RF Facilities Update X band order with CPI

RF Facilities Update • X band order with CPI for 2 Klystrons • Modulator price enquiry in November once CPI confirm klystron spec • Market survey will go out before end of year for Igor’s low power klystron solution

Conditioning progress of the 12 GHz klystron power source Rf pulse energy [J] vs. time at 50 Hz rep. rate Rf pulse energy [J] 18. 00 16. 00 14. 00 12. 00 10. 00 8. 00 6. 00 4. 00 2. 00 0. 00 10 MW, 1500 ns 50 Hz LCWS 11 / CAS break 2 0/ /1 1 18 01 Klystron HV conditioning, no rf. Most time needed for voltage and current calibration (not yet finished!). 2 0/ /1 1 08 01 2 9/ /0 1 28 01 2 9/ /0 1 18 01 2 9/ /0 1 08 01 2 8/ /0 1 29 01 Date Max rf power levels at 50 Hz repetition rate. 20/10/2011: 20 MW, 500 ns, 50 Hz Av. collector power [W] Average beam power into collector [W] vs. time, different rep. rates 8000 7000 6000 5000 4000 3000 2000 1000 0 0/ /1 18 1 1 20 0/ /1 08 9/ /0 28 9/ /0 18 1 1 1 20 9/ /0 08 8/ /0 29 Date

Scandinova Modulator running very well with 1 k. V on IGBT’s giving us about 360 k. V on Klystron at full pulse width and 50 Hz rep rate Continue RF conditioning of klystron and RF network When saturation is reached (expect 28 to 30 MW) will compare to SLAC power curves to confirm modulator calibration. Increase klystron to nominal voltage and finish high power conditioning hopefully before end of year Install complete RF network during shutdown to start putting RF into CTF 2 when shutdown is finished