I-Future damping rings for linear colliders will need to have very small vertical equilibrium emittances. In the limit of low beam current, the vertical emittance is primarily determined by the vertical dispersion and the beta-tron coupling. In this paper, the contributions to these effects from random misalignments are calculated and tolerances are derived to limit the vertical emittance with ...

1 The evaluation of longitudinal dispersion in aquatic canopies is necessary to predict the behavior 2 of dissolved species and suspended particles in marsh and wetland systems. Here we consider the 3 influence of canopy morphology on longitudinal dispersion, focusing on transport before 4 constituents have mixed over depth. Velocity and longitudinal dispersion were measured in a 5 model canopy...

Choi, Jun M. Ph.D., Purdue University, May 2015. Near-inertial internal Poincaré waves in Lake Michigan: Seasonal variability and effects on lateral dispersion and turbulent mixing. Major Professor: Cary D. Troy. A dominant physical process in stratified Lake Michigan is near-inertial internal Poincaré waves. The near-inertial internal Poincaré waves is described as locally quasi-uniform curren...

We demonstrate adjustable negative chirp from a directly-modulated, injection-locked 1.55-μm VCSEL by controlling the injection parameters. Chromatic dispersion tolerance is enhanced by greater than 10X at 10-Gb/s compared to that of a free-running VCSELs. ©2008 Optical Society of America OCIS codes: (230.2035) Dispersion compensation devices, (250.7260) Vertical cavity surface emitting lasers

The strong demagnification inherent in final focus systems requires local cancellation of the resulting chromaticity. Strong sextupole pairs separated by a -I transform are positioned x12 in betatron phase away from the Interaction Point (IP) in order to cancel chromatic aberrations primarily due to the final quadrupoles. Sextupole alignment is critical in order to provide orthogonal tuning of ...

In a previous paper (Olling 1995, AJ, 110, 591) a method was developed to determine the shapes of dark matter halos of spiral galaxies from an accurate determination of the rotation curve, the flaring of the gas layer and the velocity dispersion in the H I . Here this method is applied to the almost edge-on Scd galaxy NGC 4244 for which the necessary parameters are determined in the accompanyin...

In order to generate a data base for the numerical study of dispersion processes in a well defined heterogeneous porous medium, a laboratory tank of 14 m in length, 0.5 m in height and 0.13 m in width has been constructed, which is composed of 81 different elements of exactly known geometry and hydraulic properties. In dispersion experiments using salt as tracer, breakthrough curves are observe...

Rainwater streaking down a vertical wall exhibited the characteristics of “fingered flow.” The wall serves as an analogy to film flow in a relatively smooth and wide aperture fracture. A digital photograph of the wall suggests that the vertical distribution of water is heavy-tailed. A fractional-order advection-dispersion equation is used as a model.