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  1. RF power levels and waveforms of all signals provided at cable output in the racks
  2. Amplitude and phase stability of the S-band RF at the output of the LINAC (Accelerating Section 2)

RF Power Levels

  • All data stored here
  • Time estimate - request 4 hrs for margin
    • Peak power measurements: 0.5 hr
    • Scope measurement:
      • Validate trigger: 0.5 hr
      • Waveform alignment: 0.5 hr
      • Take data, moving cart with scope around, capturing overlays: 1 hr
        • TODO: add desired timing overlay captures
    • Restore all cables and confirm normal operation
  • TODO: confirm all cables installed; has cable 107 been replaced?
EquipmentMPNSerialCalibration and Settings
Peak RF Power Meter


High Speed Scope

  • LINAC RF MASTER as the trigger
    • Is this accessible?


SignalCablePeak RF PowerWaveform
AS1 Load FWD103

S Band Buncher FWD100

AS1 FWD102

AS1 REV101

KLY1 FWD108

KLY1 REV109

AS2 Load FWD107

S Band Buncher REV104

AS2 FWD106

AS2 REV105

Kly2 FWD112

Kly2 REV113

LINAC Stability

  • Disconnect SMA100B MO output
  • Replace with FSWP Reference output
  • Use LMX1214 frequency divider to divide the 2,997.8 MHz signal back to 499.634 MHz MO reference
  • Measure phase and amplitude additive noise
  • Time estimate: 3 hr
    • Disconnect MO and confirm nominal operation with FSWP output as MO: 15 min
    • Confirm pulsed RF signal on high speed scope: 30 min
    • Measure additive and absolute amplitude and phase noise: 1 hr
    • Restore all connections and confirm nominal operation: 30 min
  • TODO:
    • Lay down required cable runs and check losses
    • Setup measurement infrastructure, power supply, cart, etc
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