136042277
RD19: status report and addendum. Development of hybrid and monolithic silicon micropattern detectors
124110052
Parton-cluster model of hadrons and impact parameter structure of non-diffractive collisions
A model of hadron structure and hadron collisions is proposed for interpreting experimental data. It starts from the assumption that a hadron consists of a number of partons with very large masses which are grouped inside hadrons into clusters with quantum numbers of the known hadrons. In hadron collisions the most peripheral clusters behave as spectators and represent leading particles; non-diffractive hadron collisions can then be interpreted mostly as stripping-like reactions. It is shown on a sample of annihilation and non-annihilation pp collisions at 5·7 GeV/c that experimental data for several different leading particles are in good qualitative agreement with the basic requirement of the model which concerns the strong impact parameter angular dependence of the leading particles.
186674866
The First Three TILECAL Submodule Assembly in Prague
110037616
The results of mass testing of the plastic streamer tubes for the DELPHI hadron calorimeter
Abstract The procedure and results of mass testing of plastic streamer tubes for the DELPHI hadron calorimeter are described in detail. The mass testing includes three stages: high voltage test and conditioning, X-ray test on radiation load capability and wire tension control in ready detectors. The productivity of the test workshop was 240 detectors per day at maximum. After testing of about 25 000 streamer tubes, 8% have been rejected on the ground of severe rejection criteria which exceed significantly the working conditions in the DELPHI experiment.
136300702
RD19: status report on 1993 development of hybrid and monolithic silicon micropattern detectors
109716342
Monitoring setup of Prague T2 site
Quality monitoring is a crucial part in struggle for reliability of every Tier 2 site. We present a solution based on Nagios installation in Prague. Our solution includes both third party and in-house developed add-ons and plug-ins. We focus on integrating results from grid-wise monitoring tools (such as SAM or Gstat) at one place (our Nagios instance). We also present an automated way to generate configuration files for Nagios from local database of hardware and services.
121375652
DESCRIPTION OF HIGH-ENERGY ELASTIC HADRON SCATTERING IN BOTH THE COULOMB AND HADRONIC DOMAINS
Though the current model of elastic hadron scattering (based on West and Yennie formula) is based on some basic assumptions being not in harmony with the known experimental facts, it is still used in analyzing measured data. These assumptions are critically examined and possible consequences following from a more general model approach are discussed.
122074191
Phenomenological models of elastic nucleon scattering and predictions for LHC
Abstract The hitherto analyses of elastic collisions of charged nucleons involving common influence of Coulomb and hadronic scattering have been based practically on West and Yennie formula. However, this approach has been shown recently to be inadequate from experimental as well as theoretical points of view. The eikonal model enabling to determine physical characteristics in impact parameter space seems to be more pertinent. The contemporary phenomenological models admit, of course, different distributions of collision processes in the impact parameter space and cannot give any definite answer. Nevertheless, some predictions for the planned LHC energy that have been given on their basis may be useful, as well as the possibility of determining the luminosity from elastic scattering.
116951283
Problems related to description of particle decay
9612950
High-energy elastic hadron collisions and space structure of hadrons
The elastic and inelastic profiles have been derived from the measured elastic differential cross section data with the help of exact impact parameter representation of elastic scattering amplitude. The results obtained for $pp$ scattering at energy of 53 GeV and $\bar{p} p$ scattering at energy of 541 GeV have been presented. They indicate that nucleons can be regarded as objects characterized by a small core (diameter $\sim$ 0.4$\div$0.8 fm) and a half transparent outer shell (responsible mainly for elastic hadron scattering).
123416860
Applicability of Martin’s equations in high-energy elastic hadron scattering
The validity region of Martin`s equations enabling one to determine the t dependence of the real part of the elastic hadron amplitude from its imaginary part is critically reexamined. It can be concluded on the basis of a more precise analysis that quite unjustified and in principle incorrect physical results are obtained if the equations are used outside this region, i.e., for {vert_bar}t{vert_bar}{approx_gt}0.15 GeV{sup 2}. {copyright} {ital 1997} {ital The American Physical Society}