Recent improvements on the atomic fountain clock at SIOM*
Du Yuan-Boa),b), Wei Rong†a), Dong Ri-Changa),b), Zou Fana),b), Wang Yu-Zhua)
       
(a) The physical apparatus diagram of the vacuum chamber in the Ramsey interaction region of the AFC, together with four temperature probes (lists: 1, 2, 3, 4) and twinning carbon fiber adhered to it. (b) The strength of magnetic field measured along the axial direction in the magnetic shielding cylinder after demagnetizing; the inserted figure illustrates the magnetic distribution in the Ramsey interrogation region (black square: previous value in 2005, red diamond: new result).