General Specifications (Continued); Nitrogen Purge For Tsunami - MKS Spectra-Physics Tsunami Pre-Installation Manual

General Specifications (Continued)

Nitrogen Purge for Tsunami

The Tsunami head is sealed so it can be purged. The Model 3910 regulator/filter purge unit is
provided for filtering and drying bottled nitrogen gas. Purging the laser cavity with this gas not
only eliminates the typical problems associated with dust and contamination, but also prevents
tuning discontinuities caused by oxygen and water vapor. Reduction of the latter is important
for operation in the long wavelengths.
•
Model 3910 Pressure range is a maximum of 67 kPa (10 PSI).
•
Input from dry nitrogen gas supply should be limited to a pressure
of 67 kPa (10 lbs. per square inch.
•
Do not connect the Model 3910 to a gas source with a pressure greater
the 80 kPa (12 PSI) or damage to the filters will result.
Use the 3.6 m (12ft) PTFE purge line provided to connect the model 3910 to the laser head.
Note:
Electronic Grade 5, oil free, dry nitrogen is required.
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