[17p-K209-1~9] 1.5 Instrumentation, measurement and Metrology

2:30 PM - 2:45 PM JST(5:30 AM - 5:45 AM UTC)

[17p-K209-5] Present status and issues on the redefinition of the second: Discussions on the CCTF

〇Masami Yasuda¹, Tetsuya Ido² (1.NMIJ, AIST, 2.NICT)

Keywords:

redefinition of the second

Consultative Committee for Time and Frequency (CCTF) under the International Committee of Weights and Measures (CIPM) is actively discussing the redefinition of the second. Among them, we report in particular the discussion on the options of the redefinition of the second and the status of achievement of the mandatory conditions for the redefinition of the second.