SNS Klystron Output DistortionSNS Klystron Output...
Transcript of SNS Klystron Output DistortionSNS Klystron Output...
SNS Klystron Output DistortionSNS Klystron Output Distortion
THP099
M. McCarthy, M. Crofford, S. Kim
Managed by UT-Battellefor the Department of Energy
10-2-08
Ci l t
SNS SCL RF ArchitectureCirculator
Water
Directional Coupler
Load
To Cavity
Klystrons
2 Managed by UT-Battellefor the Department of Energy Presentation_name
Initial Klystron Fwd and Cavity Fwd Waveforms
Power Measured ~ 10us from end of
Open Loop
10us from end of pulse
cavity filling
Closed Loop Note different slopes on p
maintaining cavity field
peither side of the circulator
3 Managed by UT-Battellefor the Department of Energy Presentation_name
Waveguide Circulator and Modified Directional Coupler
FWDRFL
Phase
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PhaseVariable attenuator
RF Pulse Spectrum: Normal & Parabolic
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23b Cavity input full power normal bias
23b Cavity input full power parabolic shape
TCU bias adjustment using slope matching programslope matching program
Klystron Output
Klystron Output and Cavity Input after circulator bias coil current adjustment
Cavity Input
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Cavity Input