TY - JOUR
T1 - Development of the measurement system for the search of an electric dipole moment of the electron with laser-cooled francium atoms
AU - Inoue, T.
AU - Ando, S.
AU - Aoki, T.
AU - Arikawa, H.
AU - Ezure, S.
AU - Harada, K.
AU - Hayamizu, T.
AU - Ishikawa, T.
AU - Itoh, M.
AU - Kato, K.
AU - Kato, T.
AU - Kawamura, H.
AU - Nataraj, H. S.
AU - Sato, T.
AU - Uchiyama, A.
AU - Aoki, T.
AU - Furukawa, T.
AU - Hatakeyama, A.
AU - Hatanaka, K.
AU - Imai, K.
AU - Murakami, T.
AU - Shimizu, Y.
AU - Wakasa, T.
AU - Yoshida, H. P.
AU - Sakemi, Y.
PY - 2014
Y1 - 2014
N2 - We plan to measure the permanent electric dipole moment (EDM) of the electron, which has the sensitivity to the CP violation in theories beyond the standard model by using the laser-cooled francium (Fr) atom. This paper reports the present status of the EDM measurement system. A high voltage application system was constructed in order to produce the strong electric field (100 kV/cm) needed for the experiment. After conditioning, the leakage current was 10 pA when a high voltage of 43 kV was applied. Also, a drift of an environmental field was measured at the planned location of the Fr-EDM experiment. The drift is suppressed at present down to the level of 10 pT by installing a 4-layermagnetic shield. Improvements are still needed to reach the required field stability of 1 fT.
AB - We plan to measure the permanent electric dipole moment (EDM) of the electron, which has the sensitivity to the CP violation in theories beyond the standard model by using the laser-cooled francium (Fr) atom. This paper reports the present status of the EDM measurement system. A high voltage application system was constructed in order to produce the strong electric field (100 kV/cm) needed for the experiment. After conditioning, the leakage current was 10 pA when a high voltage of 43 kV was applied. Also, a drift of an environmental field was measured at the planned location of the Fr-EDM experiment. The drift is suppressed at present down to the level of 10 pT by installing a 4-layermagnetic shield. Improvements are still needed to reach the required field stability of 1 fT.
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U2 - 10.1051/epjconf/20146605008
DO - 10.1051/epjconf/20146605008
M3 - Conference article
AN - SCOPUS:84898715670
SN - 2101-6275
VL - 66
JO - EPJ Web of Conferences
JF - EPJ Web of Conferences
M1 - 05008
T2 - 2013 International Nuclear Physics Conference, INPC 2013
Y2 - 2 June 2013 through 7 June 2013
ER -