<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<style type="text/css" style="display:none;"> P {margin-top:0;margin-bottom:0;} </style>
</head>
<body dir="ltr">
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hi Moskov, </div>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
I have a couple of comments about the estimate of kaon flux using the electroproduction article from SLAC. </div>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<ol start="1" data-editing-info="{"applyListStyleFromLevel":true}" style="list-style-type: decimal;">
<li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<div>I think it is a very good idea to link our kaon flux estimate to real data. The SLAC article in Ref [2] of your PDF file is about electroproduction, while the only factor in your estimate that tries to account for the fact that we are doing photoproduction
with a 20% radiator is that factor of 0.2. I think the proper way to use these data to predict photoproduction yields would be to have an electroproduction model that reproduces or fits these SLAC data, then try to use the amplitudes or structure functions
in this model for photoproduction case. Otherwise, it is hard to be confident that we will get the right answer within a factor of two by simply guessing a correction factor. Another thing that could be done, although I am not sure if it is doable since I
have never done it myself, is to integrate the virtual photon flux Γ in electroproduction within some reasonable range of small Q<sup>2</sup> and some W-range that are applicable to the SLAC experiment to try to relate these data to photoproduction with a
know photon flux. </div>
</li><li style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<div>The difference in the tungsten plug thickness of a factor of 2 will result in a kaon flux reduction/increase factor of e<sup>2</sup>~7.4 , as the flux depends exponentially on the thickness of the tungsten (see formula for the yield Y<sub>K</sub>(p<sub>K</sub>)
in that SLAC article). But my impression was that they had multiple absorbers at the same time, including 27 radiation lengths of lead. So I do not think our absorber is thicker than what SLAC had. </div>
</li></ol>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Best, </div>
<div id="appendonsend"></div>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hovanes. </div>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<hr style="display: inline-block; width: 98%;">
<div id="divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Amaryan, Moskov <MAmaryan@odu.edu><br>
<b>Sent:</b> Sunday, December 15, 2024 2:01 PM<br>
<b>To:</b> Hovanes Egiyan <hovanes@jlab.org>; halld-klf-beam@jlab.org <halld-klf-beam@jlab.org><br>
<b>Subject:</b> [EXTERNAL] Re: KLF beamline meeting on Thursday, December 12th</span>
<div> </div>
</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
Dear all,</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
I tried to make some estimation of</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
the KL flux based on SLAC measurements.</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
Please see my file in the attachment.</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
If I am correct then the proposed flux of </div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
~10^4 is achievable.</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
Please let me know if I am missing something.</div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
<br>
</div>
<div id="x_Signature" class="x_elementToProof">
<div style="background-color: rgb(255, 255, 255); font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
Best regards,</div>
<div style="background-color: rgb(255, 255, 255); font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
Moskov.</div>
<div style="background-color: rgb(255, 255, 255); font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="color: rgb(12, 100, 192);"><span style="font-size: 12pt;"><b> </b></span><span style="font-family: "Times New Roman", Times, serif; font-size: 14pt;">Dr. Moskov Amaryan</span></div>
<div style="font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(12, 100, 192);">
Eminent Scholar and Professor of Physics</div>
<div style="font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(12, 100, 192);">
Old Dominion University</div>
<div><span style="font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(12, 100, 192);">Norfolk, VA 23529</span><span style="font-family: "Times New Roman", Times, serif; font-size: 12pt; color: rgb(179, 106, 226);"></span><span style="font-size: 13px;"><br>
<br>
</span><span style="font-size: 12pt; color: rgb(12, 100, 192);">Phone: 757-683-4614</span><span style="font-size: 13px;"><br>
</span><span style="font-size: 12pt; color: rgb(12, 100, 192);"> Fax: 757-683-3038 </span></div>
</div>
<div id="x_appendonsend"></div>
<div style="direction: ltr; font-family: "Times New Roman", Times, serif; font-size: 14pt; color: rgb(0, 0, 0);">
<br>
</div>
<hr style="direction: ltr; display: inline-block; width: 98%;">
<div id="x_divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Halld-klf-beam <halld-klf-beam-bounces@jlab.org> on behalf of Hovanes Egiyan <hovanes@jlab.org><br>
<b>Sent:</b> Thursday, December 12, 2024 9:06 PM<br>
<b>To:</b> halld-klf-beam@jlab.org <halld-klf-beam@jlab.org><br>
<b>Subject:</b> Re: [Halld-klf-beam] KLF beamline meeting on Thursday, December 12th</span>
<div> </div>
</div>
<table align="left" cellspacing="0" cellpadding="0" style="direction: ltr; box-sizing: border-box; border-collapse: collapse; border-spacing: 0px;">
<tbody>
<tr>
<td style="width: 9.30469px; height: 74.1328px; direction: ltr; background-color: rgb(178, 34, 34); padding: 1.25pt 5.5pt 1.25pt 1.5pt;">
</td>
<td style="width: 100%; height: 70.8281px; direction: ltr; background-color: rgb(245, 245, 245); padding: 1.25pt 3.75pt 1.25pt 11.25pt;">
<p style="direction: ltr; margin-top: 0px; margin-bottom: 0px;"><b>EXTERNAL to ODU:</b> This email is not from an ODU account. Do not click links or open attachments unless you recognize the sender and know the content is safe.</p>
</td>
</tr>
</tbody>
</table>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hi, </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
I posted munutes of today's meeting on the wiki. </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<a href="https://wiki.jlab.org/klproject/index.php/KLF_beamline_meeting_-_December_12,_2024#Minutes" id="OWAbdd08cf3-a480-b6f9-5ede-e083d04abe58" class="x_x_OWAAutoLink" shash="SxJDXD2dqAwt6JVHAdvvzICJs+WqsDnEr2gd2X2Ei+mVZbOkN6GOauOdkdWgfyRSVGfTTbdZHMBnCSow67gKppLdCp/7dTC68V6KWBM2XDXLBQ3fCL+h5oRfi6/tMQW5psGRN+GLvdGrS4AWeFT6f8XLUm9EpYqVZ6sNgJu3eLs=" originalsrc="https://wiki.jlab.org/klproject/index.php/KLF_beamline_meeting_-_December_12,_2024#Minutes" data-auth="VerificationFailed">https://wiki.jlab.org/klproject/index.php/KLF_beamline_meeting_-_December_12,_2024#Minutes</a></div>
<div id="x_x_appendonsend"></div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Best, </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hovanes. </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<hr style="direction: ltr; display: inline-block; width: 98%;">
<div id="x_x_divRplyFwdMsg" dir="ltr"><span style="font-family: Calibri, sans-serif; font-size: 11pt; color: rgb(0, 0, 0);"><b>From:</b> Halld-klf-beam <halld-klf-beam-bounces@jlab.org> on behalf of Hovanes Egiyan <hovanes@jlab.org><br>
<b>Sent:</b> Tuesday, December 10, 2024 9:06 AM<br>
<b>To:</b> halld-klf-beam@jlab.org <halld-klf-beam@jlab.org><br>
<b>Subject:</b> [Halld-klf-beam] KLF beamline meeting on Thursday, December 12th</span>
<div> </div>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hi, </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
We will have a KLF beamline meeting on Thursday, December 12th , at 9am using Zoom (see information below). I posted the preliminary agenda of the meeting on the KLF wiki:</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<a href="https://wiki.jlab.org/klproject/index.php/KLF_beamline_meeting_-_December_12,_2024#Agenda" id="OWAd047348a-8799-6b96-1253-5b6e983bc99a" class="x_x_OWAAutoLink" shash="X0hdS5J4OCXdHA5K2tTOlTQfwZkXlX+0uTLfltPz0dGVTPemrGq7CmySGDYJHxU8ntY1/rJ3HoRVLo/TrfL8imQuO8ZmqL5eayY0DohxDAtFVtDAw3cksk6rmdyJftdeBtGrD6RsRCijzF4OlAc2+w18s2hFmUafBPdLWzskueE=" originalsrc="https://wiki.jlab.org/klproject/index.php/KLF_beamline_meeting_-_December_12,_2024#Agenda" data-auth="VerificationFailed">https://wiki.jlab.org/klproject/index.php/KLF_beamline_meeting_-_December_12,_2024#Agenda</a></div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Please, feel free to add items to the agenda or let me know if you would like to discuss a topic. </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Best, </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Hovanes. </div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Join ZoomGov Meeting</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
https://jlab-org.zoomgov.com/j/1606674688?pwd=b3dnTzJWVEtxZExGRnFoY29PSGkxQT09</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Meeting ID: 160 667 4688</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
Passcode: 709878</div>
<div style="direction: ltr; font-family: Aptos, Aptos_EmbeddedFont, Aptos_MSFontService, Calibri, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0);">
<br>
</div>
</body>
</html>