/**************************************************************************
- * Copyright(c) 1998-2004, ALICE Experiment at CERN, All rights reserved. *
+ * Copyright(c) 1998-2006, ALICE Experiment at CERN, All rights reserved. *
* *
* Author: The ALICE Off-line Project. *
* Contributors are mentioned in the code where appropriate. *
/* $Id$ */
-//*-- Author: Aleksei Pavlinov(WSU)
+//_________________________________________________________________________
+// Main class for "twist" geometry of Shish-Kebab case.
+// Author: Aleksei Pavlinov(WSU).
+// Sep 20004.
+// See web page with description of Shish-Kebab geometries:
+// http://pdsfweb01.nersc.gov/~pavlinov/ALICE/SHISHKEBAB/RES/shishkebabALICE.html
+//_________________________________________________________________________
+
#include "AliEMCALShishKebabModule.h"
#include "AliEMCALGeometry.h"
-#include <TMath.h>
#include <TGraph.h>
-
-#include <assert.h>
+#include <TMath.h>
ClassImp(AliEMCALShishKebabModule)
Double_t AliEMCALShishKebabModule::fgb=0.;
Double_t AliEMCALShishKebabModule::fgr=0.;
-AliEMCALShishKebabModule::AliEMCALShishKebabModule(double theta) : TNamed()
-{ // theta in radians ; first object shold be with theta=pi/2.
- fTheta = theta;
+//_________________________________________________________________________
+AliEMCALShishKebabModule::AliEMCALShishKebabModule()
+ : TNamed(),
+ fOK(0),
+ fA(0.),
+ fB(0.),
+ fTheta(0.)
+{
+ // theta in radians ; first object shold be with theta=pi/2.
if(fgGeometry==0) {
+ fTheta = TMath::PiOver2();
if(GetParameters()) {
DefineFirstModule();
+ DefineName(fTheta);
}
- } else Warning("AliEMCALShishKebabModule(theta)","You should call this constractor just once !!");
- DefineName(fTheta);
+ } else {
+ Warning("AliEMCALShishKebabModule(theta)","You should call this constractor just once !!");
+ }
}
-AliEMCALShishKebabModule::AliEMCALShishKebabModule(AliEMCALShishKebabModule &leftNeighbor) : TNamed()
-{ // 22-sep-04
+//_________________________________________________________________________
+AliEMCALShishKebabModule::AliEMCALShishKebabModule(AliEMCALShishKebabModule &leftNeighbor)
+ : TNamed(),
+ fOK(0),
+ fA(0.),
+ fB(0.),
+ fTheta(0.)
+{
+ // 22-sep-04
TObject::SetUniqueID(leftNeighbor.GetUniqueID()+1);
Init(leftNeighbor.GetA(),leftNeighbor.GetB());
}
-void AliEMCALShishKebabModule::Init(double A, double B)
+//_________________________________________________________________________
+AliEMCALShishKebabModule::AliEMCALShishKebabModule(const AliEMCALShishKebabModule& mod)
+ : TNamed(mod.GetName(),mod.GetTitle()),
+ fOK(mod.fOK),
+ fA(mod.fA),
+ fB(mod.fB),
+ fTheta(mod.fTheta)
+{
+ //copy ctor
+}
+
+//_________________________________________________________________________
+void AliEMCALShishKebabModule::Init(Double_t A, Double_t B)
{
+ //
+ // Initialisation method
+ //
Double_t thetaMin, thetaMax, par[4];
Int_t npar=0;
if(A<0){
DefineName(fTheta);
}
+//_________________________________________________________________________
void AliEMCALShishKebabModule::DefineFirstModule()
{
+ // Define first module
fOK.Set(fga/2., fgr + fgb/2.); // position the center of module vs o
fB = fga/2.; // z=fB
TObject::SetUniqueID(1); //
}
+//_________________________________________________________________________
void AliEMCALShishKebabModule::DefineSecondModuleFirstAssumption()
{ // Keep for testing and checking
// cos(theta) << 1, theta ~ pi/2.; a/r = 11.4/462.54 = 0.0246465 << 1;
*/
}
+//_________________________________________________________________________
Double_t AliEMCALShishKebabModule::Solve(Double_t (*fcn)(Double_t*,Double_t*),
Double_t xmin, Double_t xmax, Int_t npar, Double_t *par, Double_t eps, Int_t maxIter)
{
+ // Find out "zero" using TGraph method
if(npar); // unused now
TGraph gr;
- double X,Y;
+ Double_t x,y;
Int_t k = 0;
- gr.Zero(k, xmin,xmax, eps, X,Y, maxIter); // remember initial interval
+ gr.Zero(k, xmin,xmax, eps, x,y, maxIter); // remember initial interval
while(k!=2) {
- Y = fcn(&X, par);
- gr.Zero(k, xmin,xmax, eps, X,Y, maxIter);
+ y = fcn(&x, par);
+ gr.Zero(k, xmin,xmax, eps, x,y, maxIter);
}
- return X;
+ return x;
}
-Double_t AliEMCALShishKebabModule::Y2(double *x, double *par)
-{ // For position calulation of second module
+//_________________________________________________________________________
+Double_t AliEMCALShishKebabModule::Y2(Double_t *x, Double_t *par)
+{
+ // For position calulation of second module
if(par);
Double_t theta = x[0];
Double_t cos = TMath::Cos(theta);
return y;
}
-Double_t AliEMCALShishKebabModule::YALL(double *x, double *par)
-{ // For position calulation of 3th, 4th to 30th modules
- Double_t a=par[0], r=par[1], A=par[2], B=par[3];
+//_________________________________________________________________________
+Double_t AliEMCALShishKebabModule::YALL(Double_t *x, Double_t *par)
+{
+ // For position calulation of 3th, 4th to 30th modules
+ Double_t a=par[0], r=par[1], aa=par[2], bb=par[3];
Double_t theta = x[0];
Double_t cos = TMath::Cos(theta);
Double_t sin = TMath::Sin(theta);
Double_t y1 = r + a*cos;
- Double_t y2 = A*(r*cos/sin + a/(2.*sin) - a*sin) + B;
+ Double_t y2 = aa*(r*cos/sin + a/(2.*sin) - a*sin) + bb;
Double_t y = y1-y2;
// printf(" theta %f Y %12.5e \n", theta, y);
return y;
}
-void AliEMCALShishKebabModule::DefineName(double theta)
+//_________________________________________________________________________
+void AliEMCALShishKebabModule::DefineName(Double_t theta)
{
- char name[100];
- // sprintf(name,"theta_%5.2f",theta*180./TMath::Pi());
- sprintf(name,"%2i(%5.2f)", TObject::GetUniqueID(), theta*180./TMath::Pi());
- SetName(name);
+ // Define name of object
+ SetName(Form("%2i(%5.2f)", TObject::GetUniqueID(), theta*TMath::RadToDeg()));
}
+//_________________________________________________________________________
Bool_t AliEMCALShishKebabModule::GetParameters()
{
+ // Get needing module parameters from EMCAL geometry
fgGeometry = AliEMCALGeometry::GetInstance();
- // if(!fgGeometry) assert(0);
if(!fgGeometry) {
Warning("GetParameters()"," No geometry ");
return kFALSE;
fga = (Double_t)fgGeometry->GetPhiModuleSize();
fgb = (Double_t)fgGeometry->GetLongModuleSize();
fgr = (Double_t)(fgGeometry->GetIPDistance() + fgGeometry->GetSteelFrontThickness());
- Print(0);
+ PrintShish(0);
return kTRUE;
}
-// service methods
-void AliEMCALShishKebabModule::Print(int pri) const
+//_________________________________________________________________________
+void AliEMCALShishKebabModule::PrintShish(Int_t pri) const
{
+ // service method
if(pri>=0) {
- Info("Print()", " a %7.2f | b %7.2f | r %7.2f ", fga, fgb, fgr);
+ Info("PrintShish()", " a %7.2f | b %7.2f | r %7.2f ", fga, fgb, fgr);
printf(" fTheta %f : %5.2f : cos(theta) %f\n", fTheta, GetThetaInDegree(),TMath::Cos(fTheta));
if(pri>0) {
printf("%i %s | theta %f -> %f\n", GetUniqueID(), GetName(), fTheta, fOK.Phi());
}
}
+//_________________________________________________________________________
+Double_t AliEMCALShishKebabModule::GetThetaInDegree() const
+{
+ return fTheta*TMath::RadToDeg();
+}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff