A W-band Gyro-BWO based on helically corrugated waveguide

Research output: Contribution to conferencePaper

1 Citation (Scopus)

Abstract

We present a viewport for use in ultrahigh vacuum (UHV) based upon the preflattened solder seal design presented in earlier work [Cox , 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 cm(3)/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.

Conference

ConferenceJoint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics
CityCardiff
Period3/09/079/09/07

Fingerprint

corrugated waveguides
traps
ultrahigh vacuum
vacuum chambers
rubidium
solders
vapor pressure
vapors
dipoles
life (durability)
vacuum
cells
atoms

Keywords

  • physics
  • waveguide
  • helically corrugated waveguide

Cite this

He, W., Phelps, A. D. R., Donaldson, C. R., Cross, A. W., & Ronald, K. (2007). A W-band Gyro-BWO based on helically corrugated waveguide. Paper presented at Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics, Cardiff, .
He, Wenlong ; Phelps, A.D.R. ; Donaldson, C. R. ; Cross, A.W. ; Ronald, Kevin. / A W-band Gyro-BWO based on helically corrugated waveguide. Paper presented at Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics, Cardiff, .
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title = "A W-band Gyro-BWO based on helically corrugated waveguide",
abstract = "We present a viewport for use in ultrahigh vacuum (UHV) based upon the preflattened solder seal design presented in earlier work [Cox , 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 cm(3)/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.",
keywords = "physics, waveguide, helically corrugated waveguide",
author = "Wenlong He and A.D.R. Phelps and Donaldson, {C. R.} and A.W. Cross and Kevin Ronald",
year = "2007",
month = "9",
day = "2",
language = "English",
note = "Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics ; Conference date: 03-09-2007 Through 09-09-2007",

}

He, W, Phelps, ADR, Donaldson, CR, Cross, AW & Ronald, K 2007, 'A W-band Gyro-BWO based on helically corrugated waveguide' Paper presented at Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics, Cardiff, 3/09/07 - 9/09/07, .

A W-band Gyro-BWO based on helically corrugated waveguide. / He, Wenlong; Phelps, A.D.R.; Donaldson, C. R.; Cross, A.W.; Ronald, Kevin.

2007. Paper presented at Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics, Cardiff, .

Research output: Contribution to conferencePaper

TY - CONF

T1 - A W-band Gyro-BWO based on helically corrugated waveguide

AU - He, Wenlong

AU - Phelps, A.D.R.

AU - Donaldson, C. R.

AU - Cross, A.W.

AU - Ronald, Kevin

PY - 2007/9/2

Y1 - 2007/9/2

N2 - We present a viewport for use in ultrahigh vacuum (UHV) based upon the preflattened solder seal design presented in earlier work [Cox , 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 cm(3)/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.

AB - We present a viewport for use in ultrahigh vacuum (UHV) based upon the preflattened solder seal design presented in earlier work [Cox , 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 cm(3)/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.

KW - physics

KW - waveguide

KW - helically corrugated waveguide

UR - http://www.astro.cardiff.ac.uk/irmmw-thz2007/

M3 - Paper

ER -

He W, Phelps ADR, Donaldson CR, Cross AW, Ronald K. A W-band Gyro-BWO based on helically corrugated waveguide. 2007. Paper presented at Joint 32nd International Conference on Infrared and Millimeter Waves/15th International Conference on Terahertz Electronics, Cardiff, .