HOM damping with coaxial dampers in a pillbox cavity without the fundamental mode frequency rejection filter
Coaxial dampers with E-probe and H-loop couplers are used to damp higher-order mode (HOM) in an 840-MHz cylindrical prototype cavity. The dampers are positioned to have minimum coupling at the fundamental frequency, f{sub 0}, without using any blocking circuit. The E-probe dampers are used at the equatorial plane of the cavity. The H-loop dampers are used in the end wall of the cavity. The fundamental mode decoupling can be done by positioning the loop plane in the direction of the H-field of the mode. For both dampers, the fundamental mode coupling can be better than {minus}50 dB. The damper load resistance is varied to find the optimum loading. Measurement is made for three cases with (1) three E-probe dampers, (2) three H-loop dampers, and (3) three E-probe and three H-loop dampers.
- Research Organization:
- Argonne National Lab., IL (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- W-31109-ENG-38
- OSTI ID:
- 10175746
- Report Number(s):
- ANL/ASD/CP-78336; CONF-930511-273; ON: DE93017695; TRN: 93:018015
- Resource Relation:
- Conference: PAC `93: international particle accelerator conference,Washington, DC (United States),17-20 May 1993; Other Information: PBD: [1993]
- Country of Publication:
- United States
- Language:
- English
Similar Records
Coaxial higher-order mode damper employing a high-pass filter
Quench propagation in the HOM damper of the 56 MHz cavity