[en] A review is given of the various field of interest in underground physics, concerning both particle physics and astrophysics and including a brief description of the first experiments foreseen at the Gran Sasso Laboratory

[en] A review of the basic performance and technology of plastic streamer tubes is presented, together with their applications and developments essentially in the field of digital tracking calorimetry, based on either digital patterns or charge readout, or both, with different pick-up electrode arrangements. (orig.)

No abstract available

[en] The use of plastic streamer tubes, with both digital and charge readout, is discussed in connection with digital tracking calorimeters for neutrino detectors. A new version of plastic tubes, based on limited Geiger operation and Geiger propagation time measurement, is described and its possible application for p-decay and low energy neutrino detector is discussed. (author)

No abstract available

[en] A multiwire detector consisting of an array of cubic sensitive cells operated in the limited streamer mode is presented. It should exhibit improved electromagnetic shower detection properties, due to soft electron absorption caused by its geometry. (Auth.)

[en] If the cathode of a proportional wire device is made out of a suitably resistive material, it is possible to detect induced pulses using pick-up electrodes outside the device itself. Tests have been made on proportional tubes with helical delay lines, strips, or plates as pick-up electrodes. This method simplifies design and construction of pick-up electrodes and furthermore allows unusual electrode arrangements. (Auth.)

[en] The performance of a spark counter based on plasticized PVC is described. The relevant features of this detector match the requirements of surface and underground cosmic ray experiments. Its technological characteristics allow large area detector construction. (orig.)

[en] The performance of a spark counter based on plasticized PVC is described. The relevant features of this detector match the requirements of surface and underground cosmic ray experiments. Its technological characteristics allow large area detector construction

[en] The authors present a study of the basic properties of tubes with thick sense wires (40-200 μm) operated in the limited streamer mode. The pulse shape, singles rate, detection efficiency and dead time are discussed, together with the influence of various parameters such as wire diameter, tube shape and dimensions, gas mixtures. The cathode material may be either conductive or resistive for multicoordinate readout. Preliminary results are shown on the possibility to use resistive plastics as cathode. The results of the study show the possibility to operate limited streamer tubes in a wide range of geometrical parameters, always maintaining their basic features, i.e. high reliability, easy construction, low cost of both detectors and readout electronics. (Auth.)