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- VERY IMPORTANT! Make sure the sample space is opened to vacuum- the sample space valve is open and the vacuum line is open to pump on the cryostat. If the valve is closed while heating, the cryostat windows can pop and it could end your experiment for several hours, if not for the rest of your time!!
- Note the position of the flow control needle valve on the flow controller, you will return the knob to this position at the end. Reduce the flow by rotating the knob clockwise but do not completely shut off the helium flow. (could probably use a picture here)
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