<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1">
<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);">
excellent tyler<br>
</div>
<div>
<div id="appendonsend"></div>
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
<br>
</div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> dsg-hallb_rich <dsg-hallb_rich-bounces@jlab.org> on behalf of Tyler Lemon <tlemon@jlab.org><br>
<b>Sent:</b> Monday, October 18, 2021 4:24 PM<br>
<b>To:</b> Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Cc:</b> dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
<b>Subject:</b> Re: [dsg-hallb_rich] [EXTERNAL] Re: Test of Grainger springs on mirror mounting points</font>
<div> </div>
</div>
<div dir="ltr">
<div style="font-family:Calibri,Arial,Helvetica,sans-serif; font-size:12pt; color:rgb(0,0,0)">
Hi Marco,</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)">
Attached are a series of photos with the mirror spring assembly with the spherical washer and the second nut.</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)">
The spring still fits well in the assembly.<br>
</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)">
-Tyler<br>
</div>
<div id="x_appendonsend"></div>
<hr tabindex="-1" style="display:inline-block; width:98%">
<div id="x_divRplyFwdMsg" dir="ltr"><font style="font-size:11pt" face="Calibri, sans-serif" color="#000000"><b>From:</b> Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
<b>Sent:</b> Monday, October 18, 2021 8:31 AM<br>
<b>To:</b> Tyler Lemon <tlemon@jlab.org><br>
<b>Cc:</b> dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org><br>
<b>Subject:</b> Re: [dsg-hallb_rich] [EXTERNAL] Re: Test of Grainger springs on mirror mounting points</font>
<div> </div>
</div>
<div class="x_BodyFragment"><font size="2"><span style="font-size:11pt">
<div class="x_PlainText">Hi Tyler,<br>
the pair of washer must be there to have reliable adjustment of the <br>
mirror without putting stress on the rod and on the flange.<br>
The second nut is ensuring that the adjustment cannot move anymore once <br>
we have found the best alignment. It will be inserted only at the end of <br>
the alignment of the mirrors on the RICH, for the moment it is not <br>
necessary.<br>
Marco<br>
<br>
<br>
<br>
Il 2021-10-18 14:26 Tyler Lemon ha scritto:<br>
> Hi Marco,<br>
> <br>
> I can resend photos with the spherical washer and additional nut.<br>
> <br>
> Regardless, even without those two items, the spring seems to fit in<br>
> the assembly.<br>
> <br>
> -------------------------<br>
> <br>
> From: Marco Mirazita <Marco.Mirazita@lnf.infn.it><br>
> Sent: Monday, October 18, 2021 4:56 AM<br>
> To: Tyler Lemon <tlemon@jlab.org><br>
> Cc: dsg-hallb_rich@jlab.org <dsg-hallb_rich@jlab.org>; Patrizia Rossi<br>
> <rossi@jlab.org>; Amrit Yegneswaran <yeg@jlab.org><br>
> Subject: [EXTERNAL] Re: Test of Grainger springs on mirror mounting<br>
> points<br>
> <br>
> Hi Tyler,<br>
> there is one piece missing. After slide 4, the flange is fixed on the<br>
> spring by a conical washer, a spherical washer and then the nut.<br>
> I attached here drawings of the two washers and of the full assembly.<br>
> Let me know if you can find all the parts, we can have a bluejeans<br>
> meeting if you want.<br>
> Marco<br>
> <br>
> Il 2021-10-15 20:17 Tyler Lemon ha scritto:<br>
>> Hi Marco Mirazita,<br>
>> <br>
>> I put together the parts if the mirror mounting points like we<br>
>> discussed in this morning's meeting.<br>
>> <br>
>> The Grainger springs are stable and fit well in the grooves and<br>
>> recesses of the mounting point parts.<br>
>> <br>
>> Attached are photos in series of how I put it together.<br>
>> <br>
>> Also, I was not able to find any spare springs from RICH-1. I<br>
> looked<br>
>> in all cabinets in EEL 124 cleanroom with RICH parts and the cabinet<br>
>> in the EEL hallway with RICH parts. I did find one box with parts<br>
>> similar to what you recently shipped me, but there were no springs.<br>
>> <br>
>> On a more positive note, I did find a fiber polishing kit in the<br>
> RICH<br>
>> cabinet in EEL 124, so we will be able to polish the d0 source fiber<br>
>> next time we run tests.<br>
>> <br>
>> -Tyler<br>
> _______________________________________________<br>
> dsg-hallb_rich mailing list<br>
> dsg-hallb_rich@jlab.org<br>
> <a href="https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rich">https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rich</a><br>
</div>
</span></font></div>
</div>
</div>
</body>
</html>