: Additional simulation request</font>
<div> </div>
</div>
<style>
<!--
@font-face
{font-family:"Cambria Math"}
@font-face
{font-family:Calibri}
p.x_x_x_MsoNormal, li.x_x_x_MsoNormal, div.x_x_x_MsoNormal
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif}
a:link, span.x_x_x_MsoHyperlink
{color:#0563C1;
text-decoration:underline}
a:visited, span.x_x_x_MsoHyperlinkFollowed
{color:#954F72;
text-decoration:underline}
p.x_x_x_msonormal0, li.x_x_x_msonormal0, div.x_x_x_msonormal0
{margin:0in;
margin-bottom:.0001pt;
font-size:11.0pt;
font-family:"Calibri",sans-serif}
span.x_x_x_EmailStyle19
{font-family:"Calibri",sans-serif;
color:windowtext}
.x_x_x_MsoChpDefault
{font-size:10.0pt}
@page WordSection1
{margin:1.0in 1.0in 1.0in 1.0in}
-->
</style>
<div lang="EN-US">
<div class="x_x_x_WordSection1">
<p class="x_x_x_MsoNormal">Hi Sourav, </p>
<p class="x_x_x_MsoNormal">It looks like the material budget already the dominant parameter for the angular resolution study at the DIRC level so it seems very unlikely that there would be any difference between 1% and 5% for the TOF layer</p>
<p class="x_x_x_MsoNormal">Best regards </p>
<p class="x_x_x_MsoNormal">Kondo</p>
<p class="x_x_x_MsoNormal"> </p>
<div>
<div style="border:none; border-top:solid #E1E1E1 1.0pt; padding:3.0pt 0in 0in 0in">
<p class="x_x_x_MsoNormal"><b>From:</b> Erd108 <erd108-bounces@jlab.org> <b>On Behalf Of
</b>Sourav Tarafdar<br>
<b>Sent:</b> Wednesday, July 17, 2024 9:55 AM<br>
<b>To:</b> erd108@jlab.org; Shyam Kumar <shyam055119@gmail.com><br>
<b>Subject:</b> [Erd108] Additional simulation request</p>
</div>
</div>
<p class="x_x_x_MsoNormal"> </p>
<div>
<p class="x_x_x_MsoNormal"><span style="font-size:12.0pt; color:black">Dear all ,</span></p>
</div>
<div>
<p class="x_x_x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_x_x_MsoNormal"><span style="font-size:12.0pt; color:black">The request is mostly directed towards Matt and Shyam. I am wondering if it is possible to quickly do additional study on angular resolution @ DIRC location by increasing the material budget
of barrel ToF from current 1.0% to 5.0% ? There has been chatter about increasing the material budget of ToF to 5.0% and before it takes a lead it will be good to know it's effect . Based on results shown in the Monday meeting I suppose it will further deteriorate
angular resolution at DIRC. Also considering Shyam's method I think the analytical simulation method by Shyam will be good enough if DD4HEP sim is time taking. </span></p>
</div>
<div>
<p class="x_x_x_MsoNormal"><span style="font-size:12.0pt; color:black"> </span></p>
</div>
<div>
<p class="x_x_x_MsoNormal"><span style="font-size:12.0pt; color:black">Cheers,</span></p>
</div>
<div>
<p class="x_x_x_MsoNormal"><span style="font-size:12.0pt; color:black">Sourav</span></p>
</div>
</div>
</div>
</div>
</div>
</body>
</html>