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filament

TEM Control Panel Filament

TEM PLEASE READ

So far the filament current problem appears to be repaired. The replacement vibration isolator has not been installed. This means that one corner of the TEM frame is resting on the floor. Vibrations in the room and elsewhere are transmitted into the TEM and therefore the images. It will not …

TEM

TEM update

August 21, 2012. The TEM electron beam problem appears to be repaired. I have been able to achieve a stable 200kV beam ~10 times now so I believe the problem is repaired. I will work to achieve 300kV over the next few weeks. There is one problem that remains to …

TEM Control Panel Filament

TEM update

June 7, 2012. Unfortunately, the TEM is still not working – the filament will not saturate. This sounds like an easy problem to repair, however, our TEM is a special unit capable of producing 400kV accelerating voltage. It was built 20 yrs ago. The components are special and of a unique …

TEM status

April 13, 2012. After 3 days of work, the TEM is back online.   The system is conditioned to 200kV and aligned at 100kV and 200kV.  I will work on 300kV over the weekend.  I installed a new filament during the process, so the illumination is brighter than it was.   …