ARGO-YBJ (Astrophysical Radiation with Ground-based Observatory at YangBaJi
ng) is a detector optimized to study small size air showers. It consists of
a layer of Resistive Plate Counters (RPCs) covering an area of similar to
6500 m(2) and will be located in the Yangbajing Laboratory (Tibet, China) a
t 4300 m a.s.l. ARGO-YBJ will be devoted to a wide range of fundamental iss
ues in cosmic rays and astroparticle physics, including in particular gamma
-ray astronomy and gamma-ray bursts physics in the range 10 GeV divided by
500 TeV. The sensitivity of ARGO-YBJ to detect high energy GRBs is presente
d.