Stereoscan: Difference between revisions
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HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200. | HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200. | ||
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=Current Status= | =Current Status= | ||
March 30th: Moving complete! The SEM is now in the workshop | June 23rd: Summary. Roughing pump works, seals adequate to fire turbo. Probably just needs cleaning and testing, similar in scope to commissioning a new 3D printer. -mirage335 | ||
March 31st: Cleaned the plinth and took photographs of the vacuum components. [https://dl.dropboxusercontent.com/u/45972/sem/sem_cleaning/index.html Available here]. -Dan K. | |||
* <strike>Oil diffusion</strike>Turbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in. | |||
* Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.) | |||
* Compressed air needed to get more dust out | |||
March 30th: Moving complete! The SEM is now in the workshop | |||
March 29th: Awaiting pick-up and installation (March 29th and 30th). | March 29th: Awaiting pick-up and installation (March 29th and 30th). | ||
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# http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only]) | # http://757labs.org/wiki/Projects/SEM ([http://pastebin.com/vWPj8eHu archival link -- text only]) | ||
= | =Documentation= | ||
* [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions] | * [http://i.imgur.com/rMErvPd.png Stereoscan 200 dimensions] | ||
* [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)] | * [https://dl.dropboxusercontent.com/u/45972/sem/s200.zip S200 operating instructions (2 MB zip)] | ||
* Edwards E2M-12 roughing pump user instruction manual: http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf | |||
=Software= | |||
* SEMinal - a monitor for the vacuum pump - https://codeberg.org/ubuntourist/seminal | |||
=Resources= | =Resources= | ||
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We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems. | We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems. | ||
* Dan K. (plasma on IRC): SEM information, documentation, repair information, problems | |||
=Supplies wishlist= | =Supplies wishlist= | ||
* Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). | * Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers." | ||
** 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm. | |||
* Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8) | * Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8) | ||
* Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable) | |||
=More Photos= | =More Photos= | ||
Latest revision as of 01:00, 12 November 2019
HacDC is in the process of refurbishing a scanning electron microscope: a Cambridge Stereoscan 200.
Current Status
June 23rd: Summary. Roughing pump works, seals adequate to fire turbo. Probably just needs cleaning and testing, similar in scope to commissioning a new 3D printer. -mirage335
March 31st: Cleaned the plinth and took photographs of the vacuum components. Available here. -Dan K.
Oil diffusionTurbo molecular pump was hanging due to the lip falling out of the rubber suspension. Could be cleaned and probably popped back in.
- Broken switch on roughing pump was bypassed internally. Plugging in the outlet should activate the pump. (This pump normally runs 24/7 when the machine is operational.)
- Compressed air needed to get more dust out
March 30th: Moving complete! The SEM is now in the workshop
March 29th: Awaiting pick-up and installation (March 29th and 30th).
March 23rd: A space in the workshop has been cleared. Photo: http://i.imgur.com/BDNWL5z.jpg
Maintenance Information
Maintenance and repair logs will be kept on an ongoing basis. For previous status and repairs, see:
Documentation
- Edwards E2M-12 roughing pump user instruction manual: http://www.idealvac.com/files/ManualsII/Edwards_E2M2_to_E2M12_Users_Instruction_Manual.pdf
Software
- SEMinal - a monitor for the vacuum pump - https://codeberg.org/ubuntourist/seminal
Resources
- The original S200 operating instructions will be 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.
- SPI supplies: http://www.2spi.com
- O-ring supplier: http://www.parker.com
Contacts
We'll have a list here of HacDC members who are responsible for the SEM, including people that should be notified about problems.
- Dan K. (plasma on IRC): SEM information, documentation, repair information, problems
Supplies wishlist
- Apiezon M vacuum grease for "O" rings, to be used for vacuum seals at room temperature: http://www.2spi.com/catalog/vac/apiezon/apiezon-m.php ($70 for 25g). Edit: page 058 of the manual states "The use of O ring grease is not recommended on any O rings, but a small amount may be used, if necessary, on moving seals e.g. the specimen stage and apereture changer micrometers."
- 31Mar2014 - there's a syringe of Ap. T grease in the space (~2g). It's on top of the SEM's chamber atm.
- Replacement "O" ring for chamber->gun vacuum tube, for the chamber-side mounting adapter. (Will this work? http://www.grainger.com/product/O-Ring-1RHY8)
- Inland 19 pump oil for Edwards E2M-12 roughing pump: http://www.sisweb.com/vacuum/sis/inland.htm ($30 per gallon) (needs confirmation that this oil is suitable)