LRO has two x UKRAA Muon Detectors (https://www.ukraa.com/32-cosmic-ray-detection). These are build using the plans at CosmicWatch (http://www.cosmicwatch.lns.mit.edu/)
The two receivers at LRO are in master/slave configuration with one on top of other to isolate atmospheric muons (presumed to be results of cosmic ray impacts with atmosphere from space) from terrestial muons.
Live views of plots of data from LRO can be seen via this link:
Previously recorded stream: