1. Z-vertex dependent residuals in phi (2nd request of Akiba-san)
Taebong Moon
Yonsei Univ./RIKEN
Nov 12th 2014

2. Information
Alignment after X- and Y-vertex correction analyzed. This is intermediate result.
Original class
SvxPrimVertexFinder
SvxCentralTrackReco
New class
SvxCorrectPrimVertex
Run number: (Run14 AuAu 200GeV 2nd period)
# of PRDFs: 154
# of events per PRDF: All
Source:
SvxAlignment.cc/h & SvxCorrectPrimVertex.C/h & SvxQAForProduction.cc/h
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/backup
Macro:
Fun4All_VTX_p2.C: production macro
read_evttree.C/h & read_residual_phi.C/h: to draw the residuals in phi
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros
vertex.C: to draw (corrected) X- and Y-vertex
ana.C: to get fit parameters
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/0.p2Out/macros
Output: SvxAlignment root & SVXQA root
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out

3. Get paramenters from linear fit.
*154 PRDFs used.
X-vertex for E is wider than others
Y-intercept : (cm)
Slope : (cm)
Y-intercept : (cm)
Slope : (cm)
Y-intercept : (cm)
Slope : (cm)
Y-intercept : (cm)
Slope : (cm)
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/0.p2Out/macros/ana.C

4. the correction applied to X- and Y-vertex using parameters from linear fit

5. X-vertex from calibrated BC vs Z-vertex
*154 PRDFs used.
X-vertex for E is wider than others
Not corrected (both)
Not corrected (west)
Not corrected (east)
Corrected (west)
Corrected (east)
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros/vertex.C

6. Y-vertex from calibrated BC vs Z-vertex
*154 PRDFs used.
Not corrected (west)
Not corrected (east)
Corrected (west)
Corrected (east)
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros/vertex.C

7. Trigger setting string trgselname = "MB";
TrigSelect *minbias = new TrigSelect(trgselname);
trgsel.push_back(trgselname);
minbias->AddTrigger("BBCLL1(>1 tubes)");
minbias->AddTrigger("BBCLL1(>1 tubes) narrowvtx");
minbias->AddTrigger("BBCLL1(>1 tubes) narrowvtx CopyA");
minbias->AddTrigger("BBCLL1(>1 tubes) narrowvtx Copy B");
minbias->AddTrigger("BBCLL1(>1 tubes) novertex");

8. Default cuts Fun4All_VTX_p2.C 10 < BBC charge < 200
SvxAlignment.cc
Require “SVX_PRECISE”
0.5 < pT < 10
DC track quality = 31 or 63
|zed| < 75
||phiv| - |phi0|| < clustercut_angle = 0.25
|zproj + bbcz - svxz| < zproj_cut = 5.0
|dproj + mag_bend| < dproj_cut = 0.4
Read_evttree.C
|emcdphi| < 0.03
|emcdz| < 10
|zproj + svxprim[2] – svxz|< 2*sigma_z(layer)

9. To run drawing plotter for residuals in phi
Input:
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/SvxAlignment root
Working dir:
/direct/phenix+hhj/tmoon/3.Akiba/offline
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros
1st macro to be run.
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros/read_evttree.C
It will produce hist_dphi.root. Please run using root –l –b [macro] due to many plots.
2nd macro to be run.
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros/read_residual_phi.C
It will produce plot for mean of residuals in phi such as the following plots.

10. Primary vertex dependent residuals
*154 PRDFs used.
No correction
Black: no primz cut Red: primz < Green: -8 < primz < Blue: -4 < primz < 0
Yellow: 0 < primz < Pink: 4< primz < Bright blue: primz > 8
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros

11. Primary vertex dependent residuals
*154 PRDFs used.
Using svxcorrprim_west and _east when ux > 0 and ux < 0 respectively
Black: no primz cut Red: primz < Green: -8 < primz < Blue: -4 < primz < 0
Yellow: 0 < primz < Pink: 4< primz < Bright blue: primz > 8
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros

12. Primary vertex dependent residuals
*154 PRDFs used.
Using (svxcorrprim_west + svxcorrprim_east)/2 used
Black: no primz cut Red: primz < Green: -8 < primz < Blue: -4 < primz < 0
Yellow: 0 < primz < Pink: 4< primz < Bright blue: primz > 8
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros

13. SvxCorrectPrimVertex.C
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/backup
int SvxCorrectPrimVertex::process_event(PHCompositeNode *topNode) {
vtxout = findNode::getClass<VtxOut>(topNode,"VtxOut");
if ( vtxout == NULL )
cerr << " no VtxOut " << endl;
return EVENT_OK; }
PHPoint prim = vtxout->get_Vertex("SVX_PRECISE");
PHPoint prim_west = vtxout->get_Vertex("SVX_PRECISEW");
PHPoint prim_east = vtxout->get_Vertex("SVX_PRECISEE");
if ( isnan(prim.getX()) ) return EVENT_OK;
float vtx_corr[3], vtxerr_corr[3] = {0.002, , 0.005};
const float x0w = ;
const float y0w = ;
const float x0e = ;
const float y0e = ;
if ( !isnan(prim_west.getX()) )
vtx_corr[0] = prim_west.getX() - ( x0w + ( aw * prim.getZ() ) );
vtx_corr[1] = prim_west.getY() - ( y0w + ( bw * prim.getZ() ) );
vtx_corr[2] = prim_west.getZ();
vtxout->AddVtx("SVX_PRECISEW_CORR",vtx_corr,vtxerr_corr,15); // west
// Prim East
if ( !isnan(prim_east.getX()) )
vtx_corr[0] = prim_east.getX() - ( x0e + ( ae * prim.getZ() ) );
vtx_corr[1] = prim_east.getY() - ( y0e + ( be * prim.getZ() ) );
vtx_corr[2] = prim_east.getZ();
vtxout->AddVtx("SVX_PRECISEE_CORR",vtx_corr,vtxerr_corr,16); // east

14. Fun4All_VTX_p2.C
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/backup
SvxPrimVertexFinder *svxprimvtxfinder = new SvxPrimVertexFinder();
SubsysReco *svxprimvtxfinder_west = new SvxPrimVertexFinder("SVXPRIMVTXFINDERW",1);
SubsysReco *svxprimvtxfinder_east = new SvxPrimVertexFinder("SVXPRIMVTXFINDERE",2);
SubsysReco *svxcorrectprimvtx = new SvxCorrectPrimVertex("SVXCORRECTPRIMVTX");
se->registerSubsystem(svxprimvtxfinder);
se->registerSubsystem(svxprimvtxfinder_west);
se->registerSubsystem(svxprimvtxfinder_east);
se->registerSubsystem(svxcorrectprimvtx);

15. read_evttree.C
/direct/phenix+user06/phnxreco/Takashi_VTX_LbyL/tmoon/dsts/5.Akiba/2.p2Out/macros
float ux = cos(phi0);
float uy = sin(phi0);
// *******************************************************
// for mean of corrected vertex of w/e
float svxcorrprim_west_east_x = 0.5 * (svxcorrprim_west[0] + svxcorrprim_east[0]);
float svxcorrprim_west_east_y = 0.5 * (svxcorrprim_west[1] + svxcorrprim_east[1]);
float svxxc_p = svxx - svxcorrprim_west_east_x;
float svxyc_p = svxy - svxcorrprim_west_east_y;
float svx_xy2_p = svxxc_p * svxxc_p + svxyc_p * svxyc_p;
// for corrected vertex of w/e separately
if ( ux > 0 ) // west {
float svxxc_n = svxx - svxcorrprim_west[0];
float svxyc_n = svxy - svxcorrprim_west[1];
} else { // east
float svxxc_n = svxx - svxcorrprim_east[0];
float svxyc_n = svxy - svxcorrprim_east[1]; }
float svx_xy2_n = svxxc_n * svxxc_n + svxyc_n * svxyc_n;
float dproj_p = ux * svxyc_p - uy * svxxc_p;
float dproj_n = ux * svxyc_n - uy * svxxc_n;
float mag_bend_p = -1.0 * 1.0 * * charge * svx_xy2_p / pt;
float mag_bend_n = -1.0 * 1.0 * * charge * svx_xy2_n / pt;