DRAFT: Troubleshooting E-Beam Gun Controllers & Vacuum Drops in PVD
A practical guide on diagnosing sudden pressure spikes, filament issues, and maintaining planetary gears in Class 10000 cleanrooms.
Draft
Operating Physical Vapor Deposition (PVD) systems like the TecPort Symphony 9 or Vaksis Midas requires continuous monitoring of high-vacuum conditions and deposition rates.
1. Vacuum Pressure Spikes During E-Beam Evaporation
When firing an E-beam gun (e.g., Ferrotec units), sudden pressure drops or micro-arcs usually indicate outgassing from the evaporant material or contaminated sweep pockets.
- Check the Filament: Inspect for physical warping or uneven thinning.
- Hearth Sweeping: Ensure the beam sweep pattern isn’t hitting the crucible walls.
2. Ion Beam Source Maintenance
If you are running Ion Beam Assisted Deposition (IBAD) using KRI sources, ensure the gas manifolds (Argon/Oxygen lines) maintain stable flow rates to avoid plasma extinction mid-run.