High spin polarisation at the HERA electron storage ring

This paper describes the progress made in 1992 towards increasing the vertical electron beam polarization at HERA. Utilizing harmonic spin-orbit corrections and beam tuning, the vertical polarization has been increased from 15% to nearly 60% at a beam energy of 26.7 GeV. The long-term reproducibility of the polarization is excellent. Measurements of the build-up time and the energy dependence of the polarization are also described. (orig.)Available from TIB Hannover: RA 2999(93-038) / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman

We, the Peoples? Constitutionalizing the European Union

This article reviews arguments in favour of a formal, written constitution for Europe, and concludes with a better suggestion - a Basic European Law. The article also criticizes the wholehearted embrace of 'popular constitution-making". It does so by drawing on comparative evidence from constitution-making processes in various historical time periods and world regions. It poses three essential questions to organize the debate. First, "why" a European constitution? Second, "what kind" of European constitution? Third, "how" a European constitution? Copyright Blackwell Publishing Ltd 2005.