[dsg-hallb_rich] [EXTERNAL] Re: details on 32 Aerogel tiles received

[Tyler Lemon]

Hi Marco,

I was able to go into the lab today and check those two aerogel tiles.

Tile 446F1 matches the photo you had from the manufacturer and the corner looks to be about the same as before it was shipped.

Tile 445f37 did indeed have a new crack that has caused one of corners to completely chip off. The corner looks very similar in appearance to the corner on 446f1.

Attached is a new photo of tile 445f37 in the same position as your pre-shipping photo. In the new photo I am pointing to the piece that has chipped off of the damaged corner. The broken-off piece sort of looks like a cloudy blue haze abouve my finger.

-Tyler
________________________________
From: Marco Mirazita <Marco.Mirazita at lnf.infn.it>
Sent: Thursday, July 15, 2021 3:51 AM
To: Tyler Lemon <tlemon at jlab.org>
Cc: dsg-hallb_rich at jlab.org <dsg-hallb_rich at jlab.org>; benmokhtarf at duq.edu <benmokhtarf at duq.edu>
Subject: [EXTERNAL] Re: [dsg-hallb_rich] details on 32 Aerogel tiles received

Hi Tyler,
I attached two pictures taken before the shipment.
The tile 446f1 already had one corner a bit damaged. From your picture
is hard to judge, can you say if there has been any worsening during the
transportation?
In the tile 445f37 instead before the shipment I just see some issue in
the upper part of the right side, but nothing really significant at the
corners. So the crack did happen during the transportation. If I
understand, it is in the bottom left corner of the picture 445f37.jpg,
is it right?
Marco



Il 2021-07-14 19:35 Tyler Lemon ha scritto:
> Hello,
>
>  Today, we received the shipment of 32 aerogel tiles at JLab. All 32
> tiles have been inspected and moved to the dry cabinet in EEL 124.
>
>  Attached is a table of the 32 tiles with the tiles' designation
> number and any comments about the condition of the tile, if
> applicable. I also took photos of each tile and any issues seen. Since
> there are so many photos, I put them all (and a copy of the
> spreadsheet) at the link below.
>
>  https://userweb.jlab.org/~tlemon/RICH/2021-07-14_aerogel/
>
>  There were two tiles that had one corner each that had issues.
>  Tile 445f37 had one corner that was cracked.
>  Tile 446f1 had one corner that was dented/missing.
>
>  The other 30 tiles had no significant issues.
>
>  -Tyler
> _______________________________________________
> dsg-hallb_rich mailing list
> dsg-hallb_rich at jlab.org
> https://mailman.jlab.org/mailman/listinfo/dsg-hallb_rich
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