Evaluation of the Beam Coupling Impedance of New Beam Screen Designs for the LHC Injection Kicker Magnets

During the 2011 run of the LHC there was a significant measured temperature increase in the LHC Injection Kicker Magnets (MKI) during operation with 50ns bunch spacing. This was due to increased beam-induced heating of the magnet due to beam impedance. Due to concerns about future heating with the increased total intensity to nominal and ultimate luminosities a review of the impedance reduction techniques within the magnet was required. A number of new beam screen designs are proposed and their impedance evaluated. Heating estimates are also given with a particular attention paid to future intensity upgrades to ultimate parameters

REFLECTIONS ON THE DEATH PENALTY AND CATHOLIC SOCIAL TEACHING

Catholic social teaching has a great deal to guide us on the topic of the death penalty. especially with respect to the inherent dignity of the human person. The death penalty remains a staple of the American criminal justice system.for a majority ofthefifiy slates and.federal government, hut public sentiment is becoming increasingly skeptical about its ultimate effectiveness. In thefollmrinx I revinv that part of Catholic social teaching that speaks to the death penalty and I reflect on the struggle to abolish the death penalty

Coaxial Wire Measurements of Ferrite Kicker Magnets

Fast kicker magnets are used to inject beam into and eject beam out of the CERN accelerator rings. These kickers are generally transmission line type magnets with a rectangular shaped aperture through which the beam passes. Unless special precautions are taken the impedance of the yoke can provoke significant beam induced heating, especially for high intensities. In addition the impedance may contribute to beam instabilities. The results of longitudinal and transverse impedance measurements, for various kicker magnets, are presented and compared with analytical calculations: in addition predictions from a numerical analysis are discussed

What Makes a Homepage Effective – AALS 2014 Presentation

As the approach to website development is constantly evolving to accommodate the latest technology, what are the best practices in law school home page design? Speakers will include Roger Skalbeck, author of the annual Top 10 Law School Home Pages ranking, who will explain the methodology, analysis and trends related to the study, and Steven Barnes, who will share the award-winning approach used at Penn Law to earn accolades from key constituencies, tie for #1 in “The Top 10 Home Pages” and earn a 2013 Webby People’s Voice Award

Phase-field simulations of viscous fingering in shear-thinning fluids

A phase-field model for the Hele-Shaw flow of non-Newtonian fluids is developed. It extends a previous model for Newtonian fluids to a wide range of shear-dependent fluids. The model is applied to perform simulations of viscous fingering in shear- thinning fluids, and it is found to be capable of describing the complete crossover from the Newtonian regime at low shear rate to the strongly shear-thinning regime at high shear rate. The width selection of a single steady-state finger is studied in detail for a 2-plateaux shear-thinning law (Carreau law) in both its weakly and strongly shear-thinning limits, and the results are related to previous analyses. In the strongly shear-thinning regime a rescaling is found for power-law (Ostwald-de-Waehle) fluids that allows for a direct comparison between simulations and experiments without any adjustable parameters, and good agreement is obtained

Implementing a Burglary Prevention Program with Evidence-Based Tracking: A Case Study

This case study reports an effort to measure the implementation of all elements of a burglary intervention known as 'super cocooning', in a part of the City of Manchester Division of the Greater Manchester Police (Gorton North and South) identified as an area of high repeat and near repeat burglary.College of Policing and Greater Manchester Polic