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A versatile and reliably re-usable ultra-high vacuum viewport

Weatherill, K.; Pritchard, J.D.; Griffin, P.F.; Dammalapati, U.; Adams, C.S.; Riis, E.


J.D. Pritchard

P.F. Griffin

U. Dammalapati

E. Riis


We present a viewport for use in ultrahigh vacuum (UHV) based upon the preflattened solder seal design presented in earlier work [ Cox et al., Rev. Sci. Instrum. 74, 3185 (2003) ]. The design features significant modifications to improve long term performance. The windows have been leak tested to less than 10−10 atm cm3/s. From atom number measurements in an optical dipole trap loaded from a vapor cell magneto-optical trap inside a vacuum chamber accommodating these viewports, we measure a trap lifetime of 9.5 s suggesting a pressure of around 10−10 Torr limited by background rubidium vapor pressure. We also present a simplified design where the UHV seal is made directly to a vacuum pipe.


Weatherill, K., Pritchard, J., Griffin, P., Dammalapati, U., Adams, C., & Riis, E. (2009). A versatile and reliably re-usable ultra-high vacuum viewport. Review of Scientific Instruments, 80(2),

Journal Article Type Article
Publication Date Feb 1, 2009
Deposit Date Sep 24, 2010
Publicly Available Date Oct 6, 2010
Journal Review of Scientific Instruments
Print ISSN 0034-6748
Electronic ISSN 1089-7623
Publisher American Institute of Physics
Peer Reviewed Not Peer Reviewed
Volume 80
Issue 2
Publisher URL


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