Sunyaev-Zel'dovich observations of LoCuSS clusters with the Arcminute Microkelvin Imager: moderate X-ray luminosity sample ?

We present 16-GHz observations using the Arcminute Microkelvin Imager (AMI) of 11 clusters with 7�10 37 W< LX < 11�10 37 W (h50 = 1: 0) selected from the Local Cluster Substructure Survey (LoCuSS) and compare them to X-ray data. We use a fast, Bayesian cluster analysis to explore the high-dimensional parameter space of the cluster-plus-sources model and obtain robust cluster parameter estimates in the presence of radio point sources, receiver noise and primordial CMB anisotropy. Our analysis fits a sphe rical, isothermal� -model to our data and assumes the cluster follows the theoretical mass-temperature relation. Large-scale cluster parameters internal to r500 are derived under the assumption of hydrostatic equilibrium. Posterior distributions for the large-scale paramet ers of 8 of our clusters are given; SZ effects towards Abell 1704 and Zw0857.9+2107 were not detected and our spherical� -profile was found to be an inadequate fit to the decrement on our map for Abell 2409.