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1. FR2605452 - AIMANT PERMANENT SPHERIQUE A ACCES EQUATORIAL

Office France
Application Number 8614419
Application Date 17.10.1986
Publication Number 2605452
Publication Date 22.04.1988
Grant Number
Grant Date 02.12.1988
Publication Kind B1
IPC
A61B 5/055
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
BDIAGNOSIS; SURGERY; IDENTIFICATION
5Measuring for diagnostic purposes; Identification of persons
05Measuring for diagnosis by means of electric currents or magnetic fields
055involving electronic or nuclear magnetic resonance, e.g. magnetic resonance imaging
G01R 33/38
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
28Details of apparatus provided for in groups G01R33/44-G01R33/6496
38Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
G01R 33/383
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
28Details of apparatus provided for in groups G01R33/44-G01R33/6496
38Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
383using permanent magnets
H01F 7/02
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
7Magnets
02Permanent magnets
CPC
G01R 33/383
GPHYSICS
01MEASURING; TESTING
RMEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
33Arrangements or instruments for measuring magnetic variables
20involving magnetic resonance
28Details of apparatus provided for in groups G01R33/44 - G01R33/64
38Systems for generation, homogenisation or stabilisation of the main or gradient magnetic field
383using permanent magnets
H01F 7/0278
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
FMAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
7Magnets
02Permanent magnets ; [PM]
0273Magnetic circuits with PM for magnetic field generation
0278for generating uniform fields, focusing, deflecting electrically charged particles
Applicants THOMSON CGR
Inventors AUBERT GUY
Priority Data 8614419 17.10.1986 FR
Title
(FR) AIMANT PERMANENT SPHERIQUE A ACCES EQUATORIAL
Abstract
(FR)

UN AIMANT SENSIBLEMENT SPHERIQUE 1, 2 COMPORTANT DEUX STRUCTURES CREUSES V, EN VIS-A-VIS, DE FORME GENERALE HEMISPHERIQUES, ET AIMANTEES EST PROPOSE POUR PRODUIRE UN CHAMP D'INDUCTION B UNIFORME ALLANT D'UNE STRUCTURE A L'AUTRE. EN ECARTANT SUFFISAMMENT LES DEUX STRUCTURES ON CREE UNE OUVERTURE EQUATORIALE E POUR PERMETTRE L'INTRODUCTION DE CORPS A SOUMETTRE A CETTE INDUCTION. ON MONTRE QUE L'HOMOGENEITE PEUT ETRE ATTEINTE A UN ORDRE DONNE SI CHAQUE STRUCTURE EST CONSTITUEE PAR DES ANNEAUX 3-8, EN FORME DE PORTION DE COURONNE SPHERIQUE, OBTENUS PAR JUXTAPOSITION DE BLOCS MAGNETIQUES, ET SI LE NOMBRE DE BLOCS DANS CHAQUE ANNEAU EST SUPERIEUR OU EGAL A 4 FOIS LE NOMBRE D'ANNEAUX DANS CHAQUE STRUCTURE.

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