<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"><span style="font-family: Calibri, Arial, Helvetica, sans-serif; font-size: 12pt; color: rgb(0, 0, 0); background-color: rgb(255, 255, 255);">
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
Hi Amrit and Mindy, </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0"><br class="ContentPasted0">
</p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
Tyler and I spoke to Bogdan this morning regarding the addition of a capacitor to the PMT divider bases for NPS. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
It looks like they have found that the frequency band of the low voltage amplifier is too large and is generating noise. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
The thought is to chop the frequency band by adding a capacitor (~500 pF) on the output of the divider base (think low-pass filter). </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
The attached photo shows the output of the divider base with a capacitor already installed. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
Approximately 150 dividers have been equipped with capacitors already. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
The dividers with the capacitors already installed will be tested before the holiday shutdown. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
If the test goes well, they would like to start installing capacitors on the remaining divider PCBs. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
There are ~800 capacitors that will need to be installed. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
These are already on-hand (Chris Stanislav has them). </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
This would be time sensitive work. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
The French team will be returning to the lab around January 10, 2023 to complete installation/instrumentation. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
They can install between 40 and 50 PMTs (including dividers and shielding) per day, so there would need to be at least 50 to 100 completed before January 10. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
This would provide a kind of cushion between their install rate and the availability of completed dividers. </p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
I’m not sure what Mindy’s work load looks like at the beginning of next year, but does it seem like this is something DSG can do?
<br class="ContentPasted0">
</p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0"><br class="ContentPasted0">
</p>
<p style="font-size:11pt;font-family:Calibri,sans-serif;margin:0 0 8pt 0" class="ContentPasted0">
-- Aaron</p>
</span></div>
</body>
</html>