Comparison of Muon Flux to SLAC

 

This experiment is to compare vertical muon flux as measured by your detector to that determined by muon detectors at Stanford Linear Accelerator. There certainly are variations in flux with time, we wish to see if the variations at SLAC in California and the variations in our location are synchronized. The data for SLAC are available online:

 

[ http://www2.slac.stanford.edu/vvc/cosmicrays/crdatacenter.html ]

 

Procedure

You are trying to see how flux changes over time, and if these changes correlate to those observed by another detector far away.  Do you think they will be similar?  Why or why not?  Do you think it makes sense to do a short run or a very long one?

 

Analysis

Plot a graph showing both the flux you measured and the values reported by SLAC versus time on the same paper. You should also plot a graph of your values of flux as a function of the SLAC values. (Need help importing SLAC data to Excel?)

           

Is your measured flux similar to the value from SLAC? If, not is your value generally lower or higher?  What reasons might there be for differences?  Did you notice equivalent changes in both values of flux with time?  How would the second graph appear if the flux changes in each location agreed?

 

Extension

Do this experiment in conjunction with students at another school in Rochester to see what sort of correlation there might be between detectors that are closer to us than California.