A single overmoded sized window is being considered for use on the SLAC 75 MW X-Band Klystron. The 65 mm diameter window operates in the circular TE01 mode in the reduced field, traveling wave configuration. Double step transitions were designed using MLEGO modematching program to suppress conversion to TE02. This compact design has a maximum peak rf electric field of 3.4 MV/meter at 75 MW. Des...

A prototype rf power source based on the Relativistic Klystron Two-Beam Accelerator (RK-TBA) concept is being constructed at the Lawrence Berkeley National Laboratory to study physics, engineering, and costing issues. The prototype, called the RTA, is described and compared to a full scale design appropriate for driving the Next Linear Collider (NLC). Specific details of the induction core test...

The Advanced Photon Source (APS) is a 7-GeV full energy positron storage ring for generating synchrotron radiation with an injector. The booster synchrotron rf system consists of a single 1-MW klystron which drives four five-cell cavities at 352 MHz. The storage ring cavities consist of four groups of four single cells powered by two 1-MW klystrons for 100-mA operation. An overview of the opera...

In this Letter, we report for the first time on the experimental observation of the generalized synchronization regime in the microwave electronic systems, namely, in the multicavity klystron generators. A new approach devoted to the generalized synchronization detection has been developed. The experimental observations are in the excellent agreement with the results of numerical simulation. Th...

Opening switches have substantial advantages over crowbars. Diversified Technologies has developed solid-state opening-switches using series arrays of IGBTs; many systems have been delivered. The control circuitry has been improved, and the current capability of low-cost switches has been increased from 5 to 25 A. The opening switch being developed will be part of a complete klystron power-supp...