In an electron beam sustained discharge Xenon laser the discharge energy deposition has been varied in order to investigate the saturation effect on the Xenon laser. The current density of the electron beam is varied separately in the range of 0.1-2.7 A/cmz to obtain optimized discharge excitation conditions as a function of electron beam current density and gas pressure. An optimal fractional ...

High intensity operation as planned for the synchrotron SIS100 is expected to lead to ion bunch oscillations in longitudinal phase space that must actively be damped [1]. Therefore a longitudinal feedback system has to be designed that is faster than Landau damping and copes with the expected growth rates of instabilities. One task of this feedback system is the damping of quadrupole oscillatio...

Propagation of optical beams in nonlinear media NLM has been a subject of continuing interest for more than 4 decades due to the possibility for creation of reconfigurable waveguides through the intensity-dependent refractive index change 1,2 . Such optically induced waveguides can guide weak signal beams and pulses 3,4 , which motivates the investigation of novel techniques for manipulation of...

We derive an estimate for the minimal period of autonomous strongly damped hyperbolic problems. Our result corresponds to works by Yorke [13] , Busenberg et al. [2] ordinary differential equations as well Robinson and Vidal-Lopez [10] [11] parabolic A general approach is developed treating both An example application a class beam provided.

In this paper, the modelling and design of a multivariable controller for a smart thick composite cantilever beam with embedded shear sensors and actuators is investigated. The first 3 dominant vibratory modes are retained in the modelling of the composite beam. The beam is divided into 8 finite elements and shear piezoelectric patches are embedded into the master structure. These shear piezoel...