[Dsg-rich] [EXTERNAL] Re: Cabinets with aerogel

[Tyler Lemon]

Hi Marco,

My answers are below, in-line, and in blue.

Tyler

From: Marco Contalbrigo <mcontalb at fe.infn.it>
Sent: Tuesday, March 24, 2020 2:45 PM
To: Tyler Lemon <tlemon at jlab.org>
Cc: Valery Kubarovsky <vpk at jlab.org>; dsg-rich <dsg-rich at jlab.org>; Marco Mirazita <marco.mirazita at lnf.infn.it>
Subject: [EXTERNAL] Re: Cabinets with aerogel

Dear Tyler,
moving the aerogel should be done if really necessary.

At the Hall-B meeting today we got a long discussion and
several suggestions. Here is a sumamry of open questions:

- does the cabinet restart the drying cycle after a power
cycle ? If not, we can run in a situation that even after
a short power cut the cabinets stop to work.
​When the cabinets have previously moved and unpowered, they have restarted with the same set point (0.5 %RH) and started the drying cycle.

- who can access the DSG small clean room (EEL 121b)
in the next weeks ? We were told that Brian Eng will
get access to the Lab. Is it true ?
Brian is the alternative to Jack Segal and can only go in if Jack falls sick and cannot go in.

- is the aerogel stored inside its plastic envelopes ?
(this would temporarily limit the humidity exchange
in case of power failure)
The tiles are all stored in plastic bags. Most are double bagged. There are a few (exact number unknown, but only a few) that are in one bag.

- HDice group offers to store the cabinets in their
TestLab, where a Diesel generator is available. How
many cabinets are in use for the aerogel and is
any aerogel stored in the big SVT cabinet in the
big clean room (EEL 125) ?
There are three small dry boxes filled with aerogel in the gowning room. There are no tiles anywhere else.

Thanks, Marco.
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