sPHENIX HCal discussion

[John Lajoie <lajoie AT iastate.edu>]

Dear HCAL'ers:

    Abhisek and I were discussing an idea during the poster session at QM that I thought I might throw out to the general audience for discussion.  It might even be a special run for the test beam....

    As you know, the HCAL calibration is done with vertical muons.  This has seemed to work very well, but of course we are interested in ultimately calibrating for showers that develop longitudinally, not vertically.  It might be nice to double check our calibration procedure using a selection of test beam muons.

    So what we would want is a beam optimized for muons - I don't have the test beam parameters with me but I think you can get a fair fraction of the beam as muons at lower (but not too low) energy?  The Cerenkov counters would also need to be adjusted appropriately.

    I think the key question here would be if we could take data with the HCAL self-trigger?  Since the primary vertical cosmics sample that Abhisek uses for the HCAL calibration is self-triggered, I think we would want to take a sample triggered in the same way?

    Thoughts?

John

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John Lajoie

Professor of Physics

Iowa State University

 

(515) 294-6952

lajoie AT iastate.edu

Contact me: john.lajoie