Modern Imperialism: Canadian Renditions to Torture and the Production of Impunity for Sovereign Racialized State Violence

This dissertation focusses on four Muslim Canadian men, Ahmed Elmaati, Abduallah Almalki, Maher Arar and Muayyed Nureddin, and how their renditions to torture were organized by Canadian state officials and explained to the public through the Arar Commission Report (2006) and the Iacobucci Inquiry Report (2008) in ways that makes racism compatible with liberal values. This dissertation traces in a Foucaultian sense diverse forms of power, such as sovereign-discipline-governmentality, through which Islamic fundamental terrorist identities were imprinted onto the bodies of these four men. I conceptualize torture as a form of sovereign racialized violence that was organized around the mens citizenship rights and Canadas national narrative as multicultural liberal democracy. The torture to coerce false confession included individual, group and national identity transformations that were reproduced at a discursive level through the government inquiries. In fact, the mens bodies became the referential sites for producing political legitimacy for racially repressive laws and policing practices symbolic of cultural ordering. I contend that Canadian renditions to torture constitute a form of modern imperialism whereby white settler domination in Canada was reproduced through practices such as racialized policing, criminalization without evidence, indefinite detentions and deportations, that were legitimized through the transnational organized production of Islamic fundamentalist terrorist identities. The production of the four men as Islamic fundamentalist terrorists operated through sovereign forms of racialized state violence as well as (self) disciplinary processes that de-territorialized torture from the Canadian geopolitical context to Syria and Egypt and included the men in the process of rendition and torture. Through the outsourcing of torture, the Orient is Orientalized and the narrative of Canada as a multicultural liberal democracy can be sustained while simultaneously implementing racially repressive laws as necessary practices in the fight against Islamic fundamentalist terrorism

High density cluster jet target for storage ring experiments

The design and performance of a newly developed cluster jet target installation for hadron physics experiments are presented which, for the first time, is able to generate a hydrogen cluster jet beam with a target thickness of above $10^{15}\,\mathrm{atoms/cm}^2$ at a distance of two metres behind the cluster jet nozzle. The properties of the cluster beam and of individual clusters themselves are studied at this installation. Special emphasis is placed on measurements of the target beam density as a function of the relevant parameters as well as on the cluster beam profiles. By means of a time-of-flight setup, measurements of the velocity of single clusters and velocity distributions were possible. The complete installation, which meets the requirements of future internal fixed target experiments at storage rings, and the results of the systematic studies on hydrogen cluster jets are presented and discussed.Comment: 10 pages, 18 figure

SeSam - das webbasierte Senckenbergische Sammlungsmanagementsystem.

SeSam wurde vom Forschungsinstitut Senckenberg als zentrales Sammlungsmanagementsystem entwickelt. Das System ist für alle Sammlungen konzipiert, unabhängig davon ob sie zoologische oder botanische, rezente oder fossile Stücke enthalten. Durch gemeinsame Beschreibungselemente wird eine einheitliche Erfassung sichergestellt. Durch die webbasierte Architektur von SeSam ist zur Eingabe und Abfrage von Daten lediglich ein Webbrowser erforderlich.SeSam was developed at the Senckenberg Research Institute as a central collection management system. It is designed to be used for all kinds of collections, independent of whether they hold zoological or botanical, recent or fossil specimens. Common descriptive elements ensure consistent data entry. With SeSam‘s architecture being web-based, all that is required for data entry and retrieval is a web browser

Refrigerated hydrogen gas jet for the Fermilab antiproton accumulator

A hydrogen gas jet has been built for use at Fermilab for the study of charmonium spectroscopy in proton-antiproton annihilations. The hydrogen gas jet is part of an upgrade to a previous experiment which ran in the Fermilab 1990-1991 fixed target program utilizing a jet cooled to 80 K with liquid nitrogen. The jet delivers a defined stream of hydrogen gas which travels through a series of vacuum chambers and then intersects the circulating antiproton beam. The goal of the upgrade is to provide a hydrogen gas stream at least twice as dense as used for the earlier experiment to increase the interaction rate and allow an improved study of rare processes. This is achieved by cooling the stream to below 30 K using a Gifford-McMahon refrigerator. The jet apparatus is designed to allow motion in the plane perpendicular to the gas stream as well as angular positioning at the jet nozzle to provide a means of optimizing the interaction rate. Two skimmers located in the vacuum chambers are used to define the gas stream dimensions. The jet target vacuum chambers require constant pumping with turbomolecular pumps. The vacuum space around the jet is designed to have a large system pumping speed so that the chamber pressure can be maintained below an absolute pressure of 1 Pa. The jet will operate in the next fixed target run at Fermilab. Details of the design and test results are discussed

Measurement of direct photon production at Tevatron fixed target energies

Measurements of the production of high transverse momentum direct photons by a 515 GeV/c piminus beam and 530 and 800 GeV/c proton beams in interactions with beryllium and hydrogen targets are presented. The data span the kinematic ranges of 3.5 < p_T < 12 GeV/c in transverse momentum and 1.5 units in rapidity. The inclusive direct-photon cross sections are compared with next-to-leading-order perturbative QCD calculations and expectations based on a phenomenological parton-k_T model.Comment: RevTeX4, 23 pages, 32 figures, submitted to Phys. Rev.

Muon (g-2) Technical Design Report

The Muon (g-2) Experiment, E989 at Fermilab, will measure the muon anomalous magnetic moment a factor-of-four more precisely than was done in E821 at the Brookhaven National Laboratory AGS. The E821 result appears to be greater than the Standard-Model prediction by more than three standard deviations. When combined with expected improvement in the Standard-Model hadronic contributions, E989 should be able to determine definitively whether or not the E821 result is evidence for physics beyond the Standard Model. After a review of the physics motivation and the basic technique, which will use the muon storage ring built at BNL and now relocated to Fermilab, the design of the new experiment is presented. This document was created in partial fulfillment of the requirements necessary to obtain DOE CD-2/3 approval

Measurement of the Positive Muon Anomalous Magnetic Moment to 0.20 ppm

We present a new measurement of the positive muon magnetic anomaly, a_{μ}≡(g_{μ}-2)/2, from the Fermilab Muon g-2 Experiment using data collected in 2019 and 2020. We have analyzed more than 4 times the number of positrons from muon decay than in our previous result from 2018 data. The systematic error is reduced by more than a factor of 2 due to better running conditions, a more stable beam, and improved knowledge of the magnetic field weighted by the muon distribution, ω[over ˜]_{p}^{'}, and of the anomalous precession frequency corrected for beam dynamics effects, ω_{a}. From the ratio ω_{a}/ω[over ˜]_{p}^{'}, together with precisely determined external parameters, we determine a_{μ}=116 592 057(25)×10^{-11} (0.21 ppm). Combining this result with our previous result from the 2018 data, we obtain a_{μ}(FNAL)=116 592 055(24)×10^{-11} (0.20 ppm). The new experimental world average is a_{μ}(exp)=116 592 059(22)×10^{-11} (0.19 ppm), which represents a factor of 2 improvement in precision

The 2010 Interim Report of the Long-Baseline Neutrino Experiment Collaboration Physics Working Groups

Corresponding author R.J.Wilson ([email protected]); 113 pages, 90 figuresCorresponding author R.J.Wilson ([email protected]); 113 pages, 90 figuresIn early 2010, the Long-Baseline Neutrino Experiment (LBNE) science collaboration initiated a study to investigate the physics potential of the experiment with a broad set of different beam, near- and far-detector configurations. Nine initial topics were identified as scientific areas that motivate construction of a long-baseline neutrino experiment with a very large far detector. We summarize the scientific justification for each topic and the estimated performance for a set of far detector reference configurations. We report also on a study of optimized beam parameters and the physics capability of proposed Near Detector configurations. This document was presented to the collaboration in fall 2010 and updated with minor modifications in early 2011