Tunka-133 EAS Cherenkov Array: Status of 2007
  The new EAS Cherenkov array Tunka-133, with about 1 km**2 sensitive area, is being installed in the Tunka Valley since the end of 2005. This array will permit a detailed study of the cosmic ray energy spectrum and the mass composition in the energy range of 10**15-10**18 eV with a unique method. The array will consist of 19 clusters, each composed of 7 optical detectors. The first cluster started operation in October 2006. We describe the data acquisition system and present preliminary results from data taken with the first cluster. 
N.M.Budnev, O.V.Chvalaev, O.A.Gress, N.N.Kalmykov, V.A.Kozhin,   E.E.Korosteleva, L.A.Kuzmichev, B.K.Lubsandorzhiev, R.R.Mir...