This paper investigates the dynamical behavior of an assembled beam like structure with tip masses modeling a two stage space rocket structure. The beam like structure is composed of two beams connected together carrying two masses at the free ends to model the payload, and the stabilizing fins mass properties. The effect of non-homogeneity of the structure due to different cross section proper...

As a first step toward testing the proposed “Möbius” scheme[1], we used existing CESR elements to collide round, rather than flat, beams. The tune shift parameter, , was inferred from the beam profiles and current, was compared to the tune shift of the coherent beam-beam mode, and was corroborated by luminosity measurement. Values of up to 0:09 were achieved without significant lifetime reduction.

the pseudo-elastic behavior of shape memory alloy (sma) truss and cantilever beam are investigated. brinson’s one-dimensional material model, which uses the twinned and detwinned martensite fractions separately as internal variables, is applied in the algorithm to establish the sma stress-strain characteristics. this material model also incorporates different young’s modulus for austenitic and ...

We demonstrate a wide-angle electron beam splitter capable of producing 1 cm beam separation at the detection plane. The beam splitter utilizes a nanofabricated periodic grating in combination with a bi-prism element. In contrast to devices utilizing only bi-prism elements, the use of the periodic grating causes amplitude, and not wavefront, splitting. Even at maximum separation, beam profiles ...

III. Outlook Using a diffraction model, we derive the longitudinal highIf the step d is not small, we must include the interference of frequency impedance of a small step-out transition for a sheet the two waves diffracted at the lower and upper edge and also beam in planar geometry. the multiple reflections. In this case, the bound~ conditions can still be satisfied in a diffraction model, nam...