No abstract available

[en] The Large Volume Detector (LVD) is described. The current status of the construction is given. The list of physics topics to be studied is discussed. A few optimized physics topics are explained. In particular LVD is extremely well suited to explore the dynamics of stellar collapse, study neutrino oscillations and put limits on the proton lifetime

[en] Two ways are described of ''creating'' clusters. The first is a zone graph technique suggested by Kryzwicki and Weingarten which picks out clusters in rapidity space. The second method is a nearest neighbor technique first exploited by Lundlam, which effectively operates in invariant mass space. Both these techniques define clusters in different ways, but each of them has arbitrary aspects chosen to give the best results. The techniques are used for the analysis of experimental data on the π^-p interaction at 147 GeV/c obtained on the Fermilab hybrid spectrometer. (Z.J.)

[en] A holographic bubble chamber is described that will search for the tau neutrino. Tests are described that demonstrate that with standard lasers photographs of 30 micron diameter bubbles can be taken throughout a 36 inches diameter x 33 inches deep chamber. It is shown that bubbles of this diameter are sufficient for this experiment and that a measurement of the impact parameter will yield the tau meson lifetime. (U.K.)

[en] Diffraction dissociation of both the beam and the target particles is studied in 147 GeV/c π/sup +/p interactions in the Fermilab 30 inch bubble chamber using the hybrid spectrometer system. Results based on a study of 25,000 events are presented and compared to the results of a similar study done on 147 GeV/c π/sup -/p interactions

[en] Monte Carlo calculations of showers initiated by π^- of 10, 50, 100, and 170 GeV, and by e^- of 10, 50 and 100 GeV have been made in calorimeters using liquid argon as active material and Cu, Pb and U as absorbers. The effect on the resolution of intermixing plates of Cu and Pb, and of varying their thickness have been studied. An analytical method of weighting applied to the energy distribution has improved our results in all the configurations studied. The best performances are predicted for an all-Lead/LAr calorimeter or for an interleaved structure of Pb and Cu. Both of these give resolutions of [σ(E)/E] ∼ 0.50/√E, with little dependence on energy

[en] The microsonic detector (MSD) has good spatial resolution, moderate flux capacity, moderate event rate, and small volume. The MSD is a super clean bubble chamber driven at 10-50 KHz. It would be used in experiments as a vertex detector to detect short lived particles. Its characteristics--active volume, density, absorption length, radiation length, and spatial resolution--are given. The setup is schematicized, and a photograph of a 130 MeV/C photon bremsstrahlung beam is given

[en] Tests with streamer tubes of small cross section (Frascati type) were performed using gas mixtures of isobutane, CO₂, and small amounts of either Ne or Ar. The flammabilities of the various mixtures were experimentally determined. The operating characteristics of the streamer tubes with such mixtures were studied. It was found that the nonflammable mixture whose isobutane:Ne:CO₂ ratio is 10:2:88 gave an efficiency plateau of about 400 V with a midpoint at 4.9 kV. (orig.)

No abstract available

No abstract available