High altitude test of RPCs for the Argo YBJ experiment

INFN and Dipartimento di Fisica dell'Università di Roma Tre, Italy
Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment (Impact Factor: 1.22). 04/2000; 443(2-3):342-350. DOI: 10.1016/S0168-9002(99)01079-7


A 50 m2 RPC carpet was operated at the YanBaJin Cosmic Ray Laboratory (Tibet) located 4300 m a.s.l. The performance of RPCs in detecting Extensive Air Showers was studied. Efficiency and time-resolution measurements at the pressure and temperature conditions typical of high mountain laboratories, are reported.

Download full-text


Available from: Leopoldo Milano
  • Source
    • "The RPCs are operated in streamer mode by using a gas mixture (Ar 15%, Isobutane 10%, TetraFluoroEthane 75%) for high altitude operation [1]. The high voltage settled at 7.2 kV ensures an overall efficiency of about 96%. "
    [Show abstract] [Hide abstract]
    ABSTRACT: The ARGO-YBJ experiment consists of a 5000 m2 single layer of Resistive Plate Chambers situated at Yangbajing, Tibet (P.R. of China), 4300 meters a.s.l. (atmospheric depth 600 g/cm2). The percentage of active area all over the carpet is 92% and a partially instrumented guard ring (1700 m2) around the central zone extends the instrumented area up to 11000 m2. The experiment is operated in scaler mode, shower mode and analog mode and is sensitive to cosmic rays in the 109-1015 eV energy range. From few hundreds GeV on, the arrival direction of cosmic rays is inferred by the study of the induced extensive air showers. A review of the most important results of the ARGO-YBJ experiment in gamma-ray astronomy and cosmic-ray physics will be given, focusing on the potential of RPCs in ground-based astroparticle physics.
    Full-text · Article · Aug 2013 · Journal of Instrumentation
  • Source
    • "Cherenkov detectors reach TeV energies, but with a low duty cycle and a small solid angle. For these reasons, the detection of gamma ray sources in the TeV region requires speci®c experiments, like Milagro in New Mexico [8] or ARGO-YBJ in Tibet [9] [10]. The performances of these kinds of detectors are discussed in a very general way in Ref. [11]. "
    [Show abstract] [Hide abstract]
    ABSTRACT: A neural algorithm was developed to separate electromagnetic and hadronic showers detected with an air shower array. The requirements on the detector performance are very general, so that the results of the calculation can be applied to a wide set of detectors, actually operating or planned for the future. More then 700 000 showers were generated using the Corsika package and were propagated through an ideal pixel-like detector. The peculiarities of each class of showers are presented in detail and it is shown how the neural net architecture is structured around them. The neural net performances were studied for different sets of simulated data. The physics relevance of the gamma–hadron separation is also discussed.
    Preview · Article · Mar 2001 · Astroparticle Physics
  • [Show abstract] [Hide abstract]
    ABSTRACT: A large number of papers and reports that have been published after the Napoli RPC97 workshop show an impressive progress in improving the RPC performances and extending their use to new fields of application. This talk is an attempt to summarize the state of the art at the beginning of the present workshop as an introduction to the new results that will be presented. A discussion about the scaling of operating voltage and time resolution with the gas gap size will also be presented.
    No preview · Article · Dec 2000 · Nuclear Instruments and Methods in Physics Research Section A Accelerators Spectrometers Detectors and Associated Equipment
Show more