1,721,352 research outputs found
Architecture of a general purpose embedded Slow-Control Adapter ASIC for future high-energy physics experiments
No full textThis work is aimed at defining the architecture of a new digital ASIC, namely Slow-Control Adapter (SCA), which will be designed in a commercial 130-nm CMOS technology. This chip will be embedded within a high-speed data acquisition optical link (GBT) to control and monitor the front-end electronics in future high-energy physics experiments. The GBT link provides a transparent transport layer between the SCA and control electronics in the counting room. The proposed SCA supports a variety of common bus protocols to interface with end-user general-purpose electronics. Between the GBT and the SCA a standard 100 Mb/s IEEE-802.3 compatible protocol will be implemented. This standard protocol allows off-line tests of the prototypes using commercial components that support the same standard. The project is justified because embedded applications in modern large HEP experiments require particular care to assure the lowest possible power consumption, still offering the highest reliability demanded by very large particle detectors
Investigating ac space charge accumulation in polymers by PEA measurements
No full textThis paper presents the first results of a procedure which allows the determination of the threshold for space charge build-up in polymeric insulation subjected to ac electrical field. Thresholds for space charge accumulation under dc were determined poling insulation until space charge appeared steadily. In ac the amount of charge accumulated is much smaller than in dc, and the time needed to reach steady conditions can be very long at fields close to threshold. Hencefrom, ac poling tests were made at different fields and for different times until a chosen value of accumulated charge was reached. Decreasing the test voltage, a limit field was determined below which charge accumulates much more slowly with respect to the linear relation obtained at higher field levels, and its value constitutes an approximate estimate of the searched threshold field. This procedure is applied to specimens of cross-linked polyethylene. A threshold field lower than, but close to, 20 kV/mm is found
Le "Tragedie" più antiche. Milano, Biblioteca Ambrosiana, G 82 sup. (S.P. 9/20) e I "Dialogi" da Montecassino a Milano. Milano, Biblioteca Ambrosiana, C 90 inf.
No full textIl commento alle Tragedie nello zibaldone autografo di Lorenzo Ridolfi (Firenze, Biblioteca Nazionale Centrale, Panciatichiano 147)
No full textSeneca nelle vesti di dottore medievale in un codice delle Tragedie (Firenze, Biblioteca Nazionale Centrale, Banco Rari 49)
No full textUn codice contenente l'"undicesima" tragedia: l'Ecerinis di Albertino Mussato (Firenze, Biblioteca Medicea Laurenziana, Pluteo 37.8)
No full textUn codice contenente Seneca Retore e testi apocrifi, posseduto dal Salutati e dal Niccoli (Firenze, Biblioteca Nazionale Centrale, Conv. Soppr. J.5.27)
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