[en] With data collected in the NA32 experiment, we have obtained the particle identification efficiencies for pions and protons using a clean sample of K⁰_s, Λ⁰ and bar Λ⁰, reconstructed from their decay products. These clean samples of particles are used to calculate the identification efficiency. The particle identification is obtained by means of Cerenkov detectors. In this work, we have studied different identification criteria, but only the best criterium is presented in this paper. The obtained efficiencies for π +- and p are 99.7% 76.5% respectively, also we can estimate that the identification efficiency for kaons is greater than 78%. (Author)

[en] he π(+-) multiplicity distributions in ¹²C and ¹⁶O induced reactions in nuclear emulsion at 2 GeV/nucleon have been measured. The results are compared to a model in which we assume that only independent nucleon-nucleon scattering occurs. Such a model can explain the complete π(+-) multiplicity spectra, only if we assume a very limited shadow effect, i.e. very few nucleons must be swept out of the nuclei during the time of overlap. (author)

[en] Two-particle inclusive correlations are studied by means of the two-particle rapidity correlation function. The data for the analysis come from an exposure of emulsion plates to a 400 GeV proton beam at FNAL. Predominant short-range correlations among shower particles are found, but this does not allow to exclude some long-range correlation behaviour, in agreement with the results obtained in lower-energy experiments. (author)

[en] The total π^+- multiplicity distributions in ¹²C and ¹⁶O induced interactions in nuclear emulsions at 2 GeV/nucleon have been estimated by determining the energy loss of all charged particles. The experimental results are compared to a model in which it is assumed that only individual nucleon-nucleon scattering occurs. It is found that the frequency of high π^+- multiplicity events is too large to be understood by this model, indicating that collective production phenomena are present. (Auth.)

[en] In this paper we describe a FASTBUS slave module for application with the time of flight detector of DELPHI. The module deals with the information obtained in photomultipliers and performs discrimination, mean timing for trigger tasks as well as time digitization with readout features. (orig.)

[en] The π^+- multiplicity distributions in ¹²C and ¹⁶O induced reactions in nuclear emulsion at 2 GeV/nucleon have been measured. The results are compared to a model in which it is assumed that only independent nucleon-nucleon scattering occurs. Such a model can explain the complete π^+- multiplicity spectra, only if a very limited shadow effect is assumed, i.e. very few nucleons must be swept out of the nuclei during the time of overlap. (Auth.)

[en] The silicon chip is mounted on a ceramic substrate and connected to the preamplifiers via kapton foils. A test bench is constructed, which enables measurement of reverse current and capacitance of all strips simultaneously. (orig.)

[en] We describe a method for calibration and test of large-area TOF counters using cosmic radiation. We applied the method to the time-of-flight system of the DELPHI detector at the LEP e⁺e^- storage ring, made of scintillation (NE110) counters (20x350 cm²). The photomultipliers used (EMI 9902KB) reach an average gain of 5x10⁸ at 1700 V and the time resolution achieved is 1.2 ns. Using this method we measured the counter efficiencies as a function of the position; we obtained 135 cm for the effective attenuation length and 40 photoelectrons for a minimum-ionizing particle crossing the center of the counter. (orig.)

[en] In this paper we report the physical properties of the time of flight (TOF) scintillator counters used for the DELPHI Experiment at CERN. We discuss the different choices studied for the wrapping of the counters in order to obtain best efficiencies for light transmission. A very good agreement of the performances of the counters has been found with the results of an original Monte Carlo program. The main characteristics of the TOF counters of DELPHI are: an effective light attenuation length of 135 cm, effective light speed of 15.91 cm/ns, a time resolution of 1.2 ns, and an efficiency for detection of minimum ionizing particles of 99.9%. (orig.)

[en] The ATLAS Tile Calorimeter is a sampling detector composed by cells made of iron-scintillator tiles. The calorimeter cell signals are digitized in the front-end electronics and transmitted to the Read-Out Drivers (RODs) at the first level trigger rate. The ROD receives triggered data from up to 9856 channels and provides the energy, phase and quality factor of the signals to the second level trigger. The back-end electronics is divided into four partitions containing eight RODs each. Therefore, a total of 32 RODs are used to process and transmit the data of the TileCal detector. In order to emulate the detector signals in the production and commissioning of ROD modules a board called ROD Injector and Multiplexer Board (RIMBO) was designed. In this paper, the RIMBO main functional blocks, PCB design and the different operation modes are described. It is described the crucial role of the board within the TileCal ROD test-bench in order to emulate the front-end electronics during the validation of ROD boards as well as during the evaluation of the ROD signal reconstruction algorithms. Finally, qualification and performance results for the injection operation mode obtained during the Tile Calorimeter ROD production tests are presented.