Noise properties of highly balanced YBa2Cu3Oy directly coupled gradiometers and MCG measurement in magnetically unshielded environment

A. Tsukamoto; K. Yokosawa; T. Fukazawa; D. Suzuki; K. Tsukada; T. Miyashita; A. Kandori; K. Takagi

doi:10.1016/S0921-4534(01)01137-6

Noise properties of highly balanced YBa₂Cu₃O_y directly coupled gradiometers and MCG measurement in magnetically unshielded environment

A. Tsukamoto, K. Yokosawa, T. Fukazawa, D. Suzuki, K. Tsukada, T. Miyashita, A. Kandori, K. Takagi

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

3 Citations (Scopus)

Abstract

We have fabricated a first-order, directly coupled gradiometer with a gradiometric balance below 0.1% without balance adjustment by selecting the coupling direction of the pickup coil and the superconducting quantum interference device. The noise of the gradiometers with various balances measured in an unshielded environment decreased in proportion to the improvement in balance. However, the noise of the gradiometer with a balance of 0.03% was limited by the gradient field component of the environmental noise. Magnetocardiogram measurement with this gradiometer in an unshielded environment was also demonstrated.

Original language	English
Pages (from-to)	41-44
Number of pages	4
Journal	Physica C: Superconductivity and its applications
Volume	368
Issue number	1-4
DOIs	https://doi.org/10.1016/S0921-4534(01)01137-6
Publication status	Published - Mar 1 2002
Externally published	Yes

Keywords

Gradiometer
SQUID
YBaCuO

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Energy Engineering and Power Technology
Electrical and Electronic Engineering

Access to Document

10.1016/S0921-4534(01)01137-6

Cite this

Tsukamoto, A, Yokosawa, K, Fukazawa, T, Suzuki, D, Tsukada, K, Miyashita, T, Kandori, A & Takagi, K 2002, 'Noise properties of highly balanced YBa₂Cu₃O_y directly coupled gradiometers and MCG measurement in magnetically unshielded environment', Physica C: Superconductivity and its applications, vol. 368, no. 1-4, pp. 41-44. https://doi.org/10.1016/S0921-4534(01)01137-6

@article{5423f89d176d498bb32dfbdeeb6a50f1,

title = "Noise properties of highly balanced YBa2Cu3Oy directly coupled gradiometers and MCG measurement in magnetically unshielded environment",

abstract = "We have fabricated a first-order, directly coupled gradiometer with a gradiometric balance below 0.1% without balance adjustment by selecting the coupling direction of the pickup coil and the superconducting quantum interference device. The noise of the gradiometers with various balances measured in an unshielded environment decreased in proportion to the improvement in balance. However, the noise of the gradiometer with a balance of 0.03% was limited by the gradient field component of the environmental noise. Magnetocardiogram measurement with this gradiometer in an unshielded environment was also demonstrated.",

keywords = "Gradiometer, SQUID, YBaCuO",

author = "A. Tsukamoto and K. Yokosawa and T. Fukazawa and D. Suzuki and K. Tsukada and T. Miyashita and A. Kandori and K. Takagi",

year = "2002",

month = mar,

day = "1",

doi = "10.1016/S0921-4534(01)01137-6",

language = "English",

volume = "368",

pages = "41--44",

journal = "Physica C: Superconductivity and its applications",

issn = "0921-4534",

publisher = "Elsevier",

number = "1-4",

}

TY - JOUR

T1 - Noise properties of highly balanced YBa2Cu3Oy directly coupled gradiometers and MCG measurement in magnetically unshielded environment

AU - Tsukamoto, A.

AU - Yokosawa, K.

AU - Fukazawa, T.

AU - Suzuki, D.

AU - Tsukada, K.

AU - Miyashita, T.

AU - Kandori, A.

AU - Takagi, K.

PY - 2002/3/1

Y1 - 2002/3/1

N2 - We have fabricated a first-order, directly coupled gradiometer with a gradiometric balance below 0.1% without balance adjustment by selecting the coupling direction of the pickup coil and the superconducting quantum interference device. The noise of the gradiometers with various balances measured in an unshielded environment decreased in proportion to the improvement in balance. However, the noise of the gradiometer with a balance of 0.03% was limited by the gradient field component of the environmental noise. Magnetocardiogram measurement with this gradiometer in an unshielded environment was also demonstrated.

AB - We have fabricated a first-order, directly coupled gradiometer with a gradiometric balance below 0.1% without balance adjustment by selecting the coupling direction of the pickup coil and the superconducting quantum interference device. The noise of the gradiometers with various balances measured in an unshielded environment decreased in proportion to the improvement in balance. However, the noise of the gradiometer with a balance of 0.03% was limited by the gradient field component of the environmental noise. Magnetocardiogram measurement with this gradiometer in an unshielded environment was also demonstrated.

KW - Gradiometer

KW - SQUID

KW - YBaCuO

UR - http://www.scopus.com/inward/record.url?scp=0036498260&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0036498260&partnerID=8YFLogxK

U2 - 10.1016/S0921-4534(01)01137-6

DO - 10.1016/S0921-4534(01)01137-6

M3 - Article

AN - SCOPUS:0036498260

SN - 0921-4534

VL - 368

SP - 41

EP - 44

JO - Physica C: Superconductivity and its applications

JF - Physica C: Superconductivity and its applications

IS - 1-4

ER -