--- /dev/null
+/**************************************************************************
+ * Copyright(c) 2007-2010, ALICE Experiment at CERN, All rights reserved. *
+ * *
+ * Author: The ALICE Off-line Project. *
+ * Contributors are mentioned in the code where appropriate. *
+ * *
+ * Permission to use, copy, modify and distribute this software and its *
+ * documentation strictly for non-commercial purposes is hereby granted *
+ * without fee, provided that the above copyright notice appears in all *
+ * copies and that both the copyright notice and this permission notice *
+ * appear in the supporting documentation. The authors make no claims *
+ * about the suitability of this software for any purpose. It is *
+ * provided "as is" without express or implied warranty. *
+ **************************************************************************/
+
+//========================================================================
+//
+// This class generates misalignment for PMD. In particular it defines
+// the misalignment in the three canonical scenarios: "ideal", "residual"
+// and "full".
+// It is meant to be run standalone or from the steering macro
+// $ALICE_ROOT/macros/MakeAlignmentObjs.C
+// looping on the detectors.
+//
+// Macro to randomly displace the 4 sectors of the PMD
+// in each plane. Each sector (to be misaligned)
+// of PMD houses the following :
+// (a) 6 modules of preshower plane
+// (b) 6 modules of veto plane
+// (c) The FEE boards on back plane of each module
+// (d) 6 modules of convertor plates
+// The clustering is done module-wise
+// The actual amount displacement will be provided
+// by the survey data and has to be converted into
+// displacement in x,y,z,theta, phi and psi
+
+
+// Now specify the path of the module to be misaligned
+// as followed in the PMD geant
+
+// _____________
+// | | |
+// | 1 | 3 |
+// | |________|
+// |____|___| |
+// | | 2 |
+// | 4 | |
+// |________|____|
+
+// Misalignment Matrix is expected to be
+// same for sectors 1 and 4
+// and for the sectors 2 and 3
+// As these will be mounted on the same
+// Steel plate
+//========================================================================
+
+#include "AliPMDMisAligner.h"
+#include "AliGeomManager.h"
+#include "TClonesArray.h"
+#include "TRandom.h"
+#include "AliAlignObjParams.h"
+#include "AliLog.h"
+
+ClassImp(AliPMDMisAligner)
+
+ //_______________________________________________________________________________________
+AliPMDMisAligner::AliPMDMisAligner() : AliMisAligner()
+{
+ //
+ // dummy constructor
+ //
+}
+
+//_______________________________________________________________________________________
+TClonesArray* AliPMDMisAligner::MakeAlObjsArray() {
+ // builds and returns the array of alignment objects
+ // according to the spcified misalignment scenario
+ // ("ideal", "residual" or "full").
+ //
+ TClonesArray *array = new TClonesArray("AliAlignObjParams",4);
+ TClonesArray &alobj = *array;
+
+ Double_t max_trans=0.1; // maximun shifts in X,Y,Z in centimeters
+ Double_t max_rot=0.1; // maximum shifts in angles in degrees
+
+ const char *Sector1="PMD/Sector1";
+ const char *Sector2="PMD/Sector2";
+ const char *Sector3="PMD/Sector3";
+ const char *Sector4="PMD/Sector4";
+
+ //Sectors 1 and 4
+ Double_t dx14, dy14, dz14; // Misalignment in X,Y and Z
+ Double_t dpsi14, dtheta14, dphi14; // Angular displacements
+ //Sectors 2 and 3
+ Double_t dx23, dy23, dz23; // Misalignment in X,Y and Z
+ Double_t dpsi23, dtheta23, dphi23; // Angular displacements
+
+ UShort_t iIndex=0; // PMD is not indexed
+ AliGeomManager::ELayerID iLayer = AliGeomManager::kInvalidLayer;
+ UShort_t volid = AliGeomManager::LayerToVolUID(iLayer,iIndex);
+
+ gRandom->SetSeed(4357);
+
+ if(TString(GetMisalType())=="ideal")
+ {
+
+ Double_t dx=0., dy=0., dz=0., dpsi=0., dtheta=0., dphi=0.;
+
+ for(Int_t i=0; i<4; i++){
+ TString snSector(Form("PMD/Sector%d",i+1));
+ new(alobj[i]) AliAlignObjParams(snSector.Data(), volid, dx, dy, dz, dpsi, dtheta, dphi, kTRUE);
+ }
+
+ }else if(TString(GetMisalType())=="residual" || TString(GetMisalType())=="full"){
+ if(!AliGeomManager::GetGeometry())
+ {
+ AliError("No geometry loaded into AliGeomManager! Returning null pointer!");
+ return 0;
+ }
+
+ // For sectors 1 and 4
+ // Translation displacement
+ dx14 = (gRandom->Uniform()-0.5)*max_trans;
+ dy14 = (gRandom->Uniform()-0.5)*max_trans;
+ dz14 = (gRandom->Uniform()-0.5)*max_trans;
+ //Rotation angles
+ dpsi14 = (gRandom->Uniform()-0.5)*max_rot;
+ dtheta14 = (gRandom->Uniform()-0.5)*max_rot;
+ dphi14 = (gRandom->Uniform()-0.5)*max_rot;
+
+ // For sectors 2 and 3
+ // Translation displacement
+ dx23 = (gRandom->Uniform()-0.5)*max_trans;
+ dy23 = (gRandom->Uniform()-0.5)*max_trans;
+ dz23 = (gRandom->Uniform()-0.5)*max_trans;
+ //Rotation angles
+ dpsi23 = (gRandom->Uniform()-0.5)*max_rot;
+ dtheta23 = (gRandom->Uniform()-0.5)*max_rot;
+ dphi23 = (gRandom->Uniform()-0.5)*max_rot;
+
+ new(alobj[0]) AliAlignObjParams(Sector1, volid, dx14, dy14, dz14, dpsi14, dtheta14, dphi14, kFALSE);
+ new(alobj[1]) AliAlignObjParams(Sector2, volid, dx14, dy14, dz14, dpsi14, dtheta14, dphi14, kFALSE);
+ new(alobj[2]) AliAlignObjParams(Sector3, volid, dx23, dy23, dz23, dpsi23, dtheta23, dphi23, kFALSE);
+ new(alobj[3]) AliAlignObjParams(Sector4, volid, dx23, dy23, dz23, dpsi23, dtheta23, dphi23, kFALSE);
+
+ }else{
+ AliError(Form("\"%s\" is not a valid identifier for misalignment types. Exiting ...",GetMisalType()));
+ return 0;
+ }
+
+ return array;
+}
+
+//_______________________________________________________________________________________
+AliCDBMetaData* AliPMDMisAligner::GetCDBMetaData() const {
+ // Returns the comment and responsible for the
+ // AliCDBMetaData to be associated with the OCDB entry
+ // containing the PMD array of misalignment objects
+ //
+ AliCDBMetaData* md = new AliCDBMetaData();
+ md->SetResponsible("");
+
+ if(TString(GetMisalType())=="ideal")
+ md->SetComment("Alignment objects for PMD ideal misalignment");
+ if(TString(GetMisalType())=="residual")
+ md->SetComment("Alignment objects for PMD residual misalignment");
+ if(TString(GetMisalType())=="full")
+ md->SetComment("Alignment objects for PMD full misalignment");
+
+ return md;
+}
git://git.uio.no / u / mrichter / AliRoot.git / commitdiff