1. BEPCII RF POWER SYSTEM RF group, IHEP

2. 2004 Sep ~ 2005. April 1.The 1 st transmitter had finished installing,commissioning and SAT (Site Acceptance Test). 2.The 1 st circulator had finished installing and commissioning. 3.The equipments and components for the 2 nd transmitter had been prepared in IHEP.

3. 2005.July ~ 2005. Nov. East Hall reconstruction for 2 nd. Power Sys Setting up Cooling Water, Cooling Air and Electricity

4. 2005.7 th. Nov ~ 2006. 23th. Jan Installation and commissioning in East Hall for the 2 nd transmitter.

5. Positioning

6. Installation

7. Commissioning

8. Some problems 1. Some certain signals always tripped because of something wrong in the isolation transformer. We replaced the isolation transformer with a new one. 2. During 50 hours 250kW high power test, after first 24 hours, we had a electricity shut-down. Transmitter was OK and restarted very soon.

9. Satisfied Result Frequency ： 499.8MHz @Bandwidth : +/- 1MHz Pout≥ 250kW η≥60% RF Gain ： Gain ≥ 40dB @ 250kW Harmonic: （ 499.8MHz×2 ）： -39.66dB （ 499.8MHz×3 ）： -61.17dB At 250kW, output power is stabling between － 0.001dB and 0.002dB ， phase stabling between － 0.2 0 and 0.02 0 。

10. Rf output versus Gain

11. Rf output versus phase

12. Frequency versus Bandwidth

13. 50 Hours 250kW on load Test Commission Succeed

14. 2006.17 th. April ~2006.20 th. April The 2 nd Circulator installing and commissioning.

15. Commissioning

16. The result diagram: Return Loss vs. Sliding short position

17. 2006 1 rd. Mar ~ 2006 25 th Mar West hall wave guide installed and loaded 150kW for 1 month to be prepared for Coupler high power test

18. 2006 26 th. Mar ~ 2006 25 th. Apr 1.Transmitter EPICS ICS extension 2.Interlock system for SCC 3.Operation mode for m1: Operation m2: Coupler high power test m3: SCC high power test

19. Test Plan 29 th. April 2006 conditioning in Mode2 10 th. May 2006 conditioning in Mode3 June 2006 moving into tunnel and test again

20. Coupler high power test Signals for mode2 has been connected to IOC computer and interlock system. Signals concerning water, air, temperature, arc, input power, reflected power, person safe. Ready for high power test for coupler.

21. Control station EPICS (VME, LINUX, VXWORK) FPGA interlock sys. And mode switch.

22. Signal Relays Locker All hardware signal relays here.

23. Signal list

24. Int. ARC detector ARC for coupler high power test outside Test Room

25. Int. Air for coupler Air cooling for coupler high power test

26. Int Water for coupler Water cooling for coupler Water in T Water out T Flow Pressure Conductivity

27. Int. Vac Cavity VAC. Nitrogen Shield VAC Coupler VAC

28. Int. Temp. for coupler PT100 –25C ~ 125C Window up interlock Window down interlock Doorknob interlock Doorknob up interlock Doorknob down interlock

29. Scc monitor

30. Cooling monitor

31. Interlock pannel

32. Thanks!