Lab Book 2014_05_12 Hamilton Carter
To Do this week in no particular order:
1.
Leak detect the glass and fiberglass Dewars
2.
Check on the availability of the can crusher
3.
Make drawings for sample stage
4.
Check for existing materials that might be used
for the sample stage
5.
Find 240 V 3 phase outlet for the magnet power
supply
6.
Get the power cord for the magnet supply
7.
Modify lab table
8.
Move magnet
10.
Continue work on the Thomas precession paper
11.
Check on replacement filters for the leak
detector
12.
Move and test NaI detector
13.
Characterize source in Dewar with NaI detector
14.
Magnet test YBCO sample
15.
Find a source for x-ray film and developing
Done Today
Reseated the top and bottom seals on the fiberglass
Dewar. Spent some time brainstorming how
to mount the sample in the fiberglass Dewar.
Dewar Design
Decision:
The Dewar will not be cut or modified to house a larger sample than can be inserted through the neck. The sample will be situated in the tail of the Dewar.
The Dewar will not be cut or modified to house a larger sample than can be inserted through the neck. The sample will be situated in the tail of the Dewar.
Brainstorming sketching.
The coil will be oriented with its axis of rotation directed
horizontally. The coil will be built
into a curved fiberglass sample holder that will both reinforce the bottom of
the coil and hold the sample.
Dewar Filling
Filled the liquid nitrogen storage Dewar. Empty it weighs 76
pounds and full it weighs in at 173 pounds.
Strangely, I’m unable to figure out how to get the liquid nitrogen to
exit the Dewar today. Opening the liquid
or the vent valves produces no results, (haven’t tried both yet). The pressure gauge reads 0 psi. The Dewar is still slightly cold to the touch
though and feels still feels heavier.
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