Final Report of MRS/NSF Focus Groups

Cosmological Final Focus Systems

We develop the many striking parallels between the dynamics of light streams from distant galaxies and particle beams in accelerator final focus systems. Notably the deflections of light by mass clumps are identical to the kicks arising from the long-range beam-beam interactions of two counter-rotating particle beams (known as parasitic crossings). These deflections have sextupolar as well as q...

WORKSHOP “ METRIC GEOMETRY , GEOMETRIC TOPOLOGY AND GROUPS ” Final Report

A theorem of Gromov says that a complete finite volume Riemannian manifold of bounded negative curvature is the interior of a compact manifold with boundary. If, in addition, the curvature is bounded away from zero then the boundary is an aspherical manifold with virtually nilpotent fundamental group. I will discuss examples showing this is no longer true if the curvature is allowed to approach...

Focus groups.

This paper introduces focus group methodology and discusses its relevance to those researching health care provision. As a qualitative data collection technique, the focus group has advantages over other qualitative methods, such as the in-depth interview and nominal group technique. This paper highlights these advantages after providing guidelines on group composition, the management of group ...

Document Title : GIAVAP – final report final PROJECT FINAL REPORT

Expanded Studies of Linear Collider Final Focus Systems at the Final Focus Test Beam

In order to meet their luminosity goals, linear colliders operating in the center-of-mass energy range from 350 to 1,500 GeV will need to deliver beams which are as small as a few nanometers tall, with x:y aspect ratios as large as 100. The Final Focus Test Beam (FFTB) is a prototype for the final focus demanded by these colliders: its purpose is to provide demagnifications equivalent to those ...