Dual cut-off CBMC

7 (randomly for the first bead). The k-th (f-th) trial orientation is the old orientation. The Rosenbluth weight W(o) of the old configuration is defined as 

The CBMC algorithm greatly improves the conformational sampling for molecules with articulated structure and increases the efficiency of chain insertions (required for the calculation of chemical potentials, grand-canonical, and Gibbs ensemble simulations) by several orders of magnitude. To make these simulations more efficient and to use this technique for branched molecules, several extensions are needed  

It is possible to split the external potential that is used for the selection of trial segments into two parts 

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