It is widely recognized now that many cosmological models are more or
less successful in reproducing the structure at redshift 
by construction. This is because the models have still several
degrees of freedom or cosmological parameters which can be
appropriately adjusted to the observations at 
(
, 
, h, 
, 
). There are
several ways to break such cosmological degeneracy. For instance,
combining the COBE 4 year data with the cluster Log N -- Log
S observation, we showed that low-density CDM models are viable,
while the Einstein -- de Sitter model is strongly disfavored.
Along with such consideration, we proposed a cluster survey based on the SZ effect. As a first step toward the goal, we conducted the search for the SZ effect towards the cluster RXJ1347-1145 in multi-bands. We detected the extended signal which are in good agreement with the predicted SZ profiles, especially at 21 and 350 GHz. In particular, our results provide the strongest and most convincing case for the detection of the SZ temperature increment in the submm band in which the profile of a cluster of galaxies is resolved for the first time.
The present result is based on the collaboration with Eiichiro Komatsu, Tetsu Kitayama, Makoto Hattori, Ryohei Kawabe, Hiroshi Matsuo, Sabine Schindler, and Kohji Yoshikawa. We thank Iain Coulson, Nario Kuno and Satoki Matsushita for kind assistance during our observing runs at JCMT, Nobeyama 45-m and Nobeyama Millimeter Array, respectively. This research was supported in part by the Grants-in-Aid for the Center-of-Excellence (COE) Research of the Ministry of Education, Science, Sports and Culture of Japan to RESCEU (No.07CE2002).