Author/Authors :
Serebrov، نويسنده , , A.P. and Geltenbort، نويسنده , , P. and Shoka، نويسنده , , I.V. and Shmelev، نويسنده , , G.E. and Kharitonov، نويسنده , , A.G. and Vassiliev، نويسنده , , A.V. and Krasnoshekova، نويسنده , , I.A. and Lasakov، نويسنده , , M.S. and Siber، نويسنده , , E.V. and Fomin، نويسنده , , A.K. and Zimmer، نويسنده , , O.، نويسنده ,
Abstract :
A PNPI/ILL experiment to measure the neutron electric dipole moment (EDM) is currently being prepared at the facility PF2 for ultracold neutrons (UCN) at the Institut Laue-Langevin in Grenoble. To enable an improvement of sensitivity, one of PF2ʹs beam positions has been equipped with new components for UCN transport, polarization and beam characterization, comprised of a superconducting solenoid-polarizer with magnetic field 4 T, a neutron guide system with diameter 136 mm prepared in replica technology, and a novel beam chopper for time-of-flight analysis. The whole EDM apparatus is set up on a non-magnetic platform. The total flux of polarized UCN with velocities less than 6.8 m/s along the guide axis is 1.5×105 n/s, corresponding to a flux density of 103 cm−2 s−1. The density of polarized UCN at the experimental position is about 5 cm−3, which shall lead to an EDM measurement with a counting statistical accuracy of 1.5×10−26 ecm during 200 days of operation at PF2.
