RF Window for the B-cell Cavity
Operation of RF cavities in high current storage rings requires RF vacuum windows capable of CW operation at power levels of several hundred kW. Waveguide windows manufactured by Thomson Tubes for operation up to 500 kW CW traveling wave are used in the superconducting RF cryomodules of Cornell storage ring.
A schematic of the Thomson waveguide window is shown
here. It is a "warm" window, maintained at room temperature during operation. It operates at 500 MHz with a standard WR1800 flange at one end and reduced height at the other. The vacuum barrier is a 25 cm diameter, 1.7 cm thick alumina disk with matching posts on both the air and vacuum side.
References
- M. Pisharody, et al. High Power Window Tests on a 500 MHz Planar Waveguide Window for the CESR Upgrade. In Proceedings of the 1995 Particle Accelerator Conference, 1720-1722.
- E. Chojnacki, et al. Design of a High Average Power Waveguide Window. In Proceedings of the 1997 Particle Accelerator Conference.
- E. Chojnacki, et al. Tests and Designs of High-power Waveguide Vacuum Window at Cornell. Particle Accelerators, 61 [309-319]/45-55 (1998).
