Author/Authors :
Ohoka، نويسنده , , H. and Takeda، نويسنده , , M. and Hayashida، نويسنده , , N. and Honda، نويسنده , , K. and Honda، نويسنده , , M. and Inoue، نويسنده , , N. and Kadota، نويسنده , , K. and Kakimoto، نويسنده , , F. and Kamata، نويسنده , , K. and Kawaguchi، نويسنده , , S. and Kawasumi، نويسنده , , N. and Matsubara، نويسنده , , Y. and Murakami، نويسنده , , K. and Nagano، نويسنده , , Jose M. and Teshima، نويسنده , , M. and Tsushima، نويسنده , , I. and U، نويسنده ,
Abstract :
The data acquisition system of the Akeno Giant Air Shower Array (AGASA) is described. The AGASA array covers an area of about 100 km2 and has been operated since 1990 to study the origin of extremely high energy cosmic rays. In the early stage of our experiment, AGASA was divided into four sub-arrays called branches for topographical reasons so that air showers were observed independently at each branch. In December 1995, we have improved the data acquisition system and unified the four branches into a single detection system. By this unification, the effective detection area of the AGASA increases by about 1.7 times in the early stage.
