2025 ALS LINAC and SHB Characterization

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

• Waveforms captured using LINAC RF MASTER as the trigger
  • Is this accessible?
• All data stored here XX
• Peak power meter MPN XX
• Scope MPN XXX, scope settings

LINAC Stability

• Disconnect SMA10B 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