[en] The BaBar experiment is currently operating near the rate limit of its ability to log event data to disk and tape using the existing hardware and software systems. Consequently we have chosen to design and implement a new system for logging event data. The new system is designed to be scalable, so that the data rate can be increased by adding systems at one of three levels. It also has the property that data can be logged at almost unlimited burst rates without introducing dead time. The key to these features lies in the use of many nodes within the level three trigger system of BaBar. This allows the events to first be logged to local disks within the trigger system, and then later to be merged to any of multiple merge servers in non-real-time

[en] Archeops is a balloon-borne experiment designed to measure the temperature fluctuations of the CMB on a large region of the sky (≅ 30%) with a high angular resolution (10 arcminutes) and a high sensitivity (60μK per pixel). Archeops will perform a measurement of the CMB anisotropies power spectrum from large angular scales (l ≅ 30) to small angular scales (l ≅ 800). Archeops flew for the first time for a test flight in July 1999 from Sicily to Spain and the first scientific flight took place from Sweden to Russia in January 2001. The data analysis is on its way and I present here preliminary results, realistic simulations showing the expected accuracy on the measurement of the power spectrum and perspectives for the incoming flights (Winter 2001/2003)

[en] The notes arose out of a series of lectures given in Copenhagen in 1973/74. The principal aim of the course was to give a reasonably comprehensive account of the considerable number of new ideas and techniques in dispersion theory which have been developed over the past few years. General background material is also given but is treated in less detail. Modern dispersion theory is seen to have two principal types of application in high energy strong interaction physics. Although not sharply seperated they can be characterized roughly as (1) use of dynamical singularities in the amplitude analysis of experimental data, and (2) dynamical interpretation of hadronic amplitudes. In the first volume the authors have concentrated on applications of the first class. A companion volume is planned in which some of the important dominantly dynamical areas of application will be described. (Auth.)

[en] We show how to extract much information relevant to SU(3) symmetry from a partial-wave analysis of K-barN → K-barN, K-barN → πΣ, and K-barN → πΛ up to 1.9 GeV (center-of-mass system). The method uses the discrepancy function of dispersion theory, and the results provide checks on a considerable number of couplings between hadrons

[en] The problems are discussed of breaking SU(3) in baryon multiplets. It is shown that (a) the exchange model for low energy baryon states is not in conflict with confined quark type theories although it is not consistent with free heavy quark theories; (b) an apparent trouble for the exchange model is the considerable breaking of channel thresholds arising from the heaviness of the strange quarks. The high threshold theorem shows that this makes the calculations to appear to depart considerably from the SU(3) symmetry in that some channels may be ignored. However, the strong attractive interactions in the remaining channels seem, in view of the symmetric matrix properties, to ensure that much of the symmetry remains in readily observable amplitudes. (Z.J.)

[en] Coulomb corrections (non-relativistic) and electromagnetic corrections (relativistic) to pion-nucleon interactions at low, medium and high energies are given. Important features of the dispersion theory method already appearing in the non-relativistic case are briefly surveyed. The electromagnetic corrections are used to explain informations on the Δ resonances from π⁺p scattering

[en] Two methods in NN elastic scattering analysis are developed: (a) how to study the uniqueness of analysing NN->NN scattering amplitudes in terms of various meson exchanges; (b) how to write down partial-wave dispersion relations for NN->NN, and how to deduce the basic properties of ω- and epsilon-meson exchange forces. (orig.)

[en] After noticing that the Chernobyl accident had emphasized the importance of transfrontier damages risk, two points of views are exposed: the territoriality principle that expresses that the compensation regime of the Convention (Vienna Convention on civil liability in 1963) should be profitable to national from states having accepted the rights and the obligations of the Convention. The other principle is the universality principle that advocates that states at the origin of nuclear risks have to take in charge the compensation of eventual victims whatever they are or no national from countries being Parties of the Convention. (N.C.)

[en] Real-time replica control room simulators are now in general use for the training of nuclear power plant operators, and the almost universal trend towards accurate physics-based plant models and detailed operator interface has opened up interesting and valuable engineering applications. This paper discusses the use of the Torness AGR Simulator in its dual role of commissioning support tool and operator training facility. (author)

No abstract available