I want to use a Varian 979 as a pumping station to pump-clean a cold head. The cold head was filled with pure He4, so the leak rate would overload. Can I turn off the filament of the mass spectrometer to prevent overloading?
I want to use a Varian 979 as a pumping station to pump-clean a cold head. The cold head was filled with pure He4, so the leak rate would overload. Can I turn off the filament of the mass spectrometer to prevent overloading?
