Abstract Radiofrequency (RF) power source during high operation of a particle accelerator often exhibit saturation nonlinearity in amplitude and phase for sinusoidal input signal. This leads to an undesirable distorted RF signal as the cavity, which is basic building block accelerator. Linearization important necessity operational improve simplify cavity control performance, addition improving efficiency. The being final element electric field loop, its linear over wider range sought....

While operation of radio frequency (RF) cavity in a particle accelerator, there is need to stabilize electric field (E) within RF by control system. In pulse mode operation, beam injected into it perturbs amplitude and phase E, commonly termed as loading disturbance problem. For this compensation, Iterative Learning Controller (ILC) algorithm using proportional integral derivative (PID) type formulation have been reported for Tesla cavity. However, better ILCs based on optimization errors...

AbstractComputational electromagnetics is used to study, design and optimize electromagnetic instruments. This paper introduces function of a magnetic instrument, namely, instrumented pipeline inspection gauge (IPIG), various computational methods useful for its analysis. Usage FEMLAB detailed understanding flux leakage (MFL) phenomenon both in 2D 3D finite element analysis (FEA) explained. It finally presents method perform an important step defect characterization IPIG by building large...

Purpose The purpose of this paper is to introduce an in line non‐destructive inspection tool instrumented pipeline gauge (IPIG) and the need for secondary sensors it; design a proper configuration eddy current based sensor under given constraints. Design/methodology/approach objective achieved by designing simple configuration, testing it experimentally modifying as per requirements. Findings An optimized arrived at set Originality/value This presents novel method sensor, especially...

In an operational accelerator, RF cavity may operate in either CW (continuous wave) or pulsed mode. Value of detuning Δω needs to be determined for tracking resonance frequency <italic xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">f_r</i> as well its tuning. However, direct sensor knowing value is not available. Model/s employed estimate from measured quantities. One carry out make a system suited secondary/inferential measurement. this...

Purpose The purpose of this paper is to describe how improve magnetic pick up sensor for detection weak field. A marker system, built using hall sensors improved by providing ferrite cores as back yoke obtain benchmarked performance with reduced number in an equipment pipeline inspection called caliper tool. Design/methodology/approach opts exploratory study making various configurations possible under given constraints, analyzing results each one them and correcting the configuration....

Behavior of Radio Frequency (RF) cavity as a dynamical system has been well explained by its state space model especially in case normal conducting cavity. In superconducting cavity, one needs to also Time Varying Detuning (TVD) additional non-linear equations. The TVD forms parameter matrix and is function number mechanical modes cavities. Often misses out or fails more these modes. Given, that designer modeled maximum possible extent, there need detect if any dynamics are unmodeled. Kalman...

In an operational accelerator, RF cavity operates in pulsed or CW mode. both cases, value of detuning needs to be determined for tuning/tracking compensate beam loading. As direct sensor/s are not available, often models employed infer estimate its from available measurements. This type measurement is termed as secondary/inferential measurement. this paper, model and estimation it discussed. Detuning estimator derived performance evaluation carried out by feeding experimental data acquired...

Noise limits set by regulatory agencies make solutions to common mode EMI a necessary consideration in the manufacture and use of electronic equipment. Common filters are generally relied upon suppress line conducted interference. These successfully reliably reduce noise. However, successful design requires foresight into non ideal character filter components - inductor particular. It is aim this paper provide designers knowledge required identify those characteristics critical desired performance.

Time Domain Electromagnetic (TDEM) methods are used for exploration of deep seated mineral deposits by measuring sub-surface conductivity the earth. The response earth is measured an induction coil. signals acquired contaminated variety noises. Signal filtering plays a major role in order to obtain deeper information regarding subsurface conductivities. Various based on conventional DSP filters, wavelets, etc. have been attempted. This paper explains short methodology Empirical mode...