/data/refman/pasoursint/CMSSW_6_1_2_SLHC2/src/Alignment/TrackerAlignment/plugins/TrackerSystematicMisalignments.cc

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#include "FWCore/Framework/interface/ESHandle.h"
#include "Geometry/Records/interface/IdealGeometryRecord.h"
#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeomBuilderFromGeometricDet.h"

#include "Alignment/CommonAlignment/interface/SurveyDet.h"
#include "Alignment/TrackerAlignment/interface/AlignableTracker.h"

#include "CondFormats/Alignment/interface/Alignments.h"
#include "CondFormats/AlignmentRecord/interface/TrackerAlignmentRcd.h"
#include "CondFormats/Alignment/interface/AlignmentErrors.h"
#include "CondFormats/AlignmentRecord/interface/TrackerAlignmentErrorRcd.h"

#include "FWCore/Framework/interface/EventSetup.h"
#include "FWCore/MessageLogger/interface/MessageLogger.h"
#include "FWCore/ParameterSet/interface/ParameterSet.h"

#include "DataFormats/DetId/interface/DetId.h"
#include "Geometry/TrackerGeometryBuilder/interface/TrackerGeometry.h"
#include "Geometry/TrackingGeometryAligner/interface/GeometryAligner.h"
#include "CLHEP/Random/RandGauss.h"

#include "Alignment/TrackerAlignment/plugins/TrackerSystematicMisalignments.h"

#include "DataFormats/SiStripDetId/interface/SiStripDetId.h"  // for enums TID/TIB/etc.

// Database
#include "CondCore/DBOutputService/interface/PoolDBOutputService.h"
#include "FWCore/ServiceRegistry/interface/Service.h"

// -----------------------------------------------------------------
// 2010-05-20 Frank Meier
// Changed sign of z-correction, i.e. z-expansion is now an expansion
// made some variables constant, removed obviously dead code and comments

TrackerSystematicMisalignments::TrackerSystematicMisalignments(const edm::ParameterSet& cfg)
  : theAlignableTracker(0),
    theParameterSet(cfg)
{
        // use existing geometry
        m_fromDBGeom = cfg.getUntrackedParameter< bool > ("fromDBGeom");
        
        // constants
        m_radialEpsilon = cfg.getUntrackedParameter< double > ("radialEpsilon");
        m_telescopeEpsilon = cfg.getUntrackedParameter< double > ("telescopeEpsilon");
        m_layerRotEpsilon = cfg.getUntrackedParameter< double > ("layerRotEpsilon");
        m_bowingEpsilon = cfg.getUntrackedParameter< double > ("bowingEpsilon");
        m_zExpEpsilon = cfg.getUntrackedParameter< double > ("zExpEpsilon");
        m_twistEpsilon = cfg.getUntrackedParameter< double > ("twistEpsilon");
        m_ellipticalEpsilon = cfg.getUntrackedParameter< double > ("ellipticalEpsilon");
        m_skewEpsilon = cfg.getUntrackedParameter< double > ("skewEpsilon");
        m_saggitaEpsilon = cfg.getUntrackedParameter< double > ("saggitaEpsilon");
        
        if (m_radialEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying radial ...";          
        }
        if (m_telescopeEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying telescope ...";               
        }
        if (m_layerRotEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying layer rotation ...";          
        }
        if (m_bowingEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying bowing ...";          
        }
        if (m_zExpEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying z-expansion ...";             
        }
        if (m_twistEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying twist ...";           
        }
        if (m_ellipticalEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying elliptical ...";              
        }
        if (m_skewEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying skew ...";            
        }
        if (m_saggitaEpsilon > -990.0){
                edm::LogWarning("MisalignedTracker") << "Applying saggita ...";         
        }

        // get flag for suppression of blind movements
        suppressBlindMvmts = cfg.getUntrackedParameter< bool > ("suppressBlindMvmts");
        if (suppressBlindMvmts)
        {
                edm::LogWarning("MisalignedTracker") << "Blind movements suppressed (TIB/TOB in z, TID/TEC in r)";
        }
        
        // compatibility with old (weird) z convention
        oldMinusZconvention = cfg.getUntrackedParameter< bool > ("oldMinusZconvention");
        if (oldMinusZconvention)
        {
                edm::LogWarning("MisalignedTracker") << "Old z convention: dz --> -dz";
        }
        else
        {
                edm::LogWarning("MisalignedTracker") << "New z convention: dz --> dz";
        }

}

void TrackerSystematicMisalignments::beginJob()
{
                
}


void TrackerSystematicMisalignments::analyze(const edm::Event& event, const edm::EventSetup& setup){
        
        
        edm::ESHandle<GeometricDet>  geom;
        setup.get<IdealGeometryRecord>().get(geom);      
        TrackerGeometry* tracker = TrackerGeomBuilderFromGeometricDet().build(&*geom, theParameterSet);
        
        //take geometry from DB or randomly generate geometry
        if (m_fromDBGeom){
                //build the tracker
                edm::ESHandle<Alignments> alignments;
                edm::ESHandle<AlignmentErrors> alignmentErrors;
                
                setup.get<TrackerAlignmentRcd>().get(alignments);
                setup.get<TrackerAlignmentErrorRcd>().get(alignmentErrors);
                
                //apply the latest alignments
                GeometryAligner aligner;
                aligner.applyAlignments<TrackerGeometry>( &(*tracker), &(*alignments), &(*alignmentErrors), AlignTransform() );
                
        }
        
        theAlignableTracker = new AlignableTracker(&(*tracker));
        
        applySystematicMisalignment( &(*theAlignableTracker) );
        
        // -------------- writing out to alignment record --------------
        Alignments* myAlignments = theAlignableTracker->alignments() ;
        AlignmentErrors* myAlignmentErrors = theAlignableTracker->alignmentErrors() ;
        
        // Store alignment[Error]s to DB
        edm::Service<cond::service::PoolDBOutputService> poolDbService;
        std::string theAlignRecordName = "TrackerAlignmentRcd";
        std::string theErrorRecordName = "TrackerAlignmentErrorRcd";
        
        // Call service
        if( !poolDbService.isAvailable() ) // Die if not available
                throw cms::Exception("NotAvailable") << "PoolDBOutputService not available";
        
        poolDbService->writeOne<Alignments>(&(*myAlignments), poolDbService->beginOfTime(), theAlignRecordName);
        poolDbService->writeOne<AlignmentErrors>(&(*myAlignmentErrors), poolDbService->beginOfTime(), theErrorRecordName);
}

void TrackerSystematicMisalignments::applySystematicMisalignment(Alignable* ali)
{
        
        const align::Alignables& comp = ali->components();
        unsigned int nComp = comp.size();
        //move then do for lower level object
        //for issue of det vs detunit
        bool usecomps = true;
        if ((ali->alignableObjectId()==2)&&(nComp>=1)) usecomps = false;
        for (unsigned int i = 0; i < nComp; ++i){
                if (usecomps) applySystematicMisalignment(comp[i]);
        }

        // if suppression of blind mvmts: check if subdet is blind to a certain mode
        bool blindToZ(false), blindToR(false);
        if (suppressBlindMvmts)
        {
                const int subdetid = ali->geomDetId().subdetId();
                switch(subdetid)
                {
                        // TIB/TON blind to z
                        case SiStripDetId::TIB: 
                        case SiStripDetId::TOB: 
                                blindToZ = true; 
                                break;
                        // TID/TEC blind to R
                        case SiStripDetId::TID: 
                        case SiStripDetId::TEC: 
                                blindToR = true; 
                                break;
                        default: 
                                break;
                }
        }

        const int level = ali->alignableObjectId();     
        if ((level == 1)||(level == 2)){                
                const align::PositionType gP = ali->globalPosition();
                const align::GlobalVector gVec = findSystematicMis( gP, blindToZ, blindToR);
                ali->move( gVec );
        }
}        

align::GlobalVector TrackerSystematicMisalignments::findSystematicMis( align::PositionType globalPos, const bool blindToZ, const bool blindToR ){
//align::GlobalVector TrackerSystematicMisalignments::findSystematicMis( align::PositionType globalPos ){
        // calculates shift for the current alignable
        // all corrections are calculated w.r.t. the original geometry  
        double deltaX = 0.0;
        double deltaY = 0.0;
        double deltaZ = 0.0;
        const double oldX = globalPos.x();
        const double oldY = globalPos.y();
        const double oldZ = globalPos.z();
        const double oldPhi = globalPos.phi();
        const double oldR = sqrt(globalPos.x()*globalPos.x() + globalPos.y()*globalPos.y());

        if (m_radialEpsilon > -990.0 && !blindToR){
                deltaX += m_radialEpsilon*oldX;
                deltaY += m_radialEpsilon*oldY;
        }
        if (m_telescopeEpsilon > -990.0 && !blindToZ){
                deltaZ += m_telescopeEpsilon*oldR;
        }
        if (m_layerRotEpsilon > -990.0){
                // The following number was chosen such that the Layer Rotation systematic 
                // misalignment would not cause an overall rotation of the tracker.
                const double Roffset = 57.0;
                const double xP = oldR*cos(oldPhi+m_layerRotEpsilon*(oldR-Roffset));
                const double yP = oldR*sin(oldPhi+m_layerRotEpsilon*(oldR-Roffset));
                deltaX += (xP - oldX);
                deltaY += (yP - oldY);
        }
        if (m_bowingEpsilon > -990.0 && !blindToR){
                const double trackeredgePlusZ=271.846;
                const double bowfactor=m_bowingEpsilon*(trackeredgePlusZ*trackeredgePlusZ-oldZ*oldZ);
                deltaX += oldX*bowfactor;
                deltaY += oldY*bowfactor;
        }
        if (m_zExpEpsilon > -990.0 && !blindToZ){
                deltaZ += oldZ*m_zExpEpsilon;
        }
        if (m_twistEpsilon > -990.0){
                const double xP = oldR*cos(oldPhi+m_twistEpsilon*oldZ);
                const double yP = oldR*sin(oldPhi+m_twistEpsilon*oldZ);
                deltaX += (xP - oldX);
                deltaY += (yP - oldY);
        }
        if (m_ellipticalEpsilon > -990.0 && !blindToR){
                deltaX += oldX*m_ellipticalEpsilon*cos(2.0*oldPhi);
                deltaY += oldY*m_ellipticalEpsilon*cos(2.0*oldPhi);
        }
        if (m_skewEpsilon > -990.0 && !blindToZ){
                deltaZ += m_skewEpsilon*cos(oldPhi);
        }
        if (m_saggitaEpsilon > -990.0){
                // deltaX += oldX/fabs(oldX)*m_saggitaEpsilon; // old one...
                deltaY += oldR*m_saggitaEpsilon;
        }

        // Compatibility with old version <= 1.5
        if (oldMinusZconvention) deltaZ = -deltaZ;
        
        align::GlobalVector gV( deltaX, deltaY, deltaZ );
        return gV;
}

// Plug in to framework

#include "FWCore/Framework/interface/MakerMacros.h"

DEFINE_FWK_MODULE(TrackerSystematicMisalignments);