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

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

Abstract

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

Publisher: American Institute of Physics
Year: 2009
DOI identifier: 10.1063/1.3075547
OAI identifier: oai:dro.dur.ac.uk.OAI2:7397
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