Magnetic field stabilization is a crucial condition parameter for many kinds of ultra-high precision measurements such as a search for an electric dipole moment (EDM). The instability of magnetic field strength often arises from the drift of current flow in a solenoid coil to generate the magnetic field. For our EDM search experiment with maser oscillating diamagnetic 129Xe atoms, we have developed a new stabilized current source based on a feedback system which is devised to correct the amount of current flow measured precisely with high-precision digital multimeter and standard resistor. Using this new current source, we have successfully reduced the drifts of coil current by at least a factor of 100 compared to commercially available current sources.
|Journal||Journal of Physics: Conference Series|
|Issue number||SECTION 10|
|Publication status||Published - Jan 1 2011|
|Event||International Nuclear Physics Conference 2010, INPC2010 - Vancouver, BC, Canada|
Duration: Jul 4 2010 → Jul 9 2010
ASJC Scopus subject areas
- Physics and Astronomy(all)