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Development of three-dimensional compact magnetic dosimeter for environmental magnetic field monitoring

Technical Report:

Abstract

A computer-driven, three-dimensional magnetic fluxmeter to be used also for magnetic field dosimetry has been developed. A magnetic monitor applicable to this object should be measurable to an absolute value of local magnetic field strength and also be able to record its time integration as a measure of exposed dose to the magnetic field. The present fluxmeter consists of signal amplifiers, rectifiers, an A/D converter, and a pocket computer (PC). The signal outputs from the sensors are processed with the PC to compose an absolute strength of magnetic flux density and its time-integrated value. The whole system is driven by a battery and is quite compact in size to be used as a handy portable system. Further details of the design, idea, construction, specification, and testing result of the fluxmeter are described. The measurable range are from 0.4G to 20,000G in normal mode and 8mG to 400G in high-sensitivity AC mode, and the sensitivity is well independent of the magnetic field direction. These measured data are displayed in real time on the LCD panel of the PC and memorized in RAM files. Possible application of the fluxmeter are discussed with special attention to the search of the leakage and/or disturbing  More>>
Publication Date:
Jul 01, 1991
Product Type:
Technical Report
Report Number:
NIFS-MEMO-2
Reference Number:
SCA: 700430; PA: JPN-91:011016; SN: 92000630432
Resource Relation:
Other Information: PBD: Jul 1991
Subject:
70 PLASMA PHYSICS AND FUSION TECHNOLOGY; FLUXGATE MAGNETOMETERS; THERMONUCLEAR DEVICES; MAGNETIC FIELDS; HALL EFFECT; BIOLOGICAL ADAPTATION; SPECIFICATIONS; ENVIRONMENTAL IMPACTS; THREE-DIMENSIONAL CALCULATIONS; 700430; MAGNET COILS AND FIELDS
OSTI ID:
10109238
Research Organizations:
National Inst. for Fusion Science, Nagoya (Japan)
Country of Origin:
Japan
Language:
Japanese
Other Identifying Numbers:
Other: ON: DE92750825; TRN: JP9111016
Availability:
OSTI; NTIS (US Sales Only); INIS
Submitting Site:
JPN
Size:
48 p.
Announcement Date:
Jun 30, 2005

Technical Report:

Citation Formats

Kubota, Yusuke, Obayashi, Haruo, Miyahara, Akira, Ohno, Kazuko, Nakamura, Kouichi, and Horii, Kenzi. Development of three-dimensional compact magnetic dosimeter for environmental magnetic field monitoring. Japan: N. p., 1991. Web.
Kubota, Yusuke, Obayashi, Haruo, Miyahara, Akira, Ohno, Kazuko, Nakamura, Kouichi, & Horii, Kenzi. Development of three-dimensional compact magnetic dosimeter for environmental magnetic field monitoring. Japan.
Kubota, Yusuke, Obayashi, Haruo, Miyahara, Akira, Ohno, Kazuko, Nakamura, Kouichi, and Horii, Kenzi. 1991. "Development of three-dimensional compact magnetic dosimeter for environmental magnetic field monitoring." Japan.
@misc{etde_10109238,
title = {Development of three-dimensional compact magnetic dosimeter for environmental magnetic field monitoring}
author = {Kubota, Yusuke, Obayashi, Haruo, Miyahara, Akira, Ohno, Kazuko, Nakamura, Kouichi, and Horii, Kenzi}
abstractNote = {A computer-driven, three-dimensional magnetic fluxmeter to be used also for magnetic field dosimetry has been developed. A magnetic monitor applicable to this object should be measurable to an absolute value of local magnetic field strength and also be able to record its time integration as a measure of exposed dose to the magnetic field. The present fluxmeter consists of signal amplifiers, rectifiers, an A/D converter, and a pocket computer (PC). The signal outputs from the sensors are processed with the PC to compose an absolute strength of magnetic flux density and its time-integrated value. The whole system is driven by a battery and is quite compact in size to be used as a handy portable system. Further details of the design, idea, construction, specification, and testing result of the fluxmeter are described. The measurable range are from 0.4G to 20,000G in normal mode and 8mG to 400G in high-sensitivity AC mode, and the sensitivity is well independent of the magnetic field direction. These measured data are displayed in real time on the LCD panel of the PC and memorized in RAM files. Possible application of the fluxmeter are discussed with special attention to the search of the leakage and/or disturbing error fields around LHD (large Helical Device) and other magnetic systems, the individual dose control to the workers in strong magnetic fields, and the evaluation of the effects of long irradiation of magnetic fields. (author).}
place = {Japan}
year = {1991}
month = {Jul}
}