Development of a four-channel Johnson noise thermometry system

Alessio Pollarolo; Chiharu Urano; Paul D. Dresselhaus; Jifeng Qu; Horst Rogalla; Samuel P. Benz

doi:10.1109/TIM.2010.2098110

Development of a four-channel Johnson noise thermometry system

Alessio Pollarolo^*
, Chiharu Urano
, Paul D. Dresselhaus
, Jifeng Qu
, Horst Rogalla
, Samuel P. Benz

^*Corresponding author for this work

Research output: Contribution to journal › Article › Academic › peer-review

2 Citations (Scopus)

Abstract

Long integration periods are necessary to reach low uncertainty when measuring temperature through Johnson noise thermometry (JNT). The main goal of the National Institute of Standards and Technology JNT program is to achieve a combined relative uncertainty of 6 × 10^-6 in the measurement of the water triple point temperature, which, in turn, allows determination of Boltzmann's constant at the same uncertainty. To this end, a four-channel JNT system, which will reduce the measurement period twofold, is being developed with new components, including a switchboard, analog-to-digital converters (ADCs), and a programmable recharging power supply system. A significant source of systematic error that was discovered while implementing the new ADCs is described. New measurements are presented using a doubled ADC sampling rate, which show the potential for higher measurement bandwidth.

Original language	English
Pages (from-to)	2655-2659
Number of pages	5
Journal	IEEE transactions on instrumentation and measurement
Volume	60
Issue number	7
DOIs	https://doi.org/10.1109/TIM.2010.2098110
Publication status	Published - Jul 2011

Keywords

n/a OA procedure
Correlation
Digitalanalog conversion
Josephson arrays
Measurement units
Noise measurement
Quantization
Signal synthesis
Standards
Temperature
Boltzmann's equation

Access to Document

10.1109/TIM.2010.2098110

Cite this

@article{cd58f4f1862e48cdb1e42cf832fdfacb,

title = "Development of a four-channel Johnson noise thermometry system",

abstract = "Long integration periods are necessary to reach low uncertainty when measuring temperature through Johnson noise thermometry (JNT). The main goal of the National Institute of Standards and Technology JNT program is to achieve a combined relative uncertainty of 6 {\texttimes} 10-6 in the measurement of the water triple point temperature, which, in turn, allows determination of Boltzmann's constant at the same uncertainty. To this end, a four-channel JNT system, which will reduce the measurement period twofold, is being developed with new components, including a switchboard, analog-to-digital converters (ADCs), and a programmable recharging power supply system. A significant source of systematic error that was discovered while implementing the new ADCs is described. New measurements are presented using a doubled ADC sampling rate, which show the potential for higher measurement bandwidth.",

keywords = "n/a OA procedure, Correlation, Digitalanalog conversion, Josephson arrays, Measurement units, Noise measurement, Quantization, Signal synthesis, Standards, Temperature, Boltzmann's equation",

author = "Alessio Pollarolo and Chiharu Urano and Dresselhaus, \{Paul D.\} and Jifeng Qu and Horst Rogalla and Benz, \{Samuel P.\}",

year = "2011",

month = jul,

doi = "10.1109/TIM.2010.2098110",

language = "English",

volume = "60",

pages = "2655--2659",

journal = "IEEE transactions on instrumentation and measurement",

issn = "0018-9456",

publisher = "IEEE",

number = "7",

}

TY - JOUR

T1 - Development of a four-channel Johnson noise thermometry system

AU - Pollarolo, Alessio

AU - Urano, Chiharu

AU - Dresselhaus, Paul D.

AU - Qu, Jifeng

AU - Rogalla, Horst

AU - Benz, Samuel P.

PY - 2011/7

Y1 - 2011/7

N2 - Long integration periods are necessary to reach low uncertainty when measuring temperature through Johnson noise thermometry (JNT). The main goal of the National Institute of Standards and Technology JNT program is to achieve a combined relative uncertainty of 6 × 10-6 in the measurement of the water triple point temperature, which, in turn, allows determination of Boltzmann's constant at the same uncertainty. To this end, a four-channel JNT system, which will reduce the measurement period twofold, is being developed with new components, including a switchboard, analog-to-digital converters (ADCs), and a programmable recharging power supply system. A significant source of systematic error that was discovered while implementing the new ADCs is described. New measurements are presented using a doubled ADC sampling rate, which show the potential for higher measurement bandwidth.

AB - Long integration periods are necessary to reach low uncertainty when measuring temperature through Johnson noise thermometry (JNT). The main goal of the National Institute of Standards and Technology JNT program is to achieve a combined relative uncertainty of 6 × 10-6 in the measurement of the water triple point temperature, which, in turn, allows determination of Boltzmann's constant at the same uncertainty. To this end, a four-channel JNT system, which will reduce the measurement period twofold, is being developed with new components, including a switchboard, analog-to-digital converters (ADCs), and a programmable recharging power supply system. A significant source of systematic error that was discovered while implementing the new ADCs is described. New measurements are presented using a doubled ADC sampling rate, which show the potential for higher measurement bandwidth.

KW - n/a OA procedure

KW - Correlation

KW - Digitalanalog conversion

KW - Josephson arrays

KW - Measurement units

KW - Noise measurement

KW - Quantization

KW - Signal synthesis

KW - Standards

KW - Temperature

KW - Boltzmann's equation

UR - https://www.scopus.com/pages/publications/79958284866

U2 - 10.1109/TIM.2010.2098110

DO - 10.1109/TIM.2010.2098110

M3 - Article

AN - SCOPUS:79958284866

SN - 0018-9456

VL - 60

SP - 2655

EP - 2659

JO - IEEE transactions on instrumentation and measurement

JF - IEEE transactions on instrumentation and measurement

IS - 7

ER -

Development of a four-channel Johnson noise thermometry system

Abstract

Keywords

Access to Document

Other files and links

Fingerprint

Development of a four-channel system for Johnson noise thermometry

Cite this