// and convert the data into AliAlignObjParams of alignable EMCAL volumes.
// AliEMCALSurvey inherits TObject only to use AliLog "functions".
//
-// This whole thing is just a dummy class with dummy variables until
-// the actual survey points are determined. For now I assumed that
-// the x,y center and starting z value of each supermodule is the only
-// surveyed point
+// Dummy functions originally written before EMCAL installation and
+// survey are kept for backward compatibility, but now they are not
+// used.
+//
+// Surveyed points on the EMCAL support rails were used with the CATIA
+// 3D graphics program to determine the positions of the bottom
+// corners of the active area for each supermodule. These numbers are
+// read in from file and converted to position of the center and roll,
+// pitch, yaw angles of each installed SM.
//
// J.L. Klay - Cal Poly
-// 28-Feb-2008
+// 21-May-2010
//
#include <fstream>
#include <TMath.h>
#include "AliSurveyObj.h"
+#include "AliSurveyPoint.h"
#include "AliAlignObjParams.h"
#include "AliEMCALGeometry.h"
//____________________________________________________________________________
AliEMCALSurvey::AliEMCALSurvey()
- : fNSuperModule(0),
- fSuperModuleData(0)
+ : fNSuperModule(0),
+ fSuperModuleData(0),
+ fDataType(kSurvey)
{
//Default constructor.
}
namespace {
- //for now, measurements assumed to be taken at x,y center and
- //nominal starting z value of each supermodule
+ //Coordinates for each SM described in survey reports
struct AliEMCALSuperModuleCoords {
- Double_t fX1; //x coordinate of the first supermodule point
- Double_t fY1; //y coordinate of the first supermodule point
- Double_t fZ1; //z coordinate of the first supermodule point
+ Double_t fX1; //x coordinate of the center of supermodule
+ Double_t fY1; //y coordinate of the center of supermodule
+ Double_t fZ1; //z coordinate of the center of supermodule
+ Double_t fPsi; //yaw (psi) of supermodule
+ Double_t fTheta; //pitch (theta) of supermodule
+ Double_t fPhi; //roll angle (phi) of supermodule
+
};
}
//____________________________________________________________________________
-AliEMCALSurvey::AliEMCALSurvey(const TString &txtFileName)
- : fNSuperModule(0),
- fSuperModuleData(0)
+AliEMCALSurvey::AliEMCALSurvey(const TString &txtFileName,const SurveyDataType_t type)
+ : fNSuperModule(0),
+ fSuperModuleData(0),
+ fDataType(type)
{
- //Read survey data from txt file.
+ //Get the geometry object and then attempt to
+ //read survey data from a file, depending on which
+ //method (kSurvey or kDummy) is selected.
+
const AliEMCALGeometry *geom = AliEMCALGeometry::GetInstance();
if (!geom) {
AliError("Cannot obtain AliEMCALGeometry instance.");
return;
}
- std::ifstream inputFile(txtFileName.Data());
- if (!inputFile) {
- AliError(("Cannot open the survey file " + txtFileName).Data());
- return;
- }
-
fNSuperModule = geom->GetNumberOfSuperModules();
- Int_t dummyInt = 0;
- Double_t *xReal = new Double_t[fNSuperModule];
- Double_t *yReal = new Double_t[fNSuperModule];
- Double_t *zReal = new Double_t[fNSuperModule];
+ if(fDataType == kSurvey) {
- for (Int_t i = 0; i < fNSuperModule; ++i) {
+ AliSurveyObj *s1 = new AliSurveyObj();
+ s1->FillFromLocalFile(txtFileName);
+ TObjArray* points = s1->GetData();
+ InitSuperModuleData(points);
+
+ } else {
+
+ //Use a dummy file that stores x,y,z of the center of each SM
+ //useful for testing...
+ std::ifstream inputFile(txtFileName.Data());
if (!inputFile) {
- AliError("Error while reading input file.");
- delete [] xReal;
- delete [] yReal;
- delete [] zReal;
+ AliError(("Cannot open the survey file " + txtFileName).Data());
return;
}
- inputFile>>dummyInt>>xReal[i]>>yReal[i]>>zReal[i];
- }
+ Int_t dummyInt = 0;
+ Double_t *xReal = new Double_t[fNSuperModule];
+ Double_t *yReal = new Double_t[fNSuperModule];
+ Double_t *zReal = new Double_t[fNSuperModule];
+ Double_t *psiReal = new Double_t[fNSuperModule];
+ Double_t *thetaReal = new Double_t[fNSuperModule];
+ Double_t *phiReal = new Double_t[fNSuperModule];
+
+ for (Int_t i = 0; i < fNSuperModule; ++i) {
+ if (!inputFile) {
+ AliError("Error while reading input file.");
+ delete [] xReal;
+ delete [] yReal;
+ delete [] zReal;
+ delete [] psiReal;
+ delete [] thetaReal;
+ delete [] phiReal;
+ return;
+ }
+ inputFile>>dummyInt>>xReal[i]>>yReal[i]>>zReal[i]>>psiReal[i]>>thetaReal[i]>>phiReal[i];
+ }
- InitSuperModuleData(xReal, yReal, zReal);
+ InitSuperModuleData(xReal, yReal, zReal, psiReal, thetaReal, phiReal);
+
+ delete [] xReal;
+ delete [] yReal;
+ delete [] zReal;
+ delete [] psiReal;
+ delete [] thetaReal;
+ delete [] phiReal;
+
+ } //kDummy way of doing it
- delete [] xReal;
- delete [] yReal;
- delete [] zReal;
}
//____________________________________________________________________________
AliEMCALSurvey::~AliEMCALSurvey()
{
+ //destructor
delete [] fSuperModuleData;
}
false
);
++arrayInd;
+
}
}
}
//____________________________________________________________________________
-void AliEMCALSurvey::InitSuperModuleData(const Double_t *xReal, const Double_t *yReal, const Double_t *zReal)
+void AliEMCALSurvey::InitSuperModuleData(const TObjArray *svypts)
{
+ //This method uses the data points from the EMCAL survey and CATIA program to
+ //create the alignment matrices. Only valid for (installed)
+ //SM, others will have null objects
+
+ /*--------------------------------------
+ The bottom edges of the strip modules
+ define the active area of the EMCAL, but
+ in software we have a box to hold them which
+ is longer than that. We need to convert
+ info about the position of the corners of the
+ bottom of the active area to the center of
+ the software box that contains the strip
+ modules.
+
+ View from beam axis up to EMCAL
+ Ai Ci
+
+ 0,1 0,0 1,0 1,1
+ xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx
+ x x x x x x
+ x x % * x x * % x x
+ x x x x x x
+ xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx
+ 1,1 1,0 0,0 0,1
+ <--> = added length <--> = added length
+
+ * represents the center of the active area
+ % represents the center of the full box (with added length)
+
+ View from side of topmost SM
+
+ Ai Ci
+
+ 0,1 0,0 1,0 1,1
+ xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx
+ x x % * x x % * x x
+ xxxxxxxxxxxxxxxxxxx xxxxxxxxxxxxxxxxxxxx
+ 1,1 1,0 0,0 0,1
+ <--> = added length <--> = added length
+
+ * represents the center of the active area
+ % represents the center of the full box (with added length)
+
+ -------------------------------------*/
AliEMCALGeometry *geom = AliEMCALGeometry::GetInstance();
//Center of supermodules
}
smc.fX1 = xpos;
smc.fY1 = ypos;
+ smc.fPhi = phi; //degrees
+ smc.fTheta = 0.; //degrees
+ smc.fPsi = 0.; //degrees
if(smodnum%2==0) {
smc.fZ1 = zpos;
} else {
smc.fZ1 = -zpos;
}
+ //printf("PHI OF IDEAL SM = %.2f\n",smc.fPhi);
+
}
+ //Real coordinates of center and rotation angles need to be computed
+ //from the survey/CATIA points
+
+ char substr[100];
AliEMCALSuperModuleCoords *realSM = new AliEMCALSuperModuleCoords[fNSuperModule];
for (Int_t smodnum = 0; smodnum < geom->GetNumberOfSuperModules(); ++smodnum) {
AliEMCALSuperModuleCoords &smc = realSM[smodnum];
- zpos = pars[2];
- smc.fX1 = xReal[smodnum]; //x and y match
- smc.fY1 = yReal[smodnum]; //x and y match
+ Double_t zLength = pars[2]*2.; //length of SM in z from software
+ Double_t halfHeight = pars[0]; //half the height of the SM in y direction
+
+ sprintf(substr,"4096%d",smodnum);
+ //retrieve components of four face points and determine average position of center
+ //in x,y,z
+
+ std::vector<Double_t> xval;
+ std::vector<Double_t> yval;
+ std::vector<Double_t> zval;
+
+ for(Int_t i = 0; i < svypts->GetEntries(); i++) {
+ AliSurveyPoint* pt = (AliSurveyPoint*)svypts->At(i);
+ TString ptname = pt->GetPointName();
+ if(ptname.Contains(substr)) {
+ //Note: order of values is 00, 01, 10, 11
+ xval.push_back(pt->GetX()*100.); //convert m to cm
+ yval.push_back(pt->GetY()*100.);
+ zval.push_back(pt->GetZ()*100.);
+ }
+ }
+
+ //compute center of active area of each SM on bottome face from survey points
+ Double_t activeX = ((xval[0] + (xval[2] - xval[0])/2.) //x00 and x10
+ +(xval[1] + (xval[3] - xval[1])/2.) ) /2.; //x01 and x11
+
+ Double_t activeY = ((yval[0] + (yval[2] - yval[0])/2.)
+ +(yval[1] + (yval[3] - yval[1])/2.) ) /2.;
+
+ Double_t activeZ = ((zval[0] + (zval[2] - zval[0])/2.)
+ +(zval[1] + (zval[3] - zval[1])/2.) ) /2.;
+
+ //printf("Bottom Center of active area of SM %s: %.2f, %.2f, %.2f\n",substr,activeX,activeY,activeZ);
+
+ //compute angles for each SM
+ //rotation about each axis
+ //phi = angle in x-y plane
+
+ Double_t realphi = 0.;
+ //Note: this is phi wrt y axis. To get phi wrt to x, add pi/2
+ if(smodnum%2 == 0) {
+ realphi = (TMath::ATan((yval[2] - yval[0])/(xval[2] - xval[0]))
+ +TMath::ATan((yval[3] - yval[1])/(xval[3] - xval[1])) )/2.;
+ } else {
+ realphi = (TMath::ATan((yval[0] - yval[2])/(xval[0] - xval[2]))
+ +TMath::ATan((yval[1] - yval[3])/(xval[1] - xval[3])) )/2.;
+ }
+
+ //NOTE: Psi angle is always zero because the two z values being
+ //subtracted are exactly the same, but just in case that could change...
+ //psi = angle in x-z plane
+ Double_t realpsi = (TMath::ATan((zval[0] - zval[2])/(xval[2] - xval[0]))
+ +TMath::ATan((zval[1] - zval[3])/(xval[3] - xval[1])) )/2.;
+
+ //theta = angle in y-z plane
+ Double_t realtheta = TMath::Pi()/2.
+ - (TMath::ATan((zval[2] - zval[3])/(yval[3] - yval[2]))
+ +TMath::ATan((zval[0] - zval[1])/(yval[1] - yval[0])) )/2.;
+
+ //printf("Old edge of %s 01: %.2f, %.2f, %.2f\n",substr,xval[1],yval[1],zval[1]);
+ //printf("Old edge of %s 11: %.2f, %.2f, %.2f\n",substr,xval[3],yval[3],zval[3]);
+
+ //Now calculate the center of the box in z with length added to the 01
+ //and 11 corners, corrected by the theta angle
+ Double_t activeLength = TMath::Abs(((zval[1] - zval[0]) + (zval[3] - zval[2]))/2.);
+ //printf("ACTIVE LENGTH = %.2f\n",activeLength);
+ if(smodnum%2 == 0) {
+ yval[1] += (zLength - activeLength)*sin(realtheta);
+ yval[3] += (zLength - activeLength)*sin(realtheta);
+ zval[1] += (zLength - activeLength)*cos(realtheta);
+ zval[3] += (zLength - activeLength)*cos(realtheta);
+ } else {
+ yval[1] -= (zLength - activeLength)*sin(realtheta);
+ yval[3] -= (zLength - activeLength)*sin(realtheta);
+ zval[1] -= (zLength - activeLength)*cos(realtheta);
+ zval[3] -= (zLength - activeLength)*cos(realtheta);
+ }
+
+ //printf("New extended edge of %s 01: %.2f, %.2f, %.2f\n",substr,xval[1],yval[1],zval[1]);
+ //printf("New extended edge of %s 11: %.2f, %.2f, %.2f\n",substr,xval[3],yval[3],zval[3]);
+
+ //Compute the center of the bottom of the box in x,y,z
+ Double_t realX = activeX;
+ Double_t realY = ((yval[0] + (yval[2] - yval[0])/2.)
+ +(yval[1] + (yval[3] - yval[1])/2.) ) /2.;
+ Double_t realZ = ((zval[0] + (zval[2] - zval[0])/2.)
+ +(zval[1] + (zval[3] - zval[1])/2.) ) /2.;
+
+
+ //printf("Bottom Center of SM %s Box: %.2f, %.2f, %.2f\n",substr,realX,realY,realZ);
+
+ //correct the SM centers so that we have the center of the box in
+ //x,y using the phi,theta angles
+ realX += halfHeight*TMath::Cos(TMath::Pi()/2+realphi);
+ realY += halfHeight*(TMath::Sin(TMath::Pi()/2+realphi) + TMath::Sin(realtheta));
+ realZ += halfHeight*TMath::Cos(TMath::Pi()/2-realtheta);
+
+ //printf("Rotation angles of SM %s: %.4f, %.4f, %.4f\n",substr,realphi*TMath::RadToDeg(),realpsi*TMath::RadToDeg(),realtheta*TMath::RadToDeg());
+ //printf("Middle of SM %s: %.2f, %.2f, %.2f\n\n",substr,realX,realY,realZ);
+
+ smc.fX1 = realX;
+ smc.fY1 = realY;
+ smc.fZ1 = realZ;
+
+ smc.fPhi = 90. + realphi*TMath::RadToDeg();
+ smc.fTheta = 0. + realtheta*TMath::RadToDeg();
+ smc.fPsi = 0. + realpsi*TMath::RadToDeg();
+
+ }//loop over supermodules
+
+ fSuperModuleData = new AliEMCALSuperModuleDelta[fNSuperModule];
+
+ for (Int_t i = 0; i < fNSuperModule; ++i) {
+ const AliEMCALSuperModuleCoords &real = realSM[i];
+ const AliEMCALSuperModuleCoords &ideal = idealSM[i];
+ AliEMCALSuperModuleDelta &t = fSuperModuleData[i];
+ t.fXShift = real.fX1 - ideal.fX1;
+ t.fYShift = real.fY1 - ideal.fY1;
+ t.fZShift = real.fZ1 - ideal.fZ1;
+ t.fPhi = real.fPhi - ideal.fPhi;
+ t.fTheta = real.fTheta - ideal.fTheta;
+ t.fPsi = real.fPsi - ideal.fPsi;
+
+ printf("===================== SM %d =======================\n",i);
+ printf("real x (%.2f) - ideal x (%.2f) = shift in x (%.2f)\n",real.fX1,ideal.fX1,t.fXShift);
+ printf("real y (%.2f) - ideal y (%.2f) = shift in y (%.2f)\n",real.fY1,ideal.fY1,t.fYShift);
+ printf("real z (%.2f) - ideal z (%.2f) = shift in z (%.2f)\n",real.fZ1,ideal.fZ1,t.fZShift);
+ printf("real theta (%.2f) - ideal theta (%.2f) = shift in theta %.2f\n",real.fTheta,ideal.fTheta,t.fTheta);
+ printf("real psi (%.2f) - ideal psi (%.2f) = shift in psi %.2f\n",real.fPsi,ideal.fPsi,t.fPsi);
+ printf("real phi (%.2f) - ideal phi (%.2f) = shift in phi %.2f\n",real.fPhi,ideal.fPhi,t.fPhi);
+ printf("===================================================\n");
+ }
+
+ delete [] realSM;
+ delete [] idealSM;
+}
+
+
+//____________________________________________________________________________
+void AliEMCALSurvey::InitSuperModuleData(const Double_t *xReal, const Double_t *yReal,
+ const Double_t *zReal, const Double_t *psiReal,
+ const Double_t *thetaReal, const Double_t *phiReal)
+{
+ ///////////////////////////////////////
+ //Dummy method just takes the inputted values and applies them
+ //
+ //Useful for testing small changes
+ //////////////////////////////////////
+ AliEMCALGeometry *geom = AliEMCALGeometry::GetInstance();
+ //Center of supermodules
+ Float_t *pars = geom->GetSuperModulesPars();
+ Double_t rpos = (geom->GetEnvelop(0) + geom->GetEnvelop(1))/2.;
+ Double_t phi, phiRad, xpos, ypos, zpos;
+
+ zpos = pars[2];
+
+ AliEMCALSuperModuleCoords *idealSM = new AliEMCALSuperModuleCoords[fNSuperModule];
+ for (Int_t smodnum = 0; smodnum < geom->GetNumberOfSuperModules(); ++smodnum) {
+ AliEMCALSuperModuleCoords &smc = idealSM[smodnum];
+ phiRad = geom->GetPhiCenterOfSM(smodnum); //comes in radians
+ phi = phiRad*180./TMath::Pi(); //need degrees for AliAlignObjParams
+ xpos = rpos * TMath::Cos(phiRad);
+ ypos = rpos * TMath::Sin(phiRad);
+ if(geom->GetKey110DEG() && smodnum >= 10) {
+ xpos += (pars[1]/2. * TMath::Sin(phiRad));
+ ypos -= (pars[1]/2. * TMath::Cos(phiRad));
+ }
+ smc.fX1 = xpos;
+ smc.fY1 = ypos;
+
+ smc.fPhi = phi; //degrees
+ smc.fTheta = 0.; //degrees
+ smc.fPsi = 0.; //degrees
+
if(smodnum%2==0) {
- smc.fZ1 = zReal[smodnum]-zpos; //z measured is along end,
- } else { //convert to middle of SM
- smc.fZ1 = zReal[smodnum]+zpos;
+ smc.fZ1 = zpos;
+ } else {
+ smc.fZ1 = -zpos;
}
+
+ }
+
+ AliEMCALSuperModuleCoords *realSM = new AliEMCALSuperModuleCoords[fNSuperModule];
+ for (Int_t smodnum = 0; smodnum < geom->GetNumberOfSuperModules(); ++smodnum) {
+ AliEMCALSuperModuleCoords &smc = realSM[smodnum];
+ smc.fX1 = xReal[smodnum];
+ smc.fY1 = yReal[smodnum];
+ smc.fZ1 = zReal[smodnum];
+ smc.fTheta = thetaReal[smodnum];
+ smc.fPsi = psiReal[smodnum];
+ smc.fPhi = phiReal[smodnum];
}
fSuperModuleData = new AliEMCALSuperModuleDelta[fNSuperModule];
const AliEMCALSuperModuleCoords &real = realSM[i];
const AliEMCALSuperModuleCoords &ideal = idealSM[i];
AliEMCALSuperModuleDelta &t = fSuperModuleData[i];
- t.fTheta = TMath::ATan(real.fZ1 / real.fX1) -
- TMath::ATan(ideal.fZ1 / ideal.fX1);
- t.fTheta *= TMath::RadToDeg();
+ t.fTheta = real.fTheta - ideal.fTheta;
t.fPsi = 0.;
- t.fPhi = TMath::ATan(real.fY1 / real.fX1) - TMath::ATan(ideal.fY1 / ideal.fX1);
- t.fPhi *= TMath::RadToDeg();
+ t.fPhi = real.fPhi - ideal.fPhi;
t.fXShift = real.fX1 - ideal.fX1;
t.fYShift = real.fY1 - ideal.fY1;
t.fZShift = real.fZ1 - ideal.fZ1;
+ printf("===================== SM %d =======================\n",i);
+ printf("real x (%.2f) - ideal x (%.2f) = shift in x (%.2f)\n",real.fX1,ideal.fX1,t.fXShift);
+ printf("real y (%.2f) - ideal y (%.2f) = shift in y (%.2f)\n",real.fY1,ideal.fY1,t.fYShift);
+ printf("real z (%.2f) - ideal z (%.2f) = shift in z (%.2f)\n",real.fZ1,ideal.fZ1,t.fZShift);
+ printf("real theta (%.2f) - ideal theta (%.2f) = shift in theta %.2f\n",real.fTheta,ideal.fTheta,t.fTheta);
+ printf("real psi (%.2f) - ideal psi (%.2f) = shift in psi %.2f\n",real.fPsi,ideal.fPsi,t.fPsi);
+ printf("real phi (%.2f) - ideal phi (%.2f) = shift in phi %.2f\n",real.fPhi,ideal.fPhi,t.fPhi);
+ printf("===================================================\n");
}
delete [] realSM;
delete [] idealSM;
}
+
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