Loss measurements on superconducting Nb by a cryogenic dual compensated calorimeter for the implementation of the kilogram standard by the levitation mass method

H. Kajastie (Corresponding Author), Kaj Nummila, Anssi Rautiainen, K. Riski, A. Satrapinski

Research output: Contribution to journalArticleScientificpeer-review

6 Citations (Scopus)

Abstract

A cryogenic dual compensated calorimeter was constructed for energy loss measurements in superconducting materials. The losses induced by slowly varying periodic magnetic fields (amplitudes <50 mT) in field-generating coils fabricated from different niobium wires were at the level of 500 nJ/cycle. Measurable losses are caused by incomplete Meissner effect in tested superconducting materials. The results of the study show the difficulties and limitations in the implementation of the kilogram standard using the 'superconducting magnetic levitation mass' method.
Original languageEnglish
Pages (from-to)68 - 74
Number of pages7
JournalMetrologia
Volume45
Issue number1
DOIs
Publication statusPublished - 2008
MoE publication typeA1 Journal article-refereed

Fingerprint

Calorimeters
Cryogenics
Superconducting materials
Magnetic levitation
Niobium
Energy dissipation
Wire
Magnetic fields

Keywords

  • energy loss measurement
  • materials
  • superconductivity
  • superconducting calorimeters
  • cryogenic
  • niobium

Cite this

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title = "Loss measurements on superconducting Nb by a cryogenic dual compensated calorimeter for the implementation of the kilogram standard by the levitation mass method",
abstract = "A cryogenic dual compensated calorimeter was constructed for energy loss measurements in superconducting materials. The losses induced by slowly varying periodic magnetic fields (amplitudes <50 mT) in field-generating coils fabricated from different niobium wires were at the level of 500 nJ/cycle. Measurable losses are caused by incomplete Meissner effect in tested superconducting materials. The results of the study show the difficulties and limitations in the implementation of the kilogram standard using the 'superconducting magnetic levitation mass' method.",
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Loss measurements on superconducting Nb by a cryogenic dual compensated calorimeter for the implementation of the kilogram standard by the levitation mass method. / Kajastie, H. (Corresponding Author); Nummila, Kaj; Rautiainen, Anssi; Riski, K.; Satrapinski, A.

In: Metrologia, Vol. 45, No. 1, 2008, p. 68 - 74.

Research output: Contribution to journalArticleScientificpeer-review

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T1 - Loss measurements on superconducting Nb by a cryogenic dual compensated calorimeter for the implementation of the kilogram standard by the levitation mass method

AU - Kajastie, H.

AU - Nummila, Kaj

AU - Rautiainen, Anssi

AU - Riski, K.

AU - Satrapinski, A.

PY - 2008

Y1 - 2008

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KW - energy loss measurement

KW - materials

KW - superconductivity

KW - superconducting calorimeters

KW - cryogenic

KW - niobium

U2 - 10.1088/0026-1394/45/1/010

DO - 10.1088/0026-1394/45/1/010

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