[Dsg-rich] RICH spherical mirrors 3 and 4 recieved from ECI

[Tomassini Sandro]

Hi,
In my opinion the mirror shipping from ECI to jlab was a disaster! We currently have two threaded rods broken, I have few spares in house but i need to check if the length is good or not. 
Please check if the bonded part of the mount is  damaged.

Regards
S.

⁣Inviato da BlueMail ​

Il giorno 16 giu 2017 19:56, alle ore 19:56, Amrit Yegneswaran <yeg at jlab.org> ha scritto:
>perhaps, the delicate mirrors should be shipped in reinforced cardboard
>boxes. 
>
>
>From: "Tyler Lemon" <tlemon at jlab.org> 
>To: "dsg-rich" <dsg-rich at jlab.org> 
>Sent: Friday, June 16, 2017 12:32:10 PM 
>Subject: [Dsg-rich] RICH spherical mirrors 3 and 4 recieved from ECI 
>
>Hello Marco Mirazita and , 
>
>We received RICH spherical mirrors 3 and 4 today from ECI. As last time
>the mirrors were received we opened and inspected them in EEL 121 DSG
>small clean room. Attached are pictures from the inspection. Because of
>the large attachment size, I have also posted the pictures to my
>userweb page at the link below in case the attachment cannot send: 
>
>https://userweb.jlab.org/~tlemon/RICH_spherical_mirrors_3_and_4_recieved_from_ECI_2017-06-16/
>
>
>
>Our findings from the inspection are: 
>
>Shipping box and packaging: 
>1.) The exterior shipping box looked as if it was crushed during
>shipping however, all interior boxes were in better condition. 
>2.) Each mirror was packaged separately in its own box and that box was
>wrapped in bubble wrap. 
>3.) Within each individual box, the mirrors were sealed in the same
>silver bag as we received them in from CMA in 2016. 
>4.) Mirror 4 had additional cushioning and padding in its individual
>box. 
>5.) Mirror 3 had no additional padding it its individual box. 
>
>Mirror 3: 
>1.) One of the screws used to mount the mirror to its support structure
>was poking through its sealed silver bag. 
>2.) One corner of the mirror was not resting on a foam pad. 
>3.) One of the screws used to mount the mirror to its support frame had
>snapped off where it was screwed into the mount during shipping. 
>4.) There appeared to be scratches and scuffs on the reflective surface
>of the mirror. 
>
>Mirror 4: 
>1.) Two of the screws used to mount the mirror to its support structure
>was poking through its sealed silver bag. 
>2.) One of the screws used to mount the mirror to its support frame had
>snapped off where it was screwed into the mount during shipping. 
>3.) There appeared to be scratches and scuffs on the reflective surface
>of the mirror. 
>4.) There was one small pocket (~2 mm in size) on the reflective
>surface of the mirror. 
>
>Regarding the scuffs, they may be leftover residue from the coating
>process. We did not attempt to clean the reflective surfaces to avoid
>damaging the surface. 
>
>Regarding the two broken screws, it looks that we might be able to
>remove the broken portion of the screw and use a new threaded rod.
>Would CMA be able to send us at least two more of the plastic threaded
>screws? 
>
>Marco Contalbrigo, 
>Since you are at JLab for the collaboration meeting, if you would like
>to inspect the mirrors also, the mirrors are stored in the DSG small
>clean room. 
>
>Best regards, 
>Tyler 
>
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>
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