TY - JOUR
T1 - Precision magnetic field mapping for the 3He neutron spin filter
AU - Ino, Takashi
AU - Arimoto, Yasushi
AU - Kira, Hiroshi
AU - Sakaguchi, Yoshifumi
AU - Shinohara, Takenao
AU - Sakai, Kenji
AU - Oku, Takayuki
AU - Kakurai, Kazuhisa
AU - Ohoyama, Kenji
N1 - Funding Information:
This work was partially supported by Quantum Beam Technology Program, JST, MEXT.
PY - 2013
Y1 - 2013
N2 - 3He neutron spin filters require a homogeneous magnetic field, otherwise the nuclear polarization of the 3He gas will easily be lost by small magnetic field gradients. Magnetic cavities with field gradients of 10-4/cm or better are often in demand, and many such cavities - Helmholtz coils, solenoids, permanent magnet circuits, etc - have been developed [1]. These magnetic cavities are designed mostly by using simulations, but the actual magnetic fields may differ from the calculations because of the presence of the environmental magnetic field as well as nearby magnetic materials. To evaluate the real magnetic fields, a precision magnetometry system with a precision of 10-5 was developed.
AB - 3He neutron spin filters require a homogeneous magnetic field, otherwise the nuclear polarization of the 3He gas will easily be lost by small magnetic field gradients. Magnetic cavities with field gradients of 10-4/cm or better are often in demand, and many such cavities - Helmholtz coils, solenoids, permanent magnet circuits, etc - have been developed [1]. These magnetic cavities are designed mostly by using simulations, but the actual magnetic fields may differ from the calculations because of the presence of the environmental magnetic field as well as nearby magnetic materials. To evaluate the real magnetic fields, a precision magnetometry system with a precision of 10-5 was developed.
KW - Magnetic field
KW - Magnetometer
KW - Polarized neutron
KW - Spin exchange optical pumping
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U2 - 10.1016/j.phpro.2013.03.193
DO - 10.1016/j.phpro.2013.03.193
M3 - Conference article
AN - SCOPUS:84902260718
VL - 42
SP - 183
EP - 190
JO - Physics Procedia
JF - Physics Procedia
SN - 1875-3892
T2 - 9th International Workshop on Polarised Neutrons in Condensed Matter Investigations, PNCMI 2012
Y2 - 2 July 2012 through 5 July 2012
ER -