Development of the superconducting magnet system for a bioreactor

Author

Kamikado, T. ; Okuda, M. ; Ito, S. ; Saito, K. ; Kawate, Y.

Author_Institution

Supercond. & Cryogenic Technol. Center, Kobe Steel Ltd., Japan

Volume

30

Issue

4

fYear

1994

fDate

7/1/1994 12:00:00 AM

Firstpage

2218

Lastpage

2221

Abstract

A superconducting magnet for a bioreactor system was developed in order to determine the biotechnical and biomedical responses of microorganisms to a high magnetic field. The magnet has a horizontal bore, and the field strength at the center is 7 tesla at an operating current of 120 Amperes. The room-temperature bore diameter is 160 mm. Persistent current mode and detachable power leads are adopted. A cryocooler was installed to cool the radiation shields, which enable continuous operation for 6 months without the need to resupply liquid helium. Magnetic shields cover the cryostat to minimize the leakage field. Two reactors are installed inside and outside of the bore. Magnetic shields also cover the outside reactor in order to reduce the strength of the magnetic fields to less than the geomagnetic level. The temperatures of the reactors are controllable, ranging from 283K to 343K with ±0.1K

Keywords

biological effects of fields; biological techniques and instruments; cellular effects of radiation; low-temperature techniques; magnetic field effects; superconducting magnets; 120 A; 160 mm; 283 to 343 K; 7 T; biomedical responses; bioreactor; biotechnical responses; continuous operation; cryocooler; detachable power leads; field strength; geomagnetic level; leakage field; liquid He; microorganism; operating current; persistent current mode leads; radiation shield cooling; room-temperature bore diameter; superconducting magnet system; Bioreactors; Boring; Geomagnetism; Helium; Inductors; Magnetic shielding; Microorganisms; Persistent currents; Superconducting magnets; Temperature distribution;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/20.305714

Filename

305714