Abstract A Balloon Experiment with Superconducting Spectrometer (BESS) to search for primordial anti-matter abundance in cosmic radiation and to measure anti-proton spectrum is being prepared. A large geometry factor of 1.2 m2sr was achieved by the solenoidal detector configuration. The magnet provides an uniform magnetic field of 1.2 tesla over a cylindrical volume of 0.85m in diameter and 1.0m in length. Anti-helium nuclei will be searched for to a level of anti-He/He∼10−8 and the low energy primary anti-proton flux will be observed down to anti-proton/proton∼10−6. The superconducting magnet has been constructed and excited to 1 tesla and showed good and stable performance. The main tracking device, jet type drift chamber, together with the readout electronics and data acquisition system have been assembled and tested. A flight to test the detector performance at the balloon altitude was successfully carried out in September 1989.


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    Title :

    Search for anti-particles of cosmic origin with a superconducting spectrometer


    Contributors:
    Anraku, K. (author) / Haga, T. (author) / Imori, M. (author) / Nozaki, M. (author) / Orito, S. (author) / Shimamura, K. (author) / Tsunoda, T. (author) / Yoshida, T. (author) / Yoshimura, K. (author) / Ajima, Y. (author)

    Published in:

    Advances in Space Research ; 13 , 2 ; 169-172


    Publication date :

    1992-01-01


    Size :

    4 pages




    Type of media :

    Article (Journal)


    Type of material :

    Electronic Resource


    Language :

    English