European Dissemination of the ultra-low temperature scale, PLTS-2000

R Rusby*, D Head, D Cousins, H Godfrin, YM Bunkov, RE Rapp, F Gay, M Meschke, C Lusher, J Li, A Casey, D Shvarts, B Cowan, J Saunders, Gennadiy M. Mikheev, J Pekola, K Gloos, P Hernandez, S Triqueneaux, M de GrootA Peruzzi, R Jochemsen, A Chinchure, E van Heumen, GE de Groot, W Bosch, F Mathu, J Flokstra, D Veldhuis, Y Hermier, L Pitre, A Verge, B Fellmuth, J Engert

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionScientificpeer-review

Abstract

The first phase of the EU collaborative project on sub-kelvin thermometry, 'ULT Dissemination', is nearing completion, leading to the development of several thermometers and devices, and the instrumentation needed to disseminate the new Provisional Low Temperature Scale, PLTS-2000, to users. Principal among these are a current-sensing noise thermometer (CSNT), a CMN thermometer adapted for industrial use, a Coulomb blockade thermometer, a second-sound acoustic thermometer and a superconductive reference device SRD-1000. Several partners have set up He-3 melting-pressure thermometers to realise the PLTS-2000, and will check it using Pt-NMR, CMN and other thermometers. The scale, which was formally adopted by the Comite International des Poids et Mesures in October 2000, covers the range of temperature from 1 K down to 0.9 mK, and is defined by an equation for the melting pressure of He-3. The SRD employs novel fabrication and detection techniques with up to 10 samples, and is expected to meet the requirement for fixed points below 1 K, formerly filled by the NIST SRM 767 and 768. Other devices included in the project are ruthenium oxide sensors and a self-contained He-3 melting pressure thermometer. This paper reviews the project progress to date and indicates the potential for research, metrological and industrial application of the devices developed.

Original languageEnglish
Title of host publicationTEMPERATURE: ITS MEASUREMENT AND CONTROL IN SCIENCE AND INDUSTRY
EditorsDC Ripple
Place of PublicationNew York
PublisherAmerican Institute of Physics
Pages89-94
Number of pages6
ISBN (Print)0-7354-0153-5
Publication statusPublished - 2003
MoE publication typeA4 Article in a conference publication
EventInternational Temperature Symposium - CHICAGO, United States
Duration: 21 Oct 200224 Oct 2002
Conference number: 8

Publication series

NameAIP CONFERENCE PROCEEDINGS
PublisherAmerican Institute of Physics
Volume684
ISSN (Print)0094-243X

Conference

ConferenceInternational Temperature Symposium
CountryUnited States
CityCHICAGO
Period21/10/200224/10/2002

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