Münster 2002 – scientific programme
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HK: Physik der Hadronen und Kerne
HK 10: Poster Session: Nuclear Physics/Spectroscopy
HK 10.23: Poster
Tuesday, March 12, 2002, 10:30–12:45, Foyer Chemie
A 3He Magnetometer to Improve the Sensitivity of the Detection of an Electric Dipole Moment of the Neutron — •S. Baeßler1, W. Heil1, Y. Borisov2, V. Lobashev2, W. Kilian3, H. Rinneberg3, P. Seifert3, and Y. Sobolev3 — 1Institut für Physik, Mainz, Germany — 2PNPI Gatchina, Russia — 3PTB Berlin, Germany
In the near future new powerful sources of ultracold neutrons (UCN) will be available. They enable us to improve the sensitivity of experiments searching for a (static) electric dipole moment of the neutron (EDM) to be about several 10−28 e·cm. The main sources of systematic uncertainties are temporal and spatial fluctuations of the magnetic field which could be correlated with the electrical field and produce an apparent EDM. A precondition for the above mentioned EDM experiment is a magnetometer capable of recording and corrrecting for the magnetic field false effect precisely.
A prototype of a 3He magnetometer will be decribed. If its output signal is integrated over periods of about 100 seconds, this is a typical UCN storage time, the magnetometer is capable of recording magnetic field fluctuations in the order of several fT in an EDM appartus corresponding to an uncertainty of the EDM in the above mentioned range.