SBS Replay Variable Names

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<<Student Analysis

Descriptions

  • One can search any working build of SBS-offline or Podd for “rVarDef” to find the location of these definitions.
    • From the build src directory: grep -nr “rvardef*” .
  • All definitions below are recorded in the following order: { <variable extension>, <Definition>, <SBS-offline designation> },

Tracking Definitions

  • These definitions are defined in Podd. See github here.
    • THaSpectrometer.cxx
  • All definitions below are accesed from the tree with the prepend bb.tr.
    • Ex. bb.tr.vz

Definitions

Track Variables

 { "tr.n",    "Number of tracks",             "GetNTracks()" },
 { "tr.x",    "Track x coordinate (m)",       "fTracks.THaTrack.fX" },
 { "tr.y",    "Track x coordinate (m)",       "fTracks.THaTrack.fY" },
 { "tr.th",   "Tangent of track theta angle", "fTracks.THaTrack.fTheta" },
 { "tr.ph",   "Tangent of track phi angle",   "fTracks.THaTrack.fPhi" },
 { "tr.p",    "Track momentum (GeV)",         "fTracks.THaTrack.fP" },
 { "tr.flag", "Track status flag",            "fTracks.THaTrack.fFlag" },
 { "tr.chi2", "Track's chi2 from hits",       "fTracks.THaTrack.fChi2" },
 { "tr.ndof", "Track's NDoF",                 "fTracks.THaTrack.fNDoF" },
 { "tr.d_x",  "Detector x coordinate (m)",    "fTracks.THaTrack.fDX" },
 { "tr.d_y",  "Detector y coordinate (m)",    "fTracks.THaTrack.fDY" },
 { "tr.d_th", "Detector tangent of theta",    "fTracks.THaTrack.fDTheta" },
 { "tr.d_ph", "Detector tangent of phi",      "fTracks.THaTrack.fDPhi" },
 { "tr.r_x",  "Rotated x coordinate (m)",     "fTracks.THaTrack.fRX" },
 { "tr.r_y",  "Rotated y coordinate (m)",     "fTracks.THaTrack.fRY" },
 { "tr.r_th", "Rotated tangent of theta",     "fTracks.THaTrack.fRTheta" },
 { "tr.r_ph", "Rotated tangent of phi",       "fTracks.THaTrack.fRPhi" },
 { "tr.tg_y", "Target y coordinate",          "fTracks.THaTrack.fTY"},
 { "tr.tg_th", "Tangent of target theta angle", "fTracks.THaTrack.fTTheta"},
 { "tr.tg_ph", "Tangent of target phi angle",   "fTracks.THaTrack.fTPhi"},    
 { "tr.tg_dp", "Target delta",                "fTracks.THaTrack.fDp"},
 { "tr.px",    "Lab momentum x (GeV)",        "fTracks.THaTrack.GetLabPx()"},
 { "tr.py",    "Lab momentum y (GeV)",        "fTracks.THaTrack.GetLabPy()"},
 { "tr.pz",    "Lab momentum z (GeV)",        "fTracks.THaTrack.GetLabPz()"},
 { "tr.vx",    "Vertex x (m)",                "fTracks.THaTrack.GetVertexX()"},
 { "tr.vy",    "Vertex y (m)",                "fTracks.THaTrack.GetVertexY()"},
 { "tr.vz",    "Vertex z (m)",                "fTracks.THaTrack.GetVertexZ()"},
 { "tr.pathl", "Pathlength from tg to fp (m)","fTracks.THaTrack.GetPathLen()"},
 { "tr.time",  "Time of track@Ref Plane (s)", "fTracks.THaTrack.GetTime()"},
 { "tr.dtime", "uncer of time (s)",           "fTracks.THaTrack.GetdTime()"},
 { "tr.beta",  "Beta of track",               "fTracks.THaTrack.GetBeta()"},
 { "tr.dbeta", "uncertainty of beta",         "fTracks.THaTrack.GetdBeta()"},
 { "status",   "Bits of completed analysis stages", "fStagesDone" }

BigBite Tracking Variable Definitions

PDF describing BigBite track variables in the root tree.

HCal Variable Definitions

  • Last Updated: 01.30.23

Notes

  • These definitions from the following source files defined in SBS-offline. See github for more information.
    • SBSCalorimeter.cxx
    • SBSGenericDetector.cxx
  • All definitions below are accessed from the tree with the prepend sbs.hcal.
    • Ex. sbs.hcal.clus_blk.atime

Definitions

ADC Variables

 { "adcrow", "Row for block in data vectors",  "fGood.ADCrow" }),
 { "adccol", "Col for block in data vectors",  "fGood.ADCcol" }),
 { "adcelemID", "Element ID for block in data vectors",  "fGood.ADCelemID" }),
 { "adclayer", "Layer for block in data vectors",  "fGood.ADClayer" }),
 { "ped", "Pedestal for block in data vectors",  "fGood.ped" }),
 { "a","ADC integral", "fGood.a"} );
 { "a_mult","ADC # hits in channel", "fGood.a_mult"} );
 { "a_p","ADC integral - ped", "fGood.a_p"} );
 { "a_c","(ADC integral - ped)*gain", "fGood.a_c"} );
 { "a_amp","ADC pulse amplitude", "fGood.a_amp"} );
 { "a_amp_p","ADC pulse amplitude -ped", "fGood.a_amp_p"} );
 { "a_amp_c","(ADC pulse amplitude -ped)*gain*AmpToIntRatio", "fGood.a_amp_p"} );
 { "a_amptrig_p","(ADC pulse amplitude -ped)*AmpToIntRatio", "fGood.a_amp_p"} );
 { "a_amptrig_c","(ADC pulse amplitude -ped)*gain*AmpToIntRatio", "fGood.a_amp_p"} );
 { "a_time","ADC pulse time", "fGood.a_time"} );
 { "hits.a",   "All ADC inntegrals",  "fRaw.a" });
 { "hits.a_amp",   "All ADC amplitudes",  "fRaw.a_amp" });
 { "hits.a_time",   "All ADC pulse times",  "fRaw.a_time" });

ADC Waveform Variables

 { "samps_idx", "Index in samples vector for given row-col module", "fGood.sidx" });
 { "nsamps" , "Number of samples for given row-col", "fGood.nsamps"});
 { "samps", "Calibrated ADC samples",  "fGood.samps" });
 { "samps_elemID", "Calibrated ADC samples",  "fGood.samps_elemID" });

TDC Variables

 { "tdcrow", "Row for block in data vectors",  "fGood.TDCrow" }),
 { "tdccol", "Col for block in data vectors",  "fGood.TDCcol" }),
 { "tdcelemID", "Element ID for block in data vectors",  "fGood.TDCelemID" }),
 { "tdclayer", "Layer for block in data vectors",  "fGood.TDClayer" }),
 { "tdc", "Calibrated TDC value", "fGood.t" });
 { "tdc_mult", "TDC # of hits per channel", "fGood.t_mult" });
 { "tdc_te", "Calibrated TDC trailing info", "fGood.t_te" });
 { "tdc_tot", "Time Over Threshold", "fGood.t_ToT" });
 { "hits.TDCelemID",   "All TDC Element ID",  "fRaw.TDCelemID" });
 { "hits.t",   "All TDC leading edge times",  "fRaw.t" });
 { "hits.t_te",   "All TDC trailing edge times",  "fRaw.t_te" });
 { "hits.t_tot",  "All TDC Time-over-threshold",  "fRaw.t_ToT" });

Cluster Variables

 { "nclus", "Number of clusters meeting threshold", "fNclus" },
 { "e",      "Energy (MeV) of largest cluster",    "GetE()" },
 { "e_c",    "Corrected Energy (MeV) of largest cluster",    "GetECorrected()" },
 { "atimeblk", "ADC time of highest energy block in the largest cluster", "GetAtime()" },
 { "tdctimeblk", "TDC time of highest energy block in the largest cluster", "GetTDCtime()" },
 { "eblk",   "Energy (MeV) of highest energy block in the largest cluster",    "GetEBlk()" },
 { "eblk_c", "Corrected Energy (MeV) of highest energy block in the largest cluster",    "GetEBlkCorrected()" },
 { "rowblk", "Row of block with highest energy in the largest cluster",    "GetRow()" },
 { "colblk", "Col of block with highest energy in the largest cluster",    "GetCol()" },
 { "x",      "x-position (mm) of largest cluster", "GetX()" },
 { "y",      "y-position (mm) of largest cluster", "GetY()" },
 { "nblk",   "Number of blocks in the largest cluster",    "GetNblk()" },
 { "idblk",  "Logic number of block with highest energy in cluster",    "GetBlkID()" },

Cluster Member Variables

 { "clus.e", "Energy of cluster", "fOutclus.e"},
 { "clus.atime", "ADC time of cluster", "fOutclus.atime"},
 { "clus.tdctime", "TDC time of cluster", "fOutclus.tdctime"},
 { "clus.e_c","Energy calibrated of cluster", "fOutclus.e_c"},
 { "clus.x", "x-position of cluster", "fOutclus.x"},
 { "clus.y", "y-position of cluster", "fOutclus.y"},
 { "clus.row","block row in cluster with highest energy",    "fOutclus.row" },
 { "clus.col","block col in cluster with highest energy",    "fOutclus.col" },
 { "clus.id","block number in cluster",    "fOutclus.id" },
 { "clus.nblk","number of blocks in cluster",    "fOutclus.n" },
 { "clus.eblk", "Energy of block with highest energy in cluster", "fOutclus.blk_e"},
 { "clus.eblk_c","Energy calibrated of block with highest energy in cluster", "fOutclus.blk_e_c"},

Primary Cluster Member Variables

 { "clus_blk.e", "Energy of block in main cluster", "fMainclusblk.e"},
 { "clus_blk.e_c","Energy calibrated of block in main cluster", "fMainclusblk.e_c"},
 { "clus_blk.x", "x-position of block in main cluster", "fMainclusblk.x"},
 { "clus_blk.y", "y-position of block in main cluster", "fMainclusblk.y"},
 { "clus_blk.row","block row in main cluster",    "fMainclusblk.row" },
 { "clus_blk.atime","block ADC time in main cluster",    "fMainclusblk.atime" },
 { "clus_blk.tdctime","block TDC time in main cluster",    "fMainclusblk.tdctime" },
 { "clus_blk.col","block col in main cluster",    "fMainclusblk.col" },
 { "clus_blk.id","block number in main cluster",    "fMainclusblk.id" },

"Good" Block Variables

 { "goodblock.e", "Energy of good blocks", "fGoodBlocks.e"},
 { "goodblock.atime", "Energy of good blocks", "fGoodBlocks.ADCTime"},
 { "goodblock.tdctime", "Energy of good blocks", "fGoodBlocks.TDCTime"},
 { "goodblock.row", "Row of good blocks", "fGoodBlocks.row"},
 { "goodblock.col", "Col of good blocks", "fGoodBlocks.col"},
 { "goodblock.x", "x pos (m) of good blocks", "fGoodBlocks.x"},
 { "goodblock.y", "y pos (m) of good blocks", "fGoodBlocks.y"},
 { "goodblock.id", "Element ID of good blocks", "fGoodBlocks.id"},

BBCal (Shower + PreShower) Variable Definitions

Notes

  • These definitions from the following source files defined in SBS-offline. See github for more information.
    • SBSCalorimeter.cxx
    • SBSGenericDetector.cxx
  • All definitions below are accessed from the tree with the prepend bb.sh. for Shower and bb.ps. for PreShower
    • Ex. bb.sh.e

Definitions

ADC Variables

 { "adcrow", "Row for block in data vectors",  "fGood.ADCrow" }),
 { "adccol", "Col for block in data vectors",  "fGood.ADCcol" }),
 { "adcelemID", "Element ID for block in data vectors",  "fGood.ADCelemID" }),
 { "adclayer", "Layer for block in data vectors",  "fGood.ADClayer" }),
 { "ped", "Pedestal for block in data vectors",  "fGood.ped" }),
 { "a","ADC integral", "fGood.a"} );
 { "a_mult","ADC # hits in channel", "fGood.a_mult"} );
 { "a_p","ADC integral - ped", "fGood.a_p"} );
 { "a_c","(ADC integral - ped)*gain", "fGood.a_c"} );
 { "a_amp","ADC pulse amplitude", "fGood.a_amp"} );
 { "a_amp_p","ADC pulse amplitude -ped", "fGood.a_amp_p"} );
 { "a_amp_c","(ADC pulse amplitude -ped)*gain*AmpToIntRatio", "fGood.a_amp_p"} );
 { "a_amptrig_p","(ADC pulse amplitude -ped)*AmpToIntRatio", "fGood.a_amp_p"} );
 { "a_amptrig_c","(ADC pulse amplitude -ped)*gain*AmpToIntRatio", "fGood.a_amp_p"} );
 { "a_time","ADC pulse time", "fGood.a_time"} );
 { "hits.a",   "All ADC inntegrals",  "fRaw.a" });
 { "hits.a_amp",   "All ADC amplitudes",  "fRaw.a_amp" });
 { "hits.a_time",   "All ADC pulse times",  "fRaw.a_time" });

ADC Waveform Variables

 { "samps_idx", "Index in samples vector for given row-col module", "fGood.sidx" });
 { "nsamps" , "Number of samples for given row-col", "fGood.nsamps"});
 { "samps", "Calibrated ADC samples",  "fGood.samps" });
 { "samps_elemID", "Calibrated ADC samples",  "fGood.samps_elemID" });

Cluster Variables

 { "nclus", "Number of clusters meeting threshold", "fNclus" },
 { "e",      "Energy (GeV) of largest cluster",    "GetE()" },
 //{ "e_c",    "Corrected Energy (GeV) of largest cluster",    "GetECorrected()" },
 { "againblk",    "ADC gain coeff. of highest energy block in the largest cluster",  "GetAgain()" },
 { "atimeblk", "ADC time of highest energy block in the largest cluster", "GetAtime()" },
 //{ "tdctimeblk", "TDC time of highest energy block in the largest cluster", "GetTDCtime()" },
 { "eblk",   "Energy (GeV) of highest energy block in the largest cluster",    "GetEBlk()" },
 //{ "eblk_c", "Corrected Energy (GeV) of highest energy block in the largest cluster",    "GetEBlkCorrected()" },
 { "rowblk", "Row of block with highest energy in the largest cluster",    "GetRow()" },
 { "colblk", "Col of block with highest energy in the largest cluster",    "GetCol()" },
 { "x",      "x-position (m) of largest cluster", "GetX()" },
 { "y",      "y-position (m) of largest cluster", "GetY()" },
 { "nblk",   "Number of blocks in the largest cluster",    "GetNblk()" },
 { "idblk",  "Logic number of block with highest energy in cluster",    "GetBlkID()" },

Cluster Member Variables

 { "clus.e", "Energy of cluster", "fOutclus.e"},
 { "clus.atime", "ADC time of block in cluster with highest energy", "fOutclus.atime"},
 //{ "clus.tdctime", "TDC time of block in cluster with highest energy", "fOutclus.tdctime"},
 //{ "clus.e_c","Energy calibrated of cluster", "fOutclus.e_c"},
 { "clus.again","ADC gain of block in cluster with highest energy", "fOutclus.again"},
 { "clus.x", "x-position of cluster", "fOutclus.x"},
 { "clus.y", "y-position of cluster", "fOutclus.y"},
 { "clus.row","block row in cluster with highest energy",    "fOutclus.row" },
 { "clus.col","block col in cluster with highest energy",    "fOutclus.col" },
 { "clus.id","block number of highest energy block in cluster",    "fOutclus.id" },
 { "clus.nblk","number of blocks in cluster",    "fOutclus.n" },
 { "clus.eblk", "Energy of block with highest energy in cluster", "fOutclus.blk_e"},
 //{ "clus.eblk_c","Energy calibrated of block with highest energy in cluster", "fOutclus.blk_e_c"},

Primary Cluster Member Variables

 { "clus_blk.e", "Energy of block in main cluster", "fMainclusblk.e"},
 //{ "clus_blk.e_c","Energy calibrated of block in main cluster", "fMainclusblk.e_c"},
 { "clus_blk.again","ADC gain coeff. of block in main cluster", "fMainclusblk.again"},
 { "clus_blk.x", "x-position of block in main cluster", "fMainclusblk.x"},
 { "clus_blk.y", "y-position of block in main cluster", "fMainclusblk.y"},
 { "clus_blk.row","block row in main cluster",    "fMainclusblk.row" },
 { "clus_blk.atime","block ADC time in main cluster",    "fMainclusblk.atime" },
 //{ "clus_blk.tdctime","block TDC time in main cluster",    "fMainclusblk.tdctime" },
 { "clus_blk.col","block col in main cluster",    "fMainclusblk.col" },
 { "clus_blk.id","block number in main cluster",    "fMainclusblk.id" },

"Good" Block Variables

 { "goodblock.e", "Energy of good blocks", "fGoodBlocks.e"},
 { "goodblock.atime", "Energy of good blocks", "fGoodBlocks.ADCTime"},
 //{ "goodblock.tdctime", "Energy of good blocks", "fGoodBlocks.TDCTime"},
 { "goodblock.row", "Row of good blocks", "fGoodBlocks.row"},
 { "goodblock.col", "Col of good blocks", "fGoodBlocks.col"},
 { "goodblock.x", "x pos (m) of good blocks", "fGoodBlocks.x"},
 { "goodblock.y", "y pos (m) of good blocks", "fGoodBlocks.y"},
 { "goodblock.id", "Element ID of good blocks", "fGoodBlocks.id"},

GEM Variable Definitions

Notes

  • Definitions are found in the following scripts
    • SBSGEMSpectrometerTracker.cxx
    • SBSGEMModule.cxx
  • All definitions below are accessed from the tree with the prepend bb.gem.

Definitions

Track Variables

  • These variables come from SBSGEMSpectrometerTracker.cxx
   { "track.ntrack", "number of tracks found", "fNtracks_found" },
   { "track.nhits", "number of hits on track", "fNhitsOnTrack" },
   { "track.x", "Track X (TRANSPORT)", "fXtrack" }, //might be redundant with spectrometer variables, but probably needed for "non-tracking" version
   { "track.y", "Track Y (TRANSPORT)", "fYtrack" },
   { "track.xp", "Track dx/dz (TRANSPORT)", "fXptrack" },
   { "track.yp", "Track dy/dz (TRANSPORT)", "fYptrack" },
   { "track.chi2ndf", "Track Chi2/ndf", "fChi2Track" },
   { "track.besttrack", "Index of 'best' track", "fBestTrackIndex" },

Cluster Variables

  • These variables come from SBSGEMSpectrometerTracker.cxx


   { "hit.ngoodhits", "Total number of hits on all found tracks", "fNgoodhits" },
   { "hit.trackindex", "Index of track containing this hit", "fHitTrackIndex" },
   { "hit.module", "Module index of this hit", "fHitModule" },
   { "hit.layer", "Layer index of this hit", "fHitLayer" },
   { "hit.nstripu", "number of U strips on this hit", "fHitNstripsU" },
   { "hit.nstripv", "number of V strips on this hit", "fHitNstripsV" },
   { "hit.ustripmax", "index of u strip with max ADC in this hit", "fHitUstripMax" },
   { "hit.vstripmax", "index of v strip with max ADC in this hit", "fHitVstripMax" },
   { "hit.ustriplo", "index of minimum u strip in this hit", "fHitUstripLo" },
   { "hit.vstriplo", "index of minimum v strip in this hit", "fHitVstripLo" },
   { "hit.ustriphi", "index of maximum u strip in this hit", "fHitUstripHi" },
   { "hit.vstriphi", "index of maximum v strip in this hit", "fHitVstripHi" },
   { "hit.u", "reconstructed hit position along u", "fHitUlocal" },
   { "hit.v", "reconstructed hit position along v", "fHitVlocal" },
   { "hit.xlocal", "reconstructed local x position of hit (internal module coordinates)", "fHitXlocal" },
   { "hit.ylocal", "reconstructed local y position of hit (internal module coordinates)", "fHitYlocal" },
   { "hit.xglobal", "reconstructed global x position of hit", "fHitXglobal" },
   { "hit.yglobal", "reconstructed global y position of hit", "fHitYglobal" },
   { "hit.zglobal", "reconstructed global z position of hit", "fHitZglobal" },
   { "hit.umoment", "U cluster moment (consult source code or A. Puckett for definition)", "fHitUmoment" },
   { "hit.vmoment", "V cluster moment (consult source code or A. Puckett for definition)", "fHitVmoment" },
   { "hit.usigma", "U cluster rms", "fHitUsigma" },
   { "hit.vsigma", "V cluster rms", "fHitVsigma" },
   { "hit.residu", "u hit residual with fitted track (inclusive method)", "fHitResidU" },
   { "hit.residv", "v hit residual with fitted track (inclusive method)", "fHitResidV" },
   { "hit.eresidu", "u hit residual with fitted track (exclusive method)", "fHitEResidU" },
   { "hit.eresidv", "v hit residual with fitted track (exclusive method)", "fHitEResidV" },
   { "hit.ADCU", "cluster ADC sum, U strips", "fHitUADC" },
   { "hit.ADCV", "cluster ADC sum, V strips", "fHitVADC" },
   { "hit.ADCavg", "cluster ADC average", "fHitADCavg" },
   { "hit.ADCmaxstripU", "ADC sum of max U strip", "fHitUADCmaxstrip" },
   { "hit.ADCmaxstripV", "ADC sum of max V strip", "fHitVADCmaxstrip" },
   { "hit.ADCmaxsampU", "max sample of max U strip", "fHitUADCmaxsample" },
   { "hit.ADCmaxsampV", "max sample of max V strip", "fHitVADCmaxsample" },
   { "hit.ADCmaxsampUclust", "max U cluster-summed ADC time sample", "fHitUADCmaxclustsample" },
   { "hit.ADCmaxsampVclust", "max V cluster-summed ADC time sample", "fHitVADCmaxclustsample" },
   { "hit.ADCasym", "Hit ADC asymmetry: (ADCU - ADCV)/(ADCU + ADCV)", "fHitADCasym" },
   { "hit.Utime", "cluster timing based on U strips", "fHitUTime" },
   { "hit.Vtime", "cluster timing based on V strips", "fHitVTime" },
   { "hit.UtimeMaxStrip", "cluster timing based on U strips", "fHitUTimeMaxStrip" },
   { "hit.VtimeMaxStrip", "cluster timing based on V strips", "fHitVTimeMaxStrip" },
   { "hit.deltat", "cluster U time - V time", "fHitDeltaT" },
   { "hit.Tavg", "hit T average", "fHitTavg" },
   { "hit.isampmaxUclust", "peak time sample in cluster-summed U ADC samples", "fHitIsampMaxUclust" },
   { "hit.isampmaxVclust", "peak time sample in cluster-summed V ADC samples", "fHitIsampMaxVclust" },
   { "hit.isampmaxUstrip", "peak time sample in max U strip", "fHitIsampMaxUstrip" },
   { "hit.isampmaxVstrip", "peak time sample in max V strip", "fHitIsampMaxVstrip" },
   { "hit.ccor_clust", "correlation coefficient between cluster-summed U and V samples", "fHitCorrCoeffClust" },
   { "hit.ccor_strip", "correlation coefficient between U and V samples on strips with max ADC", "fHitCorrCoeffMaxStrip" },
   { "hit.ENABLE_CM_U", "Enable CM flag for max U strip in this hit", "fHitU_ENABLE_CM" },
   { "hit.ENABLE_CM_V", "Enable CM flag for max V strip in this hit", "fHitV_ENABLE_CM" },
   { "hit.CM_GOOD_U", "Enable CM flag for max U strip in this hit", "fHitU_CM_GOOD" },
   { "hit.CM_GOOD_V", "Enable CM flag for max V strip in this hit", "fHitV_CM_GOOD" },
   { "hit.BUILD_ALL_SAMPLES_U", "Enable CM flag for max U strip in this hit", "fHitU_BUILD_ALL_SAMPLES" },
   { "hit.BUILD_ALL_SAMPLES_V", "Enable CM flag for max V strip in this hit", "fHitV_BUILD_ALL_SAMPLES" },
   { "hit.ADCfrac0_Umax", "Max U strip ADC0/ADCsum", "fHitADCfrac0_MaxUstrip" },
   { "hit.ADCfrac1_Umax", "Max U strip ADC1/ADCsum", "fHitADCfrac1_MaxUstrip" },
   { "hit.ADCfrac2_Umax", "Max U strip ADC2/ADCsum", "fHitADCfrac2_MaxUstrip" },
   { "hit.ADCfrac3_Umax", "Max U strip ADC3/ADCsum", "fHitADCfrac3_MaxUstrip" },
   { "hit.ADCfrac4_Umax", "Max U strip ADC4/ADCsum", "fHitADCfrac4_MaxUstrip" },
   { "hit.ADCfrac5_Umax", "Max U strip ADC5/ADCsum", "fHitADCfrac5_MaxUstrip" },
   { "hit.ADCfrac0_Vmax", "Max V strip ADC0/ADCsum", "fHitADCfrac0_MaxVstrip" },
   { "hit.ADCfrac1_Vmax", "Max V strip ADC1/ADCsum", "fHitADCfrac1_MaxVstrip" },
   { "hit.ADCfrac2_Vmax", "Max V strip ADC2/ADCsum", "fHitADCfrac2_MaxVstrip" },
   { "hit.ADCfrac3_Vmax", "Max V strip ADC3/ADCsum", "fHitADCfrac3_MaxVstrip" },
   { "hit.ADCfrac4_Vmax", "Max V strip ADC4/ADCsum", "fHitADCfrac4_MaxVstrip" },
   { "hit.ADCfrac5_Vmax", "Max V strip ADC5/ADCsum", "fHitADCfrac5_MaxVstrip" },
   { "nlayershit", "number of layers with any strip fired", "fNlayers_hit" },
   { "nlayershitu", "number of layers with any U strip fired", "fNlayers_hitU" },
   { "nlayershitv", "number of layers with any V strip fired", "fNlayers_hitV" },
   { "nlayershituv", "number of layers with at least one 2D hit", "fNlayers_hitUV" },
   { "nstripsu_layer", "total number of U strips fired by layer", "fNstripsU_layer" },
   { "nstripsv_layer", "total number of V strips fired by layer", "fNstripsV_layer" },
   { "nclustu_layer", "total number of U clusters by layer", "fNclustU_layer" },
   { "nclustv_layer", "total number of V clusters by layer", "fNclustV_layer" },
   { "n2Dhit_layer", "total_number of 2D hits by layer", "fN2Dhit_layer" },


  • These variables come from SBSGEMModule.cxx
   { "clust.nclustu",   "Number of clusters in u",   "fNclustU" },
   { "clust.clustu_strips",   "u clusters strip multiplicity",   "fUclusters.nstrips" },
   { "clust.clustu_pos",   "u clusters position",   "fUclusters.hitpos_mean" },
   { "clust.clustu_adc",   "u clusters adc sum",   "fUclusters.clusterADCsum" },
   { "clust.clustu_time",   "u clusters time",   "fUclusters.t_mean" },
   { "clust.nclustv",   "Number of clusters in v",   "fNclustV" },
   { "clust.clustv_strips",   "v clusters strip multiplicity",   "fVclusters.nstrips" },
   { "clust.clustv_pos",   "v clusters position",   "fVclusters.hitpos_mean" },
   { "clust.clustv_adc",   "v clusters adc sum",   "fVclusters.clusterADCsum" },
   { "clust.clustv_time",   "v clusters time",   "fVclusters.t_mean" },
   { "hit.nhits2d",   "Number of 2d hits",   "fN2Dhits" },
   { "hit.hitx",   "local X coordinate of hit",   "fHits.xhit" },
   { "hit.hity",   "local Y coordinate of hit",   "fHits.yhit" },
   { "hit.hitxg",   "transport X coordinate of hit",   "fHits.xghit" },
   { "hit.hityg",   "transport Y coordinate of hit",   "fHits.yghit" },
   { "hit.hitADCasym",   "hit ADC asymmetry (ADCU-ADCV)/2",   "fHits.ADCasym" },
   { "hit.hitADCavg",  "(ADCU+ADCV)/2", "fHits.Ehit" },
   { "hit.hitTdiff",   "hit time difference (u-v)",   "fHits.tdiff" },
   { "hit.hitTavg",   "average time of 2D hit", "fHits.thitcorr" },
   { "hit.hit_iuclust", "index in u cluster array", "fHits.iuclust" },
   { "hit.hit_ivclust", "index in v cluster array", "fHits.ivclust" },
   { "hit.ontrack", "hit is on track", "fHits.ontrack" },

Strip Variables

  • These variables come from SBSGEMModule.cxx


   { "strip.nstripsfired", "Number of strips fired", kUInt, 0, &fNstrips_hit },
   { "strip.nstrips_keep", "Number of fired strips passing basic timing cuts", kUInt, 0, &fNstrips_keep },
   { "strip.nstrips_keepU", "Number of U/X strips passing basic timing cuts", kUInt, 0, &fNstrips_keepU },
   { "strip.nstrips_keepV", "Number of V/Y strips passing basic timing cuts", kUInt, 0, &fNstrips_keepV },
   { "strip.nstrips_keep_lmax", "Number of strips passing local max thresholds and basic timing cuts", kUInt, 0, &fNstrips_keep_lmax },
   { "strip.nstrips_keep_lmaxU", "Number of U/X strips passing local max thresholds and basic timing cuts", kUInt, 0, &fNstrips_keep_lmaxU },
   { "strip.nstrips_keep_lmaxV", "Number of V/Y strips passing local max thresholds and basic timing cuts", kUInt, 0, &fNstrips_keep_lmaxV },
   { "strip.istrip", "strip index", kUInt, 0, &(fStrip[0]), &fNstrips_hit },
   { "strip.IsU", "U strip?", kUInt, 0, &(fStripIsU[0]), &fNstrips_hit },
   { "strip.IsV", "V strip?", kUInt, 0, &(fStripIsV[0]), &fNstrips_hit },
   { "strip.ADCsamples", "ADC samples (index = isamp+Nsamples*istrip)", kDouble, 0, &(fADCsamples1D[0]), &fNdecoded_ADCsamples },
   { "strip.rawADCsamples", "raw ADC samples (no baseline subtraction)", kInt, 0, &(fRawADCsamples1D[0]), &fNdecoded_ADCsamples },
   { "strip.ADCsum", "Sum of ADC samples on a strip", kDouble, 0, &(fADCsums[0]), &fNstrips_hit },
   { "strip.isampmax", "sample in which max ADC occurred on a strip", kUInt, 0, &(fMaxSamp[0]), &fNstrips_hit },
   { "strip.ADCmax", "Value of max ADC sample on a strip", kDouble, 0, &(fADCmax[0]), &fNstrips_hit },
   { "strip.Tmean", "ADC-weighted mean strip time", kDouble, 0, &(fTmean[0]), &fNstrips_hit },
   { "strip.Tsigma", "ADC-weighted rms strip time", kDouble, 0, &(fTsigma[0]), &fNstrips_hit },
   { "strip.Tcorr", "Corrected strip time", kDouble, 0, &(fTcorr[0]), &fNstrips_hit },
   { "strip.Tfit", "Fitted strip time", kDouble, 0, &(fStripTfit[0]), &fNstrips_hit },
   { "strip.Tdiff", "time diff. wrt max strip in cluster (or perhaps cluster tmean)", kDouble, 0, &(fStripTdiff[0]), &fNstrips_hit },
   { "strip.TSchi2", "chi2 of strip pulse shape (time samples) wrt average good strip pulse shape", kDouble, 0, &(fStripTSchi2[0]), &fNstrips_hit },
   { "strip.CorrCoeff", "Correlation coefficient of strip wrt max strip on cluster (or perhaps cluster tmean)", kDouble, 0, &(fStripCorrCoeff[0]), &fNstrips_hit },
   { "strip.itrack", "Index of track containing this strip (-1 if not on any track)", kInt, 0, &(fStripTrackIndex[0]), &fNstrips_hit },
   { "strip.ontrack", "Is this strip on any track (0/1)?", kUInt, 0, &(fStripOnTrack[0]), &fNstrips_hit },
   { "strip.ADCavg", "average of ADC samples on a strip", kDouble, 0, &(fStripADCavg[0]), &fNstrips_hit },
   { "strip.ENABLE_CM", "online common-mode enabled?", kUInt, 0, &(fStrip_ENABLE_CM[0]), &fNstrips_hit },
   { "strip.CM_GOOD", "common-mode out of range? (online failed)", kUInt, 0, &(fStrip_CM_GOOD[0]), &fNstrips_hit },
   { "strip.BUILD_ALL_SAMPLES", "online or offline zero suppression", kUInt, 0, &(fStrip_BUILD_ALL_SAMPLES[0]), &fNstrips_hit },
   { "strip.ontrackU", "U strip on track", kUInt, 0, &(fStripUonTrack[0]), &fNstrips_hit },
   { "strip.ontrackV", "V strip on track", kUInt, 0, &(fStripVonTrack[0]), &fNstrips_hit },


Timing Variables

  • These variables come from SBSGEMModule.cxx


   { "time.T0_by_APV", "Coarse MPD timestamp of first event", "fT0_by_APV" },
   { "time.Tref_coarse", "Reference coarse MPD time stamp for this event", "fTref_coarse" },
   { "time.Tcoarse_by_APV", "Coarse MPD timestamp by APV relative to Tref_coarse", "fTcoarse_by_APV" },
   { "time.Tfine_by_APV", "Fine MPD timestamp by APV", "fTfine_by_APV" },
   { "time.EventCount_by_APV", "MPD event counter by APV (these should all agree in any one event)", "fEventCount_by_APV" },
   { "time.T_ns_by_APV", "Time stamp in ns relative to coarse T_ref", "fTimeStamp_ns_by_APV" },

Single Arm Electron Kinematics Variable Definitions

Notes

  • These are presented as-is pending better documentation.
  • All definitions below are accessed from the tree with the prepend e.kine
    • Ex. e.kine.nu

Kinematical Variables

   { "W2", "W^2, Invariant Mass Transfer Squared", "" },
   { "Q2", "Q^2, Inverse Momentum Transfer Squared", "" },
   { "angle", "e' angle wrt beamline", "" },
   { "epsilon", "Epsilon", "" },
   { "nu", "Scattered nucleon momentum", "" },
   { "omega", "", "" },
   { "ph_q", "Virtual photon momentum", "" },
   { "q3m", "", "" },
   { "q_x", "Q x-component", "" },
   { "q_y", "Q y-component", "" },
   { "q_z", "Q z-component", "" },
   { "th_q", "Q theta wrt beamline", "" },
   { "x_bj", "Bjorken X", "" },

Timing Hodoscope Variable Definitions

  • Last Updated: 01.30.23

Notes

  • These definitions from the following source files defined in SBS-offline. See github for more information.
    • SBSTimingHodoscope.cxx
    • SBSGenericDetector.cxx
  • All definitions below are accessed from the tree with the prepend bb.hodotdc.
    • Ex. bb.hodotdc.tdc_tot

Definitions

Scint. Bar TDC Variables

   { "bar.ngoodbars",          "Number of good bars",                  "GetGoodBarsSize()"},
   { "bar.tdc.id",             "TDC Hit Bar ID",                       "fGoodBarIDsTDC"},
   { "bar.tdc.meantime",       "Bar Mean Time [ns]",                   "fGoodBarTDCmean"},
   { "bar.tdc.timediff",       "Bar Time Diff [ns]",                   "fGoodBarTDCdiff"},
   { "bar.tdc.timehitpos",     "Bar Time Hit pos from L [m]",          "fGoodBarTDCpos"},
   { "bar.tdc.vpos",           "Bar vertical position [m]",            "fGoodBarTDCvpos"},
   { "bar.tdc.L.le",           "Left pmt time LE [ns]",                "fGoodBarTDCLle"},
   { "bar.tdc.L.leW",          "Left pmt time LE walk corr [ns]",      "fGoodBarTDCLleW"},
   { "bar.tdc.L.te",           "Left pmt time TE [ns]",                "fGoodBarTDCLte"},
   { "bar.tdc.L.teW",          "Left pmt time TE walk corr [ns]",      "fGoodBarTDCLteW"},
   { "bar.tdc.L.tot",          "Left pmt tot [ns]",                    "fGoodBarTDCLtot"},
   { "bar.tdc.L.totW",         "Left pmt tot walk corr [ns]",          "fGoodBarTDCLtotW"},
   { "bar.tdc.R.le",           "Right pmt time LE [ns]",               "fGoodBarTDCRle"},
   { "bar.tdc.R.leW",          "Right pmt time LE walk corr [ns]",     "fGoodBarTDCRleW"},
   { "bar.tdc.R.te",           "Right pmt time TE [ns]",               "fGoodBarTDCRte"},
   { "bar.tdc.R.teW",          "Right pmt time TE walk corr [ns[",     "fGoodBarTDCRteW"},
   { "bar.tdc.R.tot",          "Right pmt tot [ns[",                   "fGoodBarTDCRtot"},
   { "bar.tdc.R.totW",         "Right pmt tot walk corr [ns]",         "fGoodBarTDCRtotW"},

Scint. Bar ADC Variables

   { "bar.adc.id",             "ADC Hit Bar ID",                       "fGoodBarIDsADC"},
   { "bar.adc.mean",           "ADC Hit Bar Mean [bins]",              "fGoodBarADCmean"},
   { "bar.adc.L.a",            "Left ADC [bins]",                      "fGoodBarADCLa"},
   { "bar.adc.L.ap",           "Left ADC ped corr [bins]",             "fGoodBarADCLap"},
   { "bar.adc.L.ac",           "Left ADC ped corr [GeV]",              "fGoodBarADCLac"},
   { "bar.adc.R.a",            "Right ADC [bins]",                     "fGoodBarADCRa"},
   { "bar.adc.R.ap",           "Right ADC ped corr [bins]",            "fGoodBarADCRap"},
   { "bar.adc.R.ac",           "Right ADC ped corr [GeV]",             "fGoodBarADCRac"},

All Cluster Variables

   { "allclus.size",           "cluster size",                         "fOutClus.n"},
   { "allclus.id",             "cluster max bar id",                   "fOutClus.id" },
   { "allclus.xmean",          "cluster mean X",                       "fOutClus.x"},
   { "allclus.ymean",          "cluster mean Y",                       "fOutClus.y"},
   { "allclus.tmean",          "cluster mean T",                       "fOutClus.t"},
   { "allclus.totmean",        "cluster mean ToT",                     "fOutClus.tot"},
   { "allclus.tdiff",          "cluster max bar tdiff",                "fOutClus.tdiff"},
   { "allclus.itrack",         "track index",                          "fOutClus.trackindex"},

Cluster Bar Variables

   { "clus.bar.tdc.id",        "main clus TDC Hit Bar ID",             "fMainClusBars.id"},
   { "clus.bar.tdc.meantime",  "main clus Bar Mean Time [ns]",         "fMainClusBars.t"},
   { "clus.bar.tdc.meantot",   "main clus Bar Mean ToT [ns]",          "fMainClusBars.tot"},
   { "clus.bar.tdc.timediff",  "main clus Bar Time Diff [ns]",         "fMainClusBars.tdiff"},
   { "clus.bar.tdc.timehitpos","main clus Bar Time Hit pos from L [m]","fMainClusBars.y"},
   { "clus.bar.tdc.vpos",      "main clus Bar vertical position [m]",  "fMainClusBars.x"},
   { "clus.bar.tdc.itrack",    "main clus Bar track index",            "fMainClusBars.trackindex" },

Cluster Variables

   { "nclus",                  "number of clusters",                   "GetNClusters()"},
   { "clus.id",                "cluster max bar id",                   "fMainClus.id"},
   { "clus.size",              "cluster size",                         "fMainClus.n"},
   { "clus.xmean",             "cluster mean X",                       "fMainClus.x"},
   { "clus.ymean",             "cluster mean Y",                       "fMainClus.y"},
   { "clus.tmean",             "cluster mean T",                       "fMainClus.t"},
   { "clus.totmean",           "cluster mean ToT",                     "fMainClus.tot"},
   { "clus.tdiff",             "cluster max bar tdiff",                "fMainClus.tdiff"},
   { "clus.trackindex",        "cluster track index",                  "fMainClus.trackindex"},

Generic Detector TDC Variables

   { "tdcrow",                 "Row for block in data vectors",        "fGood.TDCrow" }),
   { "tdccol",                 "Col for block in data vectors",        "fGood.TDCcol" }),
   { "tdcelemID",              "Element ID for block in data vectors", "fGood.TDCelemID" }),
   { "tdclayer",               "Layer for block in data vectors",      "fGood.TDClayer" }),
   { "tdc",                    "Calibrated TDC value",                 "fGood.t" });
   { "tdc_mult",               "TDC # of hits per channel",            "fGood.t_mult" });
   { "tdc_te",                 "Calibrated TDC trailing info",         "fGood.t_te" });
   { "tdc_tot",                "Time Over Threshold",                  "fGood.t_ToT" });
   { "hits.TDCelemID",         "All TDC Element ID",                   "fRaw.TDCelemID" });
   { "hits.t",                 "All TDC leading edge times",           "fRaw.t" });
   { "hits.t_te",              "All TDC trailing edge times",          "fRaw.t_te" });
   { "hits.t_tot",             "All TDC Time-over-threshold",          "fRaw.t_ToT" });
   { "nhits",                  "Nhits",                                "fNhits" },
   { "nrefhits",               "Number of reference time hits",        "fNRefhits" },
   { "ngoodTDChits",           "NGoodTDChits",                         "fNGoodTDChits" },
   { "ngoodADChits",           "NGoodADChits",                         "fNGoodADChits" },


Event Class Definitions

Notes

  • These definitions are implemented by default for root trees via the event class and can be viewed in more detail here.
  • All definitions below are accessed from the tree with the prepend fEvtHdr.
    • Ex. fEvtHdr.fEvtNum

Definitions

   { "fEvtNum", "Index of event number", N/A },
   { "fRun", "Index for run", N/A },