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Development of a 3He magnetometer for a neutron electric dipole moment experiment
Ist Teil von
EPJ techniques and instrumentation, 2014-12, Vol.1 (1), Article 8
Ort / Verlag
Berlin/Heidelberg: Springer Berlin Heidelberg
Erscheinungsjahr
2014
Link zum Volltext
Quelle
Free E-Journal (出版社公開部分のみ）
Beschreibungen/Notizen
We have developed a highly sensitive
3
He magnetometer for the accurate measurement of the magnetic field in an experiment searching for an electric dipole moment of the neutron. By measuring the Larmor frequency of nuclear spin polarized
3
He atoms a sensitivity on the femto-Tesla scale can be achieved. A
3
He/Cs-test facility was established at the Institute of Physics of the Johannes Gutenberg University in Mainz to investigate the readout of
3
He free induction decay with a lamp-pumped Cs magnetometer. For this we designed and built an ultra-compact and transportable polarizer unit which polarizes
3
He gas up to 55% by metastability exchange optical pumping. The polarized
3
He was successfully transfered from the polarizer into a glass cell mounted in a magnetic shield and the
3
He free induction decay was detected by a lamp-pumped Cs magnetometer.
PACS numbers
07.55.Ge Magnetometers for magnetic field measurements; 13.40 Electric and magnetic moments; 14.20 Protons and neutrons