2-7 June 2019
Simon Fraser University
America/Vancouver timezone
Welcome to the 2019 CAP Congress Program website! / Bienvenue au siteweb du programme du Congrès de l'ACP 2019 !

48 - Building a Portable, Cold-Atom Pressure Standard

4 Jun 2019, 17:11
2m
SWH 9082 + AQ South-East Corner / coin sud-est (Simon Fraser University)

SWH 9082 + AQ South-East Corner / coin sud-est

Simon Fraser University

Poster not-in-competition (Undergraduate Student) / Affiche non-compétitive (Étudiant(e) du 1er cycle) Division of Atomic, Molecular and Optical Physics, Canada / Division de la physique atomique, moléculaire et photonique, Canada (DAMOPC-DPAMPC) DAMOPC Poster Session & Student Poster Competition Finals (26) | Session d'affiches DPAMPC et finales du concours d'affiches étudiantes (26)

Speaker

Perrin Waldock (UFV)

Description

Vacuum measurement plays a central role in a wide range of scientific and industrial applications including residual gas analysis, semi-conductor device manufacture, and atmospheric modeling. Remarkably, no primary pressure standard existed for the high (HV) and ultra-high vacuum (UHV) regime (below 10−7 Pa) until recently. In 2018, a UBC and BCIT collaboration succeeded in producing the first primary pressure standard for HV and UHV. Based on a cold-atom sensor, this new technique for particle detection requires no calibration and relies on immutable laws of nature - specifically, the interaction potentials between atoms and molecules. The existing cold-atom standard is immobile and the size of several refrigerators; to see wide use and to promote worldwide adoption, an apparatus must be shippable, and usable in non-ideal conditions by non-experts. To realize this, we are assembling a miniaturized version of the apparatus, that will be robust to vibrations, mechanical shock, and temperature changes. We will also investigate methods of automatically operating and re-calibrating the apparatus. This device will allow us to disseminate the cold-atom pressure standard worldwide starting with a plan to compare the cold atom primary standard with an existing secondary pressure standard (based on orifice-flow) at the National Institute of Standards and Technology. This work will also lay the groundwork for the construction of commercial absolute pressure standards.

Primary author

Perrin Waldock (UFV)

Co-authors

Prof. Kirk Madison (UBC) Pinrui Shen (University of British Columbia Physics Department) James Booth (BCIT)

Presentation Materials