Revert the sign of deltaZ correction in vdrift to Marian's version

sevdokim · Jun 7, 2016 · 53b78da · 53b78da
1 parent b60715c
commit 53b78da
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Showing 2 changed files with 2 additions and 4 deletions.
diff --git a/TPC/TPCcalib/AliTPCDcalibRes.cxx b/TPC/TPCcalib/AliTPCDcalibRes.cxx
@@ -2834,8 +2834,7 @@ void AliTPCDcalibRes::MakeVDriftOCDB(TString targetOCDBstorage)
   AliTPCParam* param = AliTPCcalibDB::Instance()->GetParameters(); // just to get Vdrift
   //
   for (Int_t ipoint=0; ipoint<=1; ipoint++){
-    //    deltaZ[ipoint]=-(*fVDriftParam)[1];  // unit OK
-    deltaZ[ipoint]=(*fVDriftParam)[1];  // unit OK  !!! No - sign, it is subtracted from (Zmax-drift)
+    deltaZ[ipoint]=-(*fVDriftParam)[1];  // unit OK  
     vdgy[ipoint]=-(*fVDriftParam)[2];   // units OK
     t0[ipoint]=-(*fVDriftParam)[0]/(1+(*fVDriftParam)[3]);       // t0 to be normalized to the ms
     t0[ipoint]/=(param->GetDriftV()/1000000.); 

diff --git a/TPC/TPCcalib/AliTPCcalibAlignInterpolation.cxx b/TPC/TPCcalib/AliTPCcalibAlignInterpolation.cxx
@@ -3098,8 +3098,7 @@ void  AliTPCcalibAlignInterpolation::MakeVDriftOCDB(const char *inputFile, Int_t
   atime[0]=graphDRIFTVD->GetX()[0];
   atime[1]=graphDRIFTVD->GetX()[graphDRIFTVD->GetN()-1];
   for (Int_t ipoint=0; ipoint<=1; ipoint++){
-    //    deltaZ[ipoint]=-(*vdriftParam)[1];  // unit OK
-    deltaZ[ipoint]=(*vdriftParam)[1];  // unit OK   // RS Sign should be opposite to t0 corr, since it is subtracted from (Zmax-drift)
+    deltaZ[ipoint]=-(*vdriftParam)[1];  // unit OK
     vdgy[ipoint]=-(*vdriftParam)[2];   // units OK
     t0[ipoint]=-(*vdriftParam)[0]/(1+(*vdriftParam)[3]);       // t0 to be normalized to the ms
     t0[ipoint]/=(param->GetDriftV()/1000000.);