[dsg-hallb_rich] [EXTERNAL] Re: Test of Grainger springs on mirror mounting points

[Tyler Lemon]

Hi Marco,

Attached are a series of photos with the mirror spring assembly with the spherical washer and the second nut.

The spring still fits well in the assembly.

-Tyler
________________________________
From: Marco Mirazita <Marco.Mirazita at lnf.infn.it>
Sent: Monday, October 18, 2021 8:31 AM
To: Tyler Lemon <tlemon at jlab.org>
Cc: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>
Subject: Re: [dsg-hallb_rich] [EXTERNAL] Re: Test of Grainger springs on mirror mounting points

Hi Tyler,
the pair of washer must be there to have reliable adjustment of the
mirror without putting stress on the rod and on the flange.
The second nut is ensuring that the adjustment cannot move anymore once
we have found the best alignment. It will be inserted only at the end of
the alignment of the mirrors on the RICH, for the moment it is not
necessary.
Marco



Il 2021-10-18 14:26 Tyler Lemon ha scritto:
> Hi Marco,
>
>  I can resend photos with the spherical washer and additional nut.
>
>  Regardless, even without those two items, the spring seems to fit in
> the assembly.
>
> -------------------------
>
> From: Marco Mirazita <Marco.Mirazita at lnf.infn.it>
> Sent: Monday, October 18, 2021 4:56 AM
> To: Tyler Lemon <tlemon at jlab.org>
> Cc: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>; Patrizia Rossi
> <rossi at jlab.org>; Amrit Yegneswaran <yeg at jlab.org>
> Subject: [EXTERNAL] Re: Test of Grainger springs on mirror mounting
> points
>
> Hi Tyler,
> there is one piece missing. After slide 4, the flange is fixed on the
> spring by a conical washer, a spherical washer and then the nut.
> I attached here drawings of the two washers and of the full assembly.
> Let me know if you can find all the parts, we can have a bluejeans
> meeting if you want.
> Marco
>
> Il 2021-10-15 20:17 Tyler Lemon ha scritto:
>> Hi Marco Mirazita,
>>
>>  I put together the parts if the mirror mounting points like we
>> discussed in this morning's meeting.
>>
>>  The Grainger springs are stable and fit well in the grooves and
>> recesses of the mounting point parts.
>>
>>  Attached are photos in series of how I put it together.
>>
>>  Also, I was not able to find any spare springs from RICH-1. I
> looked
>> in all cabinets in EEL 124 cleanroom with RICH parts and the cabinet
>> in the EEL hallway with RICH parts. I did find one box with parts
>> similar to what you recently shipped me, but there were no springs.
>>
>>  On a more positive note, I did find a fiber polishing kit in the
> RICH
>> cabinet in EEL 124, so we will be able to polish the d0 source fiber
>> next time we run tests.
>>
>>  -Tyler
> _______________________________________________
> dsg-hallb_rich mailing list
> dsg-hallb_rich at jlab.org
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rich
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_rich/attachments/20211018/b4dde914/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: mirror support spring test 2021-10-18.pdf
Type: application/pdf
Size: 1914331 bytes
Desc: mirror support spring test 2021-10-18.pdf
URL: <https://mailman.jlab.org/pipermail/dsg-hallb_rich/attachments/20211018/b4dde914/attachment-0001.pdf>