cut macros - SpiRIT-Collaboration/BeamAnalysis GitHub Wiki

These macros are used to make cuts: some to reduce background, some to specify isotopes.

• PlasticCorr.C This macro produces correlation plots for the four plastic scintillators at F3, F7, F13_1 and F13_2. Note there is not a plastic scintillator at F5. For each plastic, a plot is made of ln(qR/qL) vs. tL-tR. These are two measures of the left-right position. Uncorrelated events should correspond to bad events which cannot be properly reconstructed, and should be removed. See http://www.sciencedirect.com/science/article/pii/S0168583X13009890 for more information. The cuts have to be made by hand. The macro outputs 4 root files and 4 png files. The root files can be used to make a graphical cut. See e.g. http://hadron.physics.fsu.edu/~skpark/document/ROOT/root_beginers/ROOT_for_beginners_Day4.pdf page 33 for making a graphical cut. Sample cuts for 132 Sn are provided in cut/plastic_cuts/F*cut.2819.root.

• PPAChits.C This macro is under construction A slightly modified version of AnaBeamMultiHits2.C. I want to make this a .cpp file so it can be an executable that is performed for each run that is processed with runRIDF.sh. This outputs a root file with a tree "tr" containing leaves: "neve" event number to facilitate merging, "nppachit" the total number of hits on ppacs, "nf7ppac1hit" the number of hits on F7PPAC1, "nf7ppac2hit" the number of hits on F7PPAC2, "f7ppac1_nhit_first" unknown, "f7ppac1_nhit_second" unknown, "f7ppac1_firsttdc_ave" unknown, "f7ppac1_secondtdc_ave" unknown, "ggec" not yet working, but intended to flag for events with early gg closing.