BL831 In Situ LN2 Rapid Shower Deicer

After a crystal has been centered at Mid or High Mag,it can be deiced, if needed, 
by entering the following command in a terminal window: 

>>>          wash_pin.com 

The Low/Mid/High Mag Collimator stage will move all the way down.
After cooling down the small LN2 nozzle, a linear stage will quickly move over your crystal and sweep an LN2 spray over your rotating sample.

The Stage and rotational phi angle will then return to where they were.

****************   Filling the LN2 Shower Dewar ************************

The deicer has its own little dewar.  
It needs to be filled every 6-8 hours.
If it does need to be filled, it will do so the next time wash_pin.com is run.

It takes a minute or two to complete.

After the dewar has been filled, 
you will be prompted to enter the "wash_pin.com" command, again.