6th Workshop on CW and High Average Power RF

Session

Tubes & HVPS

5 May 2010, 09:30

Maxwell Auditorium (ALBA, Barcelona, Spain)

8. Correlated Measurments of HV power supply ripple and RF jitter: techniques and results

Mr James Rose (Brookhaven)

05/05/2010, 09:30

Various methods of measuring RF amplitude and phase jitter and time correlated DC power supply variations are presented. A simple setup using a 4 channel scope as a digitizer is described. Measurements of the DC power supply variations and correlated RF amplitude and phase jitter of the klystron amplifier and SRF cavity fields for the Canadian Light Source are presented and the results summarized.

14. MODIFICATION OF SEPARATOR AMPLIFIER AS A TEST STAND

Joseph Lu (TRIUMF)

05/05/2010, 10:00

In TRIUMF, the Eimac power tetrode vacuum tube 4CW100,000 (or 4CW150,000) is used in 3 amplifier systems. It is also used in Nordion, a medical isotope production company with collaboration with TRIUMF, in its TR-30 phase II amplifier system. In addition, the power tetrode 4CW50,000, which uses the same socket as 4CW100,000, is used in Nordion TR-30 phase I amplifier system. A test stand is...

16. Upgrades to the SNS MEBT RF Power Amplifiers

Mark Middendorf (ORNL)

05/05/2010, 11:00

The original SNS baseline installation included six 20kWpk vacuum tube power amplifiers (four online amplifiers and two ready spares, manually interchangeable) to drive the four rebuncher cavities that are part of the Medium Energy Beam Transport (MEBT) structure. We are in the process of replacing the six vacuum tube amplifiers with five commercially-available 25kWpk solid-state amplifiers...

17. High voltage tetrode replacement in the LHC klystron modulator

Dr Daniel Valuch (CERN)

05/05/2010, 11:30

The 400MHz/300kW LHC klystrons are powered by 58kV DC supply. The klystron cathode current is controlled by a means of "modulation anode (MA)". Variation of the MA potential between 5kV and 35kV provide klystron current regulation from zero up to the nominal 9A. A high voltage tetrode (Thomson TH5186) used in the klystron modulator allows to control the MA voltage. Many of the currently used...