phase measurements for booster rf n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
Phase Measurements For Booster RF PowerPoint Presentation
Download Presentation
Phase Measurements For Booster RF

Loading in 2 Seconds...

play fullscreen
1 / 10

Phase Measurements For Booster RF

4 Vues Download Presentation
Télécharger la présentation

Phase Measurements For Booster RF

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. Phase Measurements For Booster RF Victor Grzelak Accelerator Division RF

  2. Phase Measurements For Booster RF Alignment measurements Fermi AD/RF

  3. Phase Measurements For Booster RF Changes Fermi AD/RF

  4. Phase Measurements For Booster RF Measurements Equipment • Synth Setup: • HP8657B Synthesizer>HP11549A R Splitter>(2)8nS Phase matched cables>A and B inputs of ENI • VVM Setup: • HPH508A VVM>(2)8nS cables • Directional couplers • At least 4 (Anode and cathode on 2 cavities) • Arbitrary waveform generator • APG,SSD,Trig1, Trig2 • DC Voltage supply 0 to +10 Fermi AD/RF

  5. Phase Measurements For Booster RF Measurements setup • Turn all RF off (Victor) • Replace APG,SSD, Trig1 and Trig2 with ARB (Victor & John) • Replace FBS curve with DC voltage supply • Replace A/B input to ENI with fixed frequency synthesizer • 37.8, 45 and 52.808MHz • Verify with Bill location of directional couplers going to B:FOPAB • Create 5 second pulse on Arb • Measure output of the brass box, and input to the SSD with VVM Fermi AD/RF

  6. Phase Measurements For Booster RF Tunnel Measurements • Add Directional Coupler to Cathode monitor and Anode monitor on both PAs. Terminate Anode to 50 Ohms and connect cathode to VVM of adjacent stations (Group 1) • Turn on RF • Tune up for minimized PD error • Measure cathode to cathode phase • Measure DS gap to DS gap phase • (Upstairs) Measure RCC rack at input to FB Chassis Fermi AD/RF

  7. Phase Measurements For Booster RF Logistics • 2 VVM carts one upstairs one downstairs • Group 1 measure Brassbox and SSD input for everything upstairs • Group 2 connects directional couplers to downstairs • Group 3 is Victor and John. Who will setup all of the waveforms and the frequency synthesizer • Communication will be done with tunnel phones downstairs and walkie talkies upstairs • Each measurement should be done at all 5 locations at 3 frequencies. • This would likely take a day long shutdown Fermi AD/RF

  8. Phase Measurements For Booster RF Measurements Fermi AD/RF

  9. Phase Measurements For Booster RF Additional Measurements Powered Measurement • Period to Period with 32nS cables • Must phase match cables and verify this would be the proper length Unpowered measurement • Synthesizer in tunnel and measure gap and cathode cabling to upstairs • Gap phasing should be calibrated with magnitude included in measurements • Cathode phasing with VVM and NA S11 Fermi AD/RF

  10. Phase Measurements For Booster RF Other thoughts 1.312 (Zero) 1.965 (Current) Fermi AD/RF