Cavity / Component Damage

  1. Cavities
    a. Leaking Air-Vacuum Braze Joints
        1) Voids in Braze Joint.
        2) Repaired In-Situ With Manual Silver Braze
    b. Leaking Cooling Water Tubes
        1) Initially Damaged During Cavity Fabrication
        2) Repaired In-Situ With Manual Torch Braze
  2. Input Couplers
    a. Synchrotron Radiation Induced Window Damage
        1) Replaced Damaged Couplers
        2) Added Supplemental Lead Shielding
    b. Waveguide Alignment Induced Window Damage
        1) Replaced Damaged Coupler
        2) Realigned Waveguide With Waveguide Tools As Necessary
    c. Contact Ring-Copper Conductor Damage
        1) Replaced Damaged Coupler
        2) Check Contact Rings as a Maintenance Item
    d. Pinhole Ceramic Leaks
    e. Ceramic Braze Joint Leaks
  3. Cavity Tuners
    a. Misaligned Tuner Piston Damage
        1) Reworked Original Tuners
        2) Redesigned and Fabricated New Tuners
    b. Broken Piston Contact Fingers
        1) Replace Fingers as a Maintenance Item
        2) Developing New Finger Materials/Designs
    c. Tuner Drive Screw Seizing
        1) Radiation Resistant Grease
        2) Regrease as a Maintenance Item