Phone List for K2K Shift Workers

Only 5000 numbers can be called directly from offsite. To reach internal numbers, dial KEK switchboard at +81-(0)298-64-1171 and give the last four digit of the extension desired. This can only be done during normal business hours: 8am - 5PM JST weekdays.

See also K2K On-Call Shift & Experts List for information on contacting K2K experts.

Accelerator Control Room
• 5711 (only K2K shift leader [* on shift calendar] should call)
  N-Hall Control Room
• 5758 (control area)
• 5598 (outside line)
• 3616 (portable near terminals)
• 3612 (near conference room)
• 3610
  Target Hall
• 5761 (office)
• 3628 (office)
• 3626 (target cave)
  Muon Monitor
• 5763 (office)
• 3629 (cave)
  Neutrino Hall
• 5773 (hut)
• 3630 (pit floor)