Differences

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--- vacuum_maintenance [2013/10/08 12:51] – chris
+++ vacuum_maintenance [2020/03/06 09:04] (current) – external edit 127.0.0.1
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+== Headline ==
+A set of very useful [[http://www.normandale.edu/departments/stem-and-education/vacuum-and-thin-film-technology/vacuum-lab/articles/conditioning-vacuum-chambers|articles on vacuum technology, maintenance etc.]]
 Mechanical pumps get oil changes every six months.
 == Varian Pumping Station ==
 ^Date ^Name ^Description^
-|10/2013 | CR | Disassembled spectrometer tube and cold cathode gauge.  Both were cleaned and restored to specification.  Both filaments are intact at this time. They are of the thoriated Iridium type. Spectrometer tube was calibrated with a leak at 10e-6 cc/s |
+|10/2013 | CR | Disassembled spectrometer tube and cold cathode gauge.  Both were cleaned and restored to specification.  Both filaments are intact at this time. They are of the thoriated Iridium type. Spectrometer tube was calibrated with a He leak at 10e-6 cc/s and was also retuned to maximize the He signal.|
 |12/2011 |    | Roughing pump replaced|
 |06/2011 | JF | Changed oil, cleaned glass, flushed with new oil|

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