Skip to main content
U.S. flag

An official website of the United States government

Official websites use .gov
A .gov website belongs to an official government organization in the United States.

Secure .gov websites use HTTPS
A lock ( ) or https:// means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.

Calibration of thin-film platinum sensors for use in the JILA Sr II Clock

Published

Author(s)

Weston L. Tew, Travis L. Nicholson, Ross B. Hutson

Abstract

A set two pairs of thin-film platinum resistance thermometers (TFPRTs) have been calibrated on the International Temperature Scale of 1990 (ITS-90) for the purposes of determining temperatures inside the JILA Sr II Optical Lattice Clock vacuum chamber. The calibration concerns the use of a special test chamber for two high-vacuum immersion probes with two TFPRTs each. The data are presented as a function of temperature, self-heating power, exchange gas / vacuum pressure, and axial gradients. We report the procedures, results, and analysis for these calibrations and estimate the resulting uncertainties for transferring the calibrations and correction equations to the Sr II chamber.
Citation
NIST Interagency/Internal Report (NISTIR) - 8046
Report Number
8046

Keywords

calibration, Temperature, thin-film platinum, vacuum, ITS-90, thermometry

Citation

Tew, W. , Nicholson, T. and Hutson, R. (2015), Calibration of thin-film platinum sensors for use in the JILA Sr II Clock, NIST Interagency/Internal Report (NISTIR), National Institute of Standards and Technology, Gaithersburg, MD, [online], https://doi.org/10.6028/NIST.IR.8046 (Accessed April 19, 2024)
Created March 29, 2015, Updated June 2, 2021