carpet method
1.The characteristics of a 50m2 RPC carpet(prototype of YBJ-ARGO experiment)was analyzed using its test run data. A correction method of the systematic time error is suggeSted, and nonunform azimuthal angle distribution possibly due to direction reconstruction error on an asymmetric carpet is reported
2.By an exact real space renormalization group method,the scaling behavior of Sierpinsk_1 Carpet is studied and the spectral dimension is obtained as ds=1.611.The result is checked with the numerical caculation of DC con- ductivity exponent t in the Einstein relation. Besides,The dynamic exponent Z for heisenberg spin system at percolation threshold also caculated.
