Design of analog front-ends for the RD53 demonstrator chip

The RD53 collaboration is developing a large scale pixel front-end chip, which will be a tool to evaluate the performance of 65 nm CMOS technology in view of its application to the readout of the innermost detector layers of ATLAS and CMS at the HL-LHC. Experimental results of the characterization of small prototypes will be discussed in the frame of the design work that is currently leading to the development of the large scale demonstrator chip RD53A to be submitted in early 2017. The paper is focused on the analog processors developed in the framework of the RD53 collaboration, including three time over threshold front-ends, designed by INFN Torino and Pavia, University of Bergamo and LBNL and a zero dead time front-end based on flash ADC designed by a joint collaboration between the Fermilab and INFN. The paper will also discuss the radiation tolerance features of the front-end channels, which were exposed to up to 800 Mrad of total ionizing dose to reproduce the system operation in the actual experiment

Feasibility studies for the measurement of time-like proton electromagnetic form factors from p¯ p→ μ+μ- at P ¯ ANDA at FAIR

This paper reports on Monte Carlo simulation results for future measurements of the moduli of time-like proton electromagnetic form factors, | GE| and | GM| , using the p¯ p→ μ+μ- reaction at P ¯ ANDA (FAIR). The electromagnetic form factors are fundamental quantities parameterizing the electric and magnetic structure of hadrons. This work estimates the statistical and total accuracy with which the form factors can be measured at P ¯ ANDA , using an analysis of simulated data within the PandaRoot software framework. The most crucial background channel is p¯ p→ π+π-, due to the very similar behavior of muons and pions in the detector. The suppression factors are evaluated for this and all other relevant background channels at different values of antiproton beam momentum. The signal/background separation is based on a multivariate analysis, using the Boosted Decision Trees method. An expected background subtraction is included in this study, based on realistic angular distributions of the background contribution. Systematic uncertainties are considered and the relative total uncertainties of the form factor measurements are presented

PANDA Phase One - PANDA collaboration

The Facility for Antiproton and Ion Research (FAIR) in Darmstadt, Germany, provides unique possibilities for a new generation of hadron-, nuclear- and atomic physics experiments. The future antiProton ANnihilations at DArmstadt (PANDA or P¯ANDA) experiment at FAIR will offer a broad physics programme, covering different aspects of the strong interaction. Understanding the latter in the non-perturbative regime remains one of the greatest challenges in contemporary physics. The antiproton–nucleon interaction studied with PANDA provides crucial tests in this area. Furthermore, the high-intensity, low-energy domain of PANDA allows for searches for physics beyond the Standard Model, e.g. through high precision symmetry tests. This paper takes into account a staged approach for the detector setup and for the delivered luminosity from the accelerator. The available detector setup at the time of the delivery of the first antiproton beams in the HESR storage ring is referred to as the Phase One setup. The physics programme that is achievable during Phase One is outlined in this paper

Gaerungsalkohol aus Agrarprodukten als Biokraftstoff Aethylalkohol aus Zuckerrueben, Kartoffeln, Mais, Getreide. Eine Potentialabschaetzung fuer die Bundesrepublik Deutschland

SIGLETechnische Informationsbibliothek Hannover: AC 5776+a. / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekDEGerman

Overload for ionized solutes in reversed-phase high-performance liquid chromatography

Overloading occurs for submicrogram quantities of ionized solutes particularly when using low ionic strength mobile phases at low pH (e.g., formic acid), even with highly inert silica RP-HPLC columns of normal dimensions. Much higher loads can produce a sharp L-shaped peak with retention above the column void volume, in line with the hypothesis that a small number of high-energy sites fill first and are rapidly overloaded, followed by a much larger number of weaker sites. However, charged acids and bases show identical overloading behavior; overloading is reduced as the mobile-phase ionic strength is increased. These findings raise questions about the physical nature of the strong sites. The rapid overloading of silica and purely polymeric phases could be explained by mutual repulsion of ionic species or their inability to fully penetrate the hydrophobic structure of the phase. However, these alternative hypotheses cannot readily explain the high total saturation capacities obtained using frontal analysis. Ion pairing with trifluoroacetic acid may reduce overload, while the effect is less important for formate or phosphate buffers. A surface layer of acetonitrile is not a prerequisite for rapid overloading, as shown by studies using purely aqueous buffers. © 2006 American Chemical Society

Entwicklung und Prototypenbau von photovoltaischen Energieversorgungsanlagen Schlussbericht

With 76 refs., 14 tabs., 124 figs.SIGLEDEGerman

Entwicklung von Technologien fuer NiH2 Batterien Abschlussbericht

With 173 figs., 23 tabs.TIB: FR 4335+a / FIZ - Fachinformationszzentrum Karlsruhe / TIB - Technische InformationsbibliothekSIGLEDEGerman