Yes, Yijie, I am referring to multiple copies of the EBV genome forming concatamers via rolling circle replication. Based on your description, it seems like this method should be able to distinguish between the linear concatameric copies and the episomal copies.
This seems to be exactly what I am trying to accomplish. I was hoping to find a way to quantify the linear vs circular DNA by qPCR, but it seems this may be the most feasible option