The fundamental knowledge contained in the previous paper on “Cavity control system essential modeling for TESLA linear accelerator and free electron laser” is applied for Matlabs’ Simulink implementation of the basic models for the cavity resonator. Elementary simulations of the cavity behavior are carried out and some experimental results for signals and power considerations are presented.

We present a progress report on a program to develop a high–power second harmonic magnicon amplifier at 11.4 GHz for linear accelerator applications. The experiments are being carried out on the NRL Long–Pulse Accelerator Facility using a plasma cathode to create the electron beam. Typical beam parameters are 500–700 kV, 170–250 A, 5.5 mm diameter, with a ~300 nsec voltage flattop. The accelera...

~-RF power is usually transmitted into ,an accelerator section from a rectangular waveguide through a single coupling iris. This arrangement introduces phase and amplitude asymmetries into the coupler fields with which the beam interacts. Field distortion can be reduced by machining an offset into the cavity wall opposite the iris. However, the compensation is imperfect. In this paper we descri...

The cavity of a particular electron accelerator is analysed thanks to boundary integral equations. Electrons are accelerated several times in the median plane of a single coaxial cavity resonating on its fundamental TEMj mode. The geometry of the conductors is modified to improve the shunt impedance. The proper frequency of the new resonator is calculated thanks to Green's function associated t...

The industrial electron accelerator named FANTRON-I whose merits are its low fabrication cost, high reliability and easy maintainability is under development at Physico technology laboratory, KAPRA (Korea Accelerator and Plasma Research Association). To make the simplified machine, it is required to optimise the beam energy gain and beam transport efficiency. The beam energy gain is dependent o...

An overmoded photonic crystal resonant cavity with two dimensional dielectric lattice structures is proposed and simulated. The dominant mode is a higher-order TM03-like at the frequency of 31.14 GHz, the fundamental mode and most other modes are not supported by the cavity. The structure would be potential for application in accelerator, gyrotron and klystron in Ka-band. DOI: 10.2529/PIERS0610...

W-MAST (Wakasa-wan Energy Research Center Multipurpose Accelerator with Synchrotron and Tandem) consists of a tandem accelerator with 5MV terminal voltage and a compact ion synchrotron. The beam commissioning was started at the beginning of 1999 and was successfully accomplished in March 2000. A proton beam of 10MeV was injected from the tandem accelerator and accelerated by the ion synchrotron...

During the past few years, a demonstration that a free electron laser driven by an induction accelerator can furnish an intense bunched beam for use in a two-beam accelerator has been performed at CESTA. Earlier work, which concentrated on observing bunching by optical means, and the more recent production of R-F power obtained by passing the bunched beam through a standing-wave output cavity w...

The acceleration efficiency of a laser driven linear accelerator is analyzed. The laser power, loss factor and impedances determine the maximum charge that can be accelerated and the efficiency of that acceleration. The accelerator structure can be incorporated into a laser cavity. The equation for the resultant laser pulse is derived and analyzed. A specific example is presented, and the stead...

High radio-frequency (rf) losses measured for cavities in original Continuous Electron Beam Accelerator Facility (CEBAF) cryomodules, compared to the single-cavity tests, have been a long-standing issue related their performance. We summarize experimental evidence of increased rf CEBAF arising from fundamental power coupler cold window and waveguide, respectively. Cryogenic tests were done on t...