First Operational Experience with DORIS II
DORIS II is a completely new designed e+-e- storage ring with a mini-beta scheme. After first runs with a 8 cm optic, the vertical amplitude functions in the interaction points were reduced to 4 cm. This yielded luminosities of L = 1.5 . l031 cm-2sec-1 with 2 × 27 mA at E = 5 GeV. Because of the short injection time, an integrated luminosity of more than 600 nb-1 per day has been obtained.
Modern and future colliders
Since the initial development of charged particle colliders in the middle of the 20th century, these advanced scientific instruments have been at the forefront of scientific discoveries in high energy physics. Collider accelerator technology and beam physics have progressed immensely and modern facilities now operate at energies and luminosities many orders of magnitude greater than the pioneering colliders of the early 1960s. In addition, the field of colliders remains extremely dynamic and continues to develop many innovative approaches. Indeed, several novel concepts are currently being considered for designing and constructing even more powerful future colliders. In this paper, we first review the colliding beam method and the history of colliders, and then present the major achievements of operational machines and the key features of near-term collider projects that are currently under development. We conclude with an analysis of numerous proposals and studies for far-future colliders. The evaluation of their respective potentials reveals tantalizing prospects for further significant breakthroughs in the collider field.
Gender Politics and Research: Male and Female Violence in Intimate Relationships
This article reviews a wide range of research reports on male and female violence in intimate relationships and highlights the political nature of domestic violence research. The authors review incidence and prevalence-based research that uses quantitative surveys and illustrate how quantitative, family-focussed researchers tend to ignore the political and social context of domestic violence and the complex issues of gender and power. The authors argue that understanding the complexities of domestic violence requires clear definitions of what constitutes domestic violence and multi-method approaches to research, using a combination of quantitative and qualitative methodologies.