Programme - National Physical Laboratory

The New Kelvin Dissemination Workshop
Programme
27 October 2010
Registration:
09:30
Session 1: 10:00-13:00
Overview of progress in determining the Boltzmann constant
Meeting opening: Graham Machin, NPL
Invited Opening Address
Redefining the kelvin and adapting the SI to the 21st Century
Professor Ian Mills, Emeritus Professor of Chemical Spectroscopy, University
of Reading and President of the Consultative Committee for Units (CCU)
Session Chair – Joachim Fischer, PTB
Introductory address
Highlighting achievements of iMERAplus project and prospects of low
uncertainty determination of the Boltzmann constant
Christof Gaiser, Physikalisch-Technische Bundesanstalt, Germany
Short reviews of the current status, remaining problems, future prospects to attaining
final low uncertainty.
Acoustic determination of the Boltzmann constant
Imera Boltzmann Cooperation for Acoustic Thermometry (WP3)(*)
*Roberto Gavioso, INRIM, Italy(1), G. Benedetto(1), R. Cuccaro(1), S. Davidson(2), D.
del Campo Maldonado(3), M. de Podesta(2), D. Flack(2), R. M. Gavioso(1), P. Gelat(2),
P. A. Giuliano Albo(1), C. Guianvarc’h(1), A. Guillou(4), Y. Hermier(4), M. E. Himbert(4),
G. Machin(2), D. Madonna Ripa(1), A. Merlone(1), F. Moro(1), M. Perkin(2), L. Pitre(4), J.
J. Segovia(5), F. Sparasci(4), G. Sutton(2), D. Truong(4), R. Underwood(2), S. Valkiers(6),
D. Vega-Maza(7), Mª del Carmen Martín(5), Carmen García(3)
(1)
INRiM – Istituto Nazionale di Ricerca Metrologica – I; (2) NPL – National Physical
Laboratory – UK; (3) CEM – Centro Espanol de Metrologia – E; (4) LNE-CNAM –
Laboratoire Commun de Metrologie – F; (5) UVa - University of Valladolid – E; (6)
IRMM – Institute for Reference Materials and Measurements – EC-JRC, B; (7)
Imperial College London, UK
1
11:00
Coffee
Session Chair – Dolores del Campo, CEM
Progress towards the Boltzmann constant determination by the Doppler
Broadening Technique at LPL/LNE-INM
Christophe Daussy(1), Stephan Briaudeau(2) C. Lemarchand(1), M. Triki(1), B.
Darquié(1), C. Chardonnet(1) and Ch. J. Bordé(1)
(1)
Laboratoire de Physique des Lasers, UMR 7538 CNRS, Université Paris 13, 99
av. J.-B. Clément, 93430 Villetaneuse, (2)L.N.E - I.N.M. / C.N.A.M., Saint Denis,
France, 93210 La Plaine Saint-Denis, France
Determination of the Boltzmann constant by means of precision laser
spectroscopy at 1.38 µm on H218O samples
L. Gianfrani (1), A. Castrillo(1), G. Galzerano(2), E. Fasci(1), G. Casa(1), F. Moro(3), A.
Merlone(3), M.D. De Vizia(1), L. Moretti(4), P. Laporta(2)
(1)
Dipartimento di Scienze Ambientali, Seconda Università di Napoli, (2)Dipartimento
di Fisica, Politecnico di Milano and Istituto di Fotonica e Nanotecnologie (IFN-CNR),
Milano, (3(Istituto Nazionale di Ricerca Metrologica, Torino, (4)Dipartimento di
Matematica, Seconda Università di Napoli, Caserta
Dielectric-constant gas thermometry at the triple point of water for determining
the Boltzmann constant - status and prospects
Thorsten Zandt, Physikalisch-Technische Bundesanstalt
Progress in Johnson Noise Thermometry at NIST
Horst Rogalla(1,4),Samuel P. Benz(1), Paul D. Dresselhaus(1), Alessio Pollarolo(1,2),
Jifeng Qu(3), Weston L. Tew(5), Chiharu Urano1,6) and D. Rod White(7)
(1)
National Institute of Standards and Technology (NIST), Boulder, CO and
(5)
Gaithersburg MD USA; (2)Politecnico di Torino, Italy; (3)National Institute of
Metrology (NIM), China; (4)Department of Applied Physics, Univ. Twente, Enschede,
The Netherlands; (6)National Metrology Institute of Japan (NMIJ) Tskuba, Japan;
(7)
Measurement Standards Laboratory (MSL), Lower Hutt, New Zealand
13 :00
Lunch
Session 2: 14:00 -18:00 (continued on 28 October 09:00 - 13:00)
Towards implementing the proposed new kelvin definition – challenging the
status quo of the defined scales
Themed workshop on primary thermometry methods – aim to stimulate discussion at
possible approaches to primary thermometry that could challenge defined scales as
viable dissemination routes. Short presentations focused on particular temperature
2
ranges by participants followed by discussion. All participants are invited to
contribute their views, through submitted (or impromptu) presentations, on (practical)
primary thermometry and the impact of the future kelvin redefinition.
14:00-14:30 Introductory address
The Role of the MeP-K for the realisation and dissemination of the kelvin
Bernd Fellmuth, Chair of CCT-WG1, Physikalisch-Technische Bundesanstalt,
Germany
14:30-16:00 Primary thermometry methods for: >Ag point (and below?) Primary
radiometry (led by Graham Machin, NPL)
A framework for realising and disseminating thermodynamic temperature
above the silver point
Graham Machin, NPL
Absolute radiometric temperature measurement using filter radiometers
K. Anhalt, Physikalisch-Technische Bundesanstalt, Germany; D. Taubert, PTB; J.
Hollandt, PTB
The use of thermodynamic temperatures at NIST in the dissemination of
radiometric and radiance temperature scales
Howard W Yoon, NIST
16:00 - 16:30
Break
16:30 - 18:00 Ar-Ag – (to Al) – Acoustic thermometry (led by Andrea Merlone,
INRIM)
The calibration of the capsule standard platinum resistance thermometers for
the Boltzmann Constant determination experiments. A non trivial issue.
Andrea Merlone(1), Fernando Sparasci( 2), Dolores del Campo(3)
(1)
Istituto Nazionale di Ricerca Metrologica, Torino, Italia
(2)
Laboratoire Commun de Métrologie LNE-CNAM, Paris, France
(3)
Centro Español de Metrología, Tres Cantos, España
Primary thermometry for the “Mise en pratique” of the new kelvin definition
above 500 K
S.Briaudeau, M.Sadli, F.Bourson, E.N.Agnandji, B.Rougié, Y.Hermier
Laboratoire Commun de Métrologie- L.N.E.-C.N.A.M.
C. Lemarchand, M. Triki,,B. Darquié, C. Chardonnet, Ch. J. Bordé and C.Daussy
Laboratoire de Physique des Lasers-C.N.R. S.-Université Paris13
3
A Practical Acoustic Thermometer?
Michael de Podesta, NPL, Gavin Sutton, Robin Underwood, Radka Veltcheva
Johnson Noise Thermometry measurements with high gain stability amplifiers
Massimo Ortolano(1,2), Vincenzo D'Elia(1), Fabrizio Manta(1,2), Luca Callegaro(1)
(1)
Istituto Nazionale di Ricerca Metrologica, Italy, (2)Politecnico di Torino, Italy
19:30
Dinner: The Wharf, Teddington
28 October 2010
Session 2 continued (09.00 – 13.00)
09:00 – 09:30 Introductory address
The role of the water triple point in the kelvin redefinition and
the status of T-T90
Joachim Fischer, Chair of CCT-WG4, Physikalisch-Technische Bundesanstalt,
Germany
09:30 – 11:00
1K – Ar (led by Bernd Fellmuth, Physikalisch-Technische
Bundesanstalt, Germany )
Primary thermometry methods for the range from 1K to the triple point of
argon (84 K)
Bernd Fellmuth, Physikalisch-Technische Bundesanstalt, Germany
Acoustic thermometry using quasi-spherical resonators at LNE
Laurent Pitre, CNAM-LNE, France, F. Sparasci, L. Risegari, D. Truong, A. Guillou,
Y. Hermier
Dielectric-constant gas thermometry – Primary thermometry in the range from
2.5 K to 36 K
Christof Gaiser, Physikalisch-Technische Bundesanstalt, Germany
11.00 – 11.30
Break
11.30 – 12.30
<1K (led by Chris Lusher, Royal Holloway College)
Thermometry below 1 K – Primary Thermometry and Temperature Scales
Chris Lusher, Royal Holloway University of London, Andrew Casey and John
Saunders
4
Temperature Scales and Primary Thermometry below 1 K
Jost Engert, Physikalisch-Technische Bundesanstalt, Germany
12:30-13:00
Summary of workshop; key ideas and themes (led by Graham Machin, NPL)
13:00
Close of meeting and lunch
28 October – afternoon
14.00 Visits/side meetings
1.
Visit to Laboratories
2.
iMERAPlus project: WP sub-group meetings, Acoustic, Doppler Broadening
3.
CCT-WG1 meeting – chair Bernd Fellmuth
5