From HacDC Wiki

Revision as of 22:05, 24 August 2015 by Ewaldo (talk | contribs) (Adding stereoscan 200 operating instructions)

HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.

SEM in workshop

Current Status

Cleaning and assessment in progress.

July 18: Roughing pump works, turbo spins up to full speed. The vacuum controls operate but don't light up as expected, and the pressure readout is not showing a reading. The console turns on and produces video output with the correct data overlay. The filament control reads "bad filament," despite the filament continuity being OK. There is an interlock between the pressure gauge and console that may be keeping the filament off. We'll need to verify the pressure gauge output and see how to trigger that interlock.

See Stereoscan_Operators_Log for details.


Manuals and Images

Similar but smaller unit manual File:Pfeiffer Balzers TPH TPU 110 .pdf
Table of pumps to compatible controllers File:Pfeiffer table.pdf
View of pump 1 Media:PfeifferTHP190_1.gif
View of pump 2 (connector side) Media:PfeifferTHP190_2.gif
View of pump 3 (other side) Media:PfeifferTHP190_3.gif


757 Labs

Previous owners (757 Labs, another hackerspace) attempting repairs compiled some information at:

Additional Resources

  • The original S200 operating instructions are available at the space in a three-ring binder near the machine.
  • If possible, members will also have access to a PDF copy of Scanning Electron Microscopy - A Student's Handbook, 1980, self-published by Michael Postek, et al. This book was widely used by microscopists and is still regarded as a good learning reference, but the original binding is rare and prone to falling apart. It might be possible to use the PDF copy for private, educational use.

More Photos


We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.

Mirage335 (talk) Custom electronic control replacement circuitry.

Plasma Dan K., plasma on IRC. SEM information, documentation, repair information, problems

Pages in category "Stereoscan"

The following 3 pages are in this category, out of 3 total.