SEM: Difference between revisions
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(Undo revision 14143 by 114.108.215.233 (Talk)) |
(Added Manual) |
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# (long term) build digital capture stage to replace CRT mechanism (2010-06-15) | # (long term) build digital capture stage to replace CRT mechanism (2010-06-15) | ||
# build sputter coater for specimen preparation (2010-06-15) | # build sputter coater for specimen preparation (2010-06-15) | ||
# test repair of X Stigmator circuit. Replaced 741 op amp. (ongoing, work began 2010-11-20) | |||
=== Repair and Enhancement === | === Repair and Enhancement === | ||
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* poorly designed wire harness may cause linear op amp and transistor on the J1 board of the CRT module to fail | * poorly designed wire harness may cause linear op amp and transistor on the J1 board of the CRT module to fail | ||
* camera mounting stage and bellows hood for slow-scan exposure. Proposed (2010-06-15), Completed by Mike, Miloh, and Chris (2010-11-06) | * camera mounting stage and bellows hood for slow-scan exposure. Proposed (2010-06-15), Completed by Mike, Miloh, and Chris (2010-11-06) | ||
=== Documentation === | |||
[[Media:ISI_Mini-TV_SEM_Manual-Troubleshooting-Reference_Guide.pdf]] |
Revision as of 15:47, 30 November 2010
The Scanning Electron Microscope at Noisebridge.
- "TV Mini-SEM (R)" by ISI (International Scientific Instruments)
- lives in the "science ghetto" on the west end of the south wall at 2169.
- is tended by Mike Kan and the rest of the SEM mailing list
Warnings
- If you release the vacuum without venting the pump hose, pump oil will flood the chamber and contaminate the entire mechanism, requiring 10 hours of cleanup.
- If you vent air into the column without powering down the filament, you'll probably destroy the filament ($100).
- If you
Startup procedures
- get the power cord from Mike.
- (to be continued)
Todo list
- column liner needs to be replaced. Larry may be able to provide a clean liner. (2010-06-15)
- (long term) build digital capture stage to replace CRT mechanism (2010-06-15)
- build sputter coater for specimen preparation (2010-06-15)
- test repair of X Stigmator circuit. Replaced 741 op amp. (ongoing, work began 2010-11-20)
Repair and Enhancement
- schematics framed behind SEM are to a similar, potentially slightly more modern model
- poorly designed wire harness may cause linear op amp and transistor on the J1 board of the CRT module to fail
- camera mounting stage and bellows hood for slow-scan exposure. Proposed (2010-06-15), Completed by Mike, Miloh, and Chris (2010-11-06)
Documentation
Media:ISI_Mini-TV_SEM_Manual-Troubleshooting-Reference_Guide.pdf