Title :
Study on Field Measurement and Ground Vibration for Superconducting Solenoid of New g-2 Experiment at J-PARC
Author :
Sasaki, Ken-Ichi ; Iinuma, Hiromi ; Kimura, Nobuhiro ; Ogitsu, Toru ; Yamamoto, Akira ; Nakayama, Hisayoshi ; Mibe, Tsutomu ; Saito, Naohito ; Obata, Takayuki
Author_Institution :
High Energy Accel. Res. Organ. (KEK), Tsukuba, Japan
fDate :
6/1/2011 12:00:00 AM
Abstract :
Basic R&Ds of a superconducting solenoid for a new g-2 experiment at J-PARC are on going. High uniformity of magnetic field below 0.1 ppm is required for the g-2 experiment within a storage region of 33.3±5 cm in radius and ±10 cm in height. Two R&Ds have been started to develop the magnet with such high uniformity; a development of a precise field monitoring system and a study of seismic ground vibration. The prototype monitoring system using continuous wave type NMR probe for horizontal MRI solenoid has been built and tested. Cross-check between NMR and Hall probe has been also carried out. The seismic ground vibration has been measured at Materials and Life science Facility, MLF, in J-PARC. Based on the measured results, the spectrum analysis of the iron yoke has been performed using ANSYS.
Keywords :
magnetic fields; magnetic moments; muons; proton accelerators; solenoids; superconducting magnets; ANSYS; Hall probe; J-PARC; continuous wave type NMR probe; g-2 experiment; horizontal MRI solenoid; iron yoke; magnetic field; prototype monitoring system; seismic ground vibration; spectrum analysis; superconducting solenoid; Magnetic resonance imaging; Mesons; Nuclear magnetic resonance; Probes; Solenoids; Superconducting magnets; Vibrations; Anomalous magnetic moment; NMR probe; hall probe; seismic ground vibration; superconducting solenoid;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2010.2088096
