Home built aluminum plates

Home built aluminum plates for heating of magnet O-rings during low temperature NMR- experiments. Heating- and cooling-device of shim system when performing low and high temperature experiments respectively.

Dry air (dew point below - 40 degrees Centigrade) for cooling the shim system to avoid ruining the shim system, while performing high temperature NMR-experiments, is entering via the blue tubing seen at the left of the aluminum plate mounted at the bottom of the magnet. The air leaves the shim system/magnet in the top grey aluminum plate in the small slot pointing to the right.

In order to avoid magnet quench due to loss of vacuum in the magnets warm water is being circulated in both the grey aluminum plate at the bottom and the red aluminum plate at the top of the magnet when performing low temperature experiments over extended periods of time. The black rubber tubing supplying and draining water is easliy seen on the upper picture. Addition of a small amount of NaN3 has kept algae growth away for many years. The wam water supply (seen below) is provided by a simple heater which includes a small pump to circulate the water.

Published Jan. 14, 2011 3:38 PM - Last modified Jan. 25, 2022 8:17 AM