A 1.7 GHz waveguide schottky detector system

A 1.7 GHz waveguide Schottky detector system has been designed and built for each of the Fermilab Tevatron and recycler accelerators. The waveguide detector is designed to measure the betatron sideband and longitudinal Schottky signals of the accelerators at a frequency high enough to avoid coherent effects. Two detectors are used for each machine, one for horizontal and one for vertical betatron signals. Each detector is bi-directional providing both proton and antiproton signals. This paper describes the details of the waveguide design and construction as well as the design of the electronic system of the detector. Sensitivity calculations and bandwidth models are included. The electronic system utilizes down conversion to frequencies less than 10 MHz, so that the signals may be analyzed by standard instrumentation, such as a vector signal analyzer. The electronic system includes electronic gates to measure single or multiple bunches of protons or antiprotons with the RF as a source for tracking up and down energy ramps. The electronic system also includes a continuous beam emittance monitor