Magnetic/Electric Fields for Magnetic/Electric Fields for KEK-RCNP EDM Experiment KEK-RCNP EDM Experiment K. Matsuta K. Matsuta (Osaka) (Osaka) , Y. Masuda , Y. Masuda (KEK) (KEK) , Y. Watanabe , Y. Watanabe (KEK) (KEK) , , S.C. Jeong S.C. Jeong (KEK) (KEK) , K. Hatanaka , K. Hatanaka (RCNP) (RCNP) , R. Matsumiya , R. Matsumiya (RCNP) (RCNP) , , S. Kawasaki S. Kawasaki (KEK) (KEK) , M. Mihara , M. Mihara (Osaka) (Osaka) , A. Miller , A. Miller (TRIUMF) (TRIUMF) , , C. Bidinosti C. Bidinosti (Winnipeg) (Winnipeg) , Y. Shin , Y. Shin (TRIUMF (TRIUMF ) ) and other KEK and other KEK RCNP members RCNP members UCN source @RCNP ρ = 26 UCN/cm3 @ E C = 90 neV
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Magnetic/Electric Fields for KEK-RCNP EDM Experiment K. Matsuta(Osaka), Y. Masuda(KEK), Y. Watanabe(KEK), S.C. Jeong(KEK), K. Hatanaka(RCNP), R. Matsumiya.
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Magnetic/Electric Fields for KEK-Magnetic/Electric Fields for KEK-RCNP EDM ExperimentRCNP EDM Experiment
K. MatsutaK. Matsuta(Osaka)(Osaka) , Y. Masuda , Y. Masuda(KEK)(KEK), Y. Watanabe, Y. Watanabe(KEK)(KEK), , S.C. JeongS.C. Jeong(KEK)(KEK), K. Hatanaka, K. Hatanaka(RCNP)(RCNP), R. Matsumiya , R. Matsumiya (RCNP)(RCNP), , S. KawasakiS. Kawasaki(KEK)(KEK), M. Mihara, M. Mihara(Osaka)(Osaka), A. Miller, A. Miller(TRIUMF)(TRIUMF), , C. BidinostiC. Bidinosti(Winnipeg)(Winnipeg), Y. Shin, Y. Shin(TRIUMF(TRIUMF )) and other KEK-RCNP and other KEK-RCNP membersmembers
UCN source @RCNP
ρ = 26 UCN/cm3@ EC = 90 neV
E10 kV/cm
Ho
1 μT
n spin s1st RF pulseγH1t = π/2
Principle of EDM measurementPrinciple of EDM measurement
(ω-ωo)tc
E reversal for extraction of dn
RF frequency ω
Pnco
s(ω
-ωo)t
c
UCN bottle
ωo: 2μnHo ± 2dnE tc: precession time
δdsta = h/{2PnEtc√N}Pn : UCN polarizationN : number of UCN
nEDM
E10 kV/cm
Ho
1 μT
n spin s1st RF pulseγH1t = π/2
Principle of EDM measurementPrinciple of EDM measurement
(ω-ωo)tc
E reversal for extraction of dn
RF frequency ω
Pnco
s(ω
-ωo)t
c
UCN bottle
ωo: 2μnHo ± 2dnE tc: precession time
δdsta = h/{2PnEtc√N}Pn : UCN polarizationN : number of UCN
nEDM
Systematic errors at ILL
×10-27 e.cm1 Door cavity dipole -5.6 ±2.02 Other dipole fields 0.0 ±6.03 Quadrupole difference -1.3 ±2.0