Belle II Italian Collaboration                         File:INFN logo 2017.svg - Wikipedia        

The outermost detector for the measurement of KL muon (KLM) in the Belle II detector is based on resuing the RPCs of the Belle detector. The endcaps and the inner layers of the barrel RPCs of KLM will be replaced with scintillators due to increased backgrounds expected in Belle II.

 

                                           The structure of the KLM detector