A complete prototype of the CMS tracker read-out and control system has been built using components as close as possible to the final design. It is based on an amplifier and analogue pipeline memory chip (APV), analogue optical links transmitting at 40Ms/s and a VME mounted digitisation and data handling board (FED-PMC), supplemented by a control… (More)
The TOTEM collaboration has developed and tested the first prototype of its Roman Pots to be operated in the LHC. TOTEM Roman Pots contain stacks of silicon detectors with strips oriented in two orthogonal directions. To measure proton scattering angles of a few microradians, the detectors will approach the beam centre to a distance of 10 σ + 0.5 mm (= 1.3… (More)
A prototype of the barrel Tracking Detector of the Compact Muon Solenoid (CMS) experiment proposed for LHC was built and tested in a beam and in a magnetic eld of up to 3 T. It contained 6 microstrip gas chambers, 25 cm long, and 3 double-sided silicon microstrip detectors, 12.5 cm long. We report some preliminary results on the performance of the chambers.
A set of CMS MicroStrip Gas Chambers (MSGC) was exposed to a high intensity 3GeV=c pion beam at a CERN PS facility for a period of two weeks. The performance of the detectors is reported in terms of stability of efficiency and response to minimum ionising particles as well as to more heavily ionising fragments generated by nuclear interactions.
Chronic lymphocytic leukaemia (CLL) is the most common leukaemia in the Western world. Despite this fact, its coexistence with pregnancy is extremely rare, with few cases reported in the literature. Given the rarity of this event, it is difficult to conduct large prospective trials to evaluate diagnostic, management, and outcome aspects. The existing… (More)
TOTEM has measured the differential cross-section for elastic proton-proton scattering at the LHC energy of √ s = 7 TeV analysing data from runs with a standard β * = 1.5m optics. The differential cross section is measured over a |t|-range from 0.36 to 2.5 GeV 2. The differential cross-section shows a significant diffractive minimum at |t| = (0.53 ± 0.01… (More)
SUMMARY: The aim of this work was to determine the chronical stress effects on the encephalic NPY neurons population during the fetal Central nervous system development. Immunocytochemical techniques were used for this purpose: NPY neurons presented a similar morphology during the gestation days studied but their distribution varied in the anterior, medium… (More)
Maternal chronic stress induces premature telencephalic vesicles development. Int. SUMMARY: Exposure to physical or psychological stress causes brain damage ranging from minimal behavioural alterations to different neurodegeneration degrees implying the overproduction of oxidative-nitrosative compounds, apoptosis and cell proliferation. In the present… (More)
In an analysis of multihadronic events recorded at LEP by DELPHI in the years 1992 through 1994, charged hadrons are identiied using the measurement of their energy loss and their Cherenkov angle. Rapidity correlations of-, proton-proton, and-proton pairs are compared. The agreement with the string and cluster fragmentation models is tested. For those pairs… (More)