X-Git-Url: http://git.uio.no/git/?a=blobdiff_plain;f=MUON%2FAliMUONTriggerCircuit.cxx;h=016f2067f4389a3d08581d7e4ef9b68991660124;hb=ab5f05d7883a2a46e6825580f58e222f9e85995c;hp=113490de0546b7a949b7e8f88ad0e065889fb122;hpb=7103ac2d0ca25734c11539f441179183bf8a581f;p=u%2Fmrichter%2FAliRoot.git diff --git a/MUON/AliMUONTriggerCircuit.cxx b/MUON/AliMUONTriggerCircuit.cxx index 113490de054..016f2067f43 100644 --- a/MUON/AliMUONTriggerCircuit.cxx +++ b/MUON/AliMUONTriggerCircuit.cxx @@ -15,6 +15,7 @@ /* $Id$ */ +//----------------------------------------------------------------------------- /// \class AliMUONTriggerCircuit /// Contains as data members the Y positions of the X declusturized strips and /// the X positions of the (doubled or not) Y strips. @@ -22,10 +23,12 @@ /// local trigger output (see AliMUONTrackReconstructor::MakeTriggerTrack) /// /// \author Philippe Crochet (LPCCFd) +//----------------------------------------------------------------------------- #include "AliMUONTriggerCircuit.h" +#include "AliMUONConstants.h" +#include "AliMUONGeometryTransformer.h" -#include "AliMpTriggerSegmentation.h" #include "AliMpTrigger.h" #include "AliMpSlat.h" #include "AliMpPCB.h" @@ -35,6 +38,8 @@ #include "AliMpDDLStore.h" #include "AliMpLocalBoard.h" #include "AliMpConstants.h" +#include "AliMpPad.h" +#include "AliMpEncodePair.h" #include "AliRun.h" #include "AliLog.h" @@ -42,6 +47,8 @@ #include #include +using std::cout; +using std::endl; /// \cond CLASSIMP ClassImp(AliMUONTriggerCircuit) /// \endcond @@ -49,8 +56,8 @@ ClassImp(AliMUONTriggerCircuit) //---------------------------------------------------------------------- AliMUONTriggerCircuit::AliMUONTriggerCircuit(const AliMUONGeometryTransformer* transformer) : TObject(), - fTransformer(transformer), - fCurrentSeg(0x0), + fkTransformer(transformer), + fkCurrentSeg(0x0), fCurrentDetElem(0x0), fCurrentLocalBoard(0x0) { @@ -58,8 +65,13 @@ AliMUONTriggerCircuit::AliMUONTriggerCircuit(const AliMUONGeometryTransformer* t for (Int_t i = 1; i < AliMpConstants::NofLocalBoards()+1; ++i) { fXpos11[i].Set(16); - fYpos11[i].Set(31); - fYpos21[i].Set(63); + fYpos11[i].Set(32); + fYpos21[i].Set(64); + fZpos11[i].Set(32); + fZpos21[i].Set(64); + fXwidth11[i].Set(16); + fYwidth11[i].Set(32); + fYwidth21[i].Set(64); } for (Int_t i = 1; i < AliMpConstants::NofLocalBoards()+1; ++i) { // board begins at 1 @@ -74,7 +86,24 @@ AliMUONTriggerCircuit::AliMUONTriggerCircuit(const AliMUONGeometryTransformer* t LoadXPos(localBoard); LoadYPos(localBoard); - + /* + printf("LocalBoard %03d \n",i); + printf("fXpos11 \n"); + for (Int_t i1 = 0; i1 < 16; i1++) + printf("%02d %7.2f \n",i1,fXpos11[i][i1]); + printf("fYpos11 \n"); + for (Int_t i2 = 0; i2 < 32; i2++) + printf("%02d %7.2f \n",i2,fYpos11[i][i2]); + printf("fYpos21 \n"); + for (Int_t i3 = 0; i3 < 64; i3++) + printf("%02d %7.2f \n",i3,fYpos21[i][i3]); + printf("fZpos11 \n"); + for (Int_t i4 = 0; i4 < 32; i4++) + printf("%02d %8.2f \n",i4,fZpos11[i][i4]); + printf("fZpos21 \n"); + for (Int_t i5 = 0; i5 < 64; i5++) + printf("%02d %8.2f \n",i5,fZpos21[i][i5]); + */ } } @@ -87,6 +116,11 @@ AliMUONTriggerCircuit::~AliMUONTriggerCircuit() fXpos11[i].Reset(); fYpos11[i].Reset(); fYpos21[i].Reset(); + fZpos11[i].Reset(); + fZpos21[i].Reset(); + fXwidth11[i].Reset(); + fYwidth11[i].Reset(); + fYwidth21[i].Reset(); } } @@ -94,8 +128,8 @@ AliMUONTriggerCircuit::~AliMUONTriggerCircuit() //---------------------------------------------------------------------- AliMUONTriggerCircuit::AliMUONTriggerCircuit(const AliMUONTriggerCircuit& circuit) : TObject(circuit), - fTransformer(circuit.fTransformer), // do not copy, just pointed to - fCurrentSeg(circuit.fCurrentSeg), + fkTransformer(circuit.fkTransformer), // do not copy, just pointed to + fkCurrentSeg(circuit.fkCurrentSeg), fCurrentDetElem(circuit.fCurrentDetElem), fCurrentLocalBoard(circuit.fCurrentLocalBoard) { @@ -105,6 +139,11 @@ AliMUONTriggerCircuit::AliMUONTriggerCircuit(const AliMUONTriggerCircuit& circui fXpos11[i] = circuit.fXpos11[i]; fYpos11[i] = circuit.fYpos11[i]; fYpos21[i] = circuit.fYpos21[i]; + fZpos11[i] = circuit.fZpos11[i]; + fZpos21[i] = circuit.fZpos21[i]; + fXwidth11[i] = circuit.fXwidth11[i]; + fYwidth11[i] = circuit.fYwidth11[i]; + fYwidth21[i] = circuit.fYwidth21[i]; } } @@ -115,8 +154,8 @@ AliMUONTriggerCircuit& AliMUONTriggerCircuit::operator=(const AliMUONTriggerCirc if (this == &circuit) return *this; - fTransformer = circuit.fTransformer; - fCurrentSeg = circuit.fCurrentSeg; + fkTransformer = circuit.fkTransformer; + fkCurrentSeg = circuit.fkCurrentSeg; fCurrentDetElem = circuit.fCurrentDetElem; fCurrentLocalBoard = circuit.fCurrentLocalBoard; @@ -124,6 +163,11 @@ AliMUONTriggerCircuit& AliMUONTriggerCircuit::operator=(const AliMUONTriggerCirc fXpos11[i] = circuit.fXpos11[i]; fYpos11[i] = circuit.fYpos11[i]; fYpos21[i] = circuit.fYpos21[i]; + fZpos11[i] = circuit.fZpos11[i]; + fZpos21[i] = circuit.fZpos21[i]; + fXwidth11[i] = circuit.fXwidth11[i]; + fYwidth11[i] = circuit.fYwidth11[i]; + fYwidth21[i] = circuit.fYwidth21[i]; } return *this; @@ -131,7 +175,7 @@ AliMUONTriggerCircuit& AliMUONTriggerCircuit::operator=(const AliMUONTriggerCirc } //--------------------------------------------------------------------- -void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) +void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* const localBoard) { /// fill fYpos11 and fYpos21 -> y position of X declusterized strips @@ -142,15 +186,15 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) Int_t zeroDown = localBoard->GetSwitch(AliMpLocalBoard::kZeroDown); Int_t zeroUp = localBoard->GetSwitch(AliMpLocalBoard::kZeroUp); - Int_t iline = localBoard->GetPosition().GetFirst(); - Int_t icol = localBoard->GetPosition().GetSecond(); + Int_t iline = AliMp::PairFirst(localBoard->GetPosition()); + Int_t icol = AliMp::PairSecond(localBoard->GetPosition()); if ( iline == 5 ) --icol; //--- first plane ichamber = 10; fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); - fCurrentSeg = AliMpSegmentation::Instance() + fkCurrentSeg = AliMpSegmentation::Instance() ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); Int_t iFirstStrip = FirstStrip(localBoard); @@ -158,13 +202,13 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) Int_t iStripCircuit = 0; FillXstrips(icol, iFirstStrip, iLastStrip, - iStripCircuit, fYpos11[fCurrentLocalBoard]); + iStripCircuit, kTRUE); //--- second plane ichamber = 12; fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); - fCurrentSeg = AliMpSegmentation::Instance() + fkCurrentSeg = AliMpSegmentation::Instance() ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); // second plane middle part @@ -173,7 +217,7 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) iStripCircuit = 8; FillXstrips(icol, iFirstStripMiddle, iLastStripMiddle, - iStripCircuit, fYpos21[fCurrentLocalBoard]); + iStripCircuit, kFALSE); // second plane upper part if (zeroUp == 0) { // something up @@ -182,7 +226,7 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) Int_t icolUp = icol; // check if we need to move to another detElemId - AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(icol-1,iLastStripMiddle+1),kFALSE); + AliMpPad pad = fkCurrentSeg->PadByIndices(icol-1,iLastStripMiddle+1,kFALSE); if (pad.IsValid()) { // upper strips within same detElemId iFirstStripUp = iLastStripMiddle; @@ -192,7 +236,7 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) fCurrentDetElem = AliMpDDLStore::Instance()-> GetNextDEfromLocalBoard(fCurrentLocalBoard, ichamber); - fCurrentSeg = AliMpSegmentation::Instance() + fkCurrentSeg = AliMpSegmentation::Instance() ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); iFirstStripUp = 0; @@ -203,16 +247,20 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) iStripCircuit = 24; FillXstrips(icolUp, iFirstStripUp, iLastStripUp, - iStripCircuit, fYpos21[fCurrentLocalBoard]); + iStripCircuit, kFALSE); // fill strip between middle and upper part fYpos21[fCurrentLocalBoard][47] = (fYpos21[fCurrentLocalBoard][46] + fYpos21[fCurrentLocalBoard][48])/2.; + fZpos21[fCurrentLocalBoard][47] = (fZpos21[fCurrentLocalBoard][46] + + fZpos21[fCurrentLocalBoard][48])/2.; + fYwidth21[fCurrentLocalBoard][47] = (fYwidth21[fCurrentLocalBoard][46] + + fYwidth21[fCurrentLocalBoard][48])/2.; } // end of something up // restore current detElemId & segmentation fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); - fCurrentSeg = AliMpSegmentation::Instance() + fkCurrentSeg = AliMpSegmentation::Instance() ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); // second plane lower part @@ -222,7 +270,7 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) Int_t icolDo = icol; // check if we need to move to another detElemId - AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(icol-1,iFirstStripMiddle-1),kFALSE); + AliMpPad pad = fkCurrentSeg->PadByIndices(icol-1,iFirstStripMiddle-1,kFALSE); if (pad.IsValid()) { // lower strips within same detElemId iFirstStripDo = iFirstStripMiddle - 8; iLastStripDo = iFirstStripDo + 8; @@ -231,12 +279,11 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) fCurrentDetElem = AliMpDDLStore::Instance() ->GetPreviousDEfromLocalBoard(fCurrentLocalBoard, ichamber); - fCurrentSeg = AliMpSegmentation::Instance() + fkCurrentSeg = AliMpSegmentation::Instance() ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); // get iFirstStrip in this module - const AliMpTriggerSegmentation* trig = (AliMpTriggerSegmentation*)(fCurrentSeg); - const AliMpTrigger* t = trig->Slat(); + const AliMpTrigger* t = AliMpSegmentation::Instance()->GetTrigger(fkCurrentSeg); const AliMpSlat* slat = t->GetLayer(0); if (iline == 5) icolDo = icol + 1; // special case @@ -249,11 +296,15 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) iStripCircuit = 0; FillXstrips(icolDo, iFirstStripDo, iLastStripDo, - iStripCircuit, fYpos21[fCurrentLocalBoard]); + iStripCircuit, kFALSE); // fill strip between middle and upper part fYpos21[fCurrentLocalBoard][15] = (fYpos21[fCurrentLocalBoard][14] + fYpos21[fCurrentLocalBoard][16])/2.; + fZpos21[fCurrentLocalBoard][15] = (fZpos21[fCurrentLocalBoard][14] + + fZpos21[fCurrentLocalBoard][16])/2.; + fYwidth21[fCurrentLocalBoard][15] = (fYwidth21[fCurrentLocalBoard][14] + + fYwidth21[fCurrentLocalBoard][16])/2.; } // end of something down } @@ -261,32 +312,42 @@ void AliMUONTriggerCircuit::LoadYPos(AliMpLocalBoard* localBoard) //---------------------------------------------------------------------- void AliMUONTriggerCircuit::FillXstrips(const Int_t icol, const Int_t iFirstStrip, const Int_t iLastStrip, - Int_t liStripCircuit, TArrayF& ypos) + Int_t liStripCircuit, const Bool_t is11) { /// fill - Double_t xyGlobal[2] = {0.}; + TArrayF& ypos = (is11) ? fYpos11[fCurrentLocalBoard] : fYpos21[fCurrentLocalBoard]; + TArrayF& zpos = (is11) ? fZpos11[fCurrentLocalBoard] : fZpos21[fCurrentLocalBoard]; + TArrayF& ywidth = (is11) ? fYwidth11[fCurrentLocalBoard] : fYwidth21[fCurrentLocalBoard]; + + Double_t xyGlobal[3] = {0.}; for (Int_t istrip = iFirstStrip; istrip < iLastStrip; ++istrip) { - AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(icol-1,istrip),kTRUE); + AliMpPad pad = fkCurrentSeg->PadByIndices(icol-1,istrip,kTRUE); if ( !pad.IsValid() ) { StdoutToAliError(cout << "Pad not found in seg " << endl; - fCurrentSeg->Print(); + fkCurrentSeg->Print(); cout << " ix,iy=" << icol-1 << "," << istrip << endl; ); } - Float_t yDim = pad.Dimensions().Y(); // half size! + Float_t yDim = pad.GetDimensionY(); // half size! XYGlobal(pad,xyGlobal); ypos[2*liStripCircuit] = xyGlobal[1]; - if (istrip != (iLastStrip - 1)) ypos[2*liStripCircuit+1] = xyGlobal[1] + yDim; + zpos[2*liStripCircuit] = xyGlobal[2]; + ywidth[2*liStripCircuit] = 2. * yDim; + if (istrip != (iLastStrip - 1)) { + ypos[2*liStripCircuit+1] = xyGlobal[1] + yDim; + zpos[2*liStripCircuit+1] = xyGlobal[2]; + ywidth[2*liStripCircuit+1] = 2. * yDim; + } liStripCircuit++; } } //---------------------------------------------------------------------- -void AliMUONTriggerCircuit::LoadXPos(AliMpLocalBoard* localBoard) +void AliMUONTriggerCircuit::LoadXPos(AliMpLocalBoard* const localBoard) { /// fill fXpos11 -> x position of Y strips for the first plane only /// fXpos11 contains the x position of Y strip for the current circuit @@ -308,13 +369,13 @@ void AliMUONTriggerCircuit::LoadXPos(AliMpLocalBoard* localBoard) Int_t iLastStrip = 0; Bool_t doubling = kFALSE; - Int_t iline = localBoard->GetPosition().GetFirst(); - Int_t icol = localBoard->GetPosition().GetSecond(); + Int_t iline = AliMp::PairFirst(localBoard->GetPosition()); + Int_t icol = AliMp::PairSecond(localBoard->GetPosition()); if ( iline == 5 ) --icol; fCurrentDetElem = AliMpDDLStore::Instance()->GetDEfromLocalBoard(fCurrentLocalBoard, ichamber); - fCurrentSeg = AliMpSegmentation::Instance() + fkCurrentSeg = AliMpSegmentation::Instance() ->GetMpSegmentation(fCurrentDetElem, AliMp::GetCathodType(icathode)); // check if one needs a strip doubling or not @@ -325,8 +386,7 @@ void AliMUONTriggerCircuit::LoadXPos(AliMpLocalBoard* localBoard) if (zeroAllYLSB) iStripCircuit = 8; // get iFirstStrip in this module - const AliMpTriggerSegmentation* trig = (AliMpTriggerSegmentation*)(fCurrentSeg); - const AliMpTrigger* t = trig->Slat(); + const AliMpTrigger* t = AliMpSegmentation::Instance()->GetTrigger(fkCurrentSeg); const AliMpSlat* slat = t->GetLayer(0); const AliMpPCB* pcb = slat->GetPCB(icol-1); @@ -345,33 +405,36 @@ void AliMUONTriggerCircuit::FillYstrips(const Int_t iFirstStrip, const Int_t iLa const Bool_t doubling) { /// fill - Double_t xyGlobal[2] = {0.}; + Double_t xyGlobal[3] = {0.}; for (Int_t istrip = iFirstStrip; istrip < iLastStrip; ++istrip) { - AliMpPad pad = fCurrentSeg->PadByIndices(AliMpIntPair(istrip,0),kTRUE); + AliMpPad pad = fkCurrentSeg->PadByIndices(istrip,0,kTRUE); if ( !pad.IsValid() ) { StdoutToAliError(cout << "Pad not found in seg " << endl; - fCurrentSeg->Print(); + fkCurrentSeg->Print(); cout << " ix,iy=" << istrip << "," << 0 << endl; ); } - Float_t xDim = pad.Dimensions().X(); // half size! + Float_t xDim = pad.GetDimensionX(); // half size! XYGlobal(pad,xyGlobal); if (!doubling) { fXpos11[fCurrentLocalBoard].AddAt(xyGlobal[0], liStripCircuit); + fXwidth11[fCurrentLocalBoard].AddAt(2. * xDim, liStripCircuit); } else if (doubling) { fXpos11[fCurrentLocalBoard].AddAt(TMath::Sign(1.,xyGlobal[0]) * (TMath::Abs(xyGlobal[0]) - xDim/2.), 2*liStripCircuit); + fXwidth11[fCurrentLocalBoard].AddAt(2. * xDim, 2*liStripCircuit); fXpos11[fCurrentLocalBoard].AddAt(TMath::Sign(1.,xyGlobal[0]) * (TMath::Abs(fXpos11[fCurrentLocalBoard][2*liStripCircuit]) + xDim), 2*liStripCircuit + 1); + fXwidth11[fCurrentLocalBoard].AddAt(2. * xDim, 2*liStripCircuit + 1); } liStripCircuit++; @@ -386,19 +449,24 @@ void AliMUONTriggerCircuit::XYGlobal(const AliMpPad& pad, /// note: no need for transformation for pad dimensions // get the pad position and dimensions - Double_t xl1 = pad.Position().X(); - Double_t yl1 = pad.Position().Y(); - Double_t zg1 = 0; + Double_t xl1 = pad.GetPositionX(); + Double_t yl1 = pad.GetPositionY(); // positions from local to global - fTransformer->Local2Global(fCurrentDetElem, xl1, yl1, 0, - xyGlobal[0], xyGlobal[1], zg1); + fkTransformer->Local2Global(fCurrentDetElem, xl1, yl1, 0, + xyGlobal[0], xyGlobal[1], xyGlobal[2]); } //---------------------------------------------------------------------- //--- methods which return member data related info //---------------------------------------------------------------------- +//---------------------------------------------------------------------- +Float_t AliMUONTriggerCircuit::GetX11Pos(Int_t localBoardId, Int_t istrip) const +{ +/// returns X position of Y strip istrip in MC11 + return fXpos11[localBoardId][istrip]; +} Float_t AliMUONTriggerCircuit::GetY11Pos(Int_t localBoardId, Int_t istrip) const { /// returns Y position of X strip istrip in MC11 @@ -411,10 +479,32 @@ Float_t AliMUONTriggerCircuit::GetY21Pos(Int_t localBoardId, Int_t istrip) const return fYpos21[localBoardId][istrip]; } //---------------------------------------------------------------------- -Float_t AliMUONTriggerCircuit::GetX11Pos(Int_t localBoardId, Int_t istrip) const +Float_t AliMUONTriggerCircuit::GetZ11Pos(Int_t localBoardId, Int_t istrip) const { -/// returns X position of Y strip istrip in MC11 - return fXpos11[localBoardId][istrip]; +/// returns Z position of X strip istrip in MC11 + return fZpos11[localBoardId][istrip]; +} +//---------------------------------------------------------------------- +Float_t AliMUONTriggerCircuit::GetZ21Pos(Int_t localBoardId, Int_t istrip) const +{ +/// returns Z position of X strip istrip in MC21 + return fZpos21[localBoardId][istrip]; +} +Float_t AliMUONTriggerCircuit::GetX11Width(Int_t localBoardId, Int_t istrip) const +{ +/// returns width of Y strip istrip in MC11 + return fXwidth11[localBoardId][istrip]; +} +Float_t AliMUONTriggerCircuit::GetY11Width(Int_t localBoardId, Int_t istrip) const +{ +/// returns width of X strip istrip in MC11 + return fYwidth11[localBoardId][istrip]; +} +//---------------------------------------------------------------------- +Float_t AliMUONTriggerCircuit::GetY21Width(Int_t localBoardId, Int_t istrip) const +{ +/// returns width of X strip istrip in MC21 + return fYwidth21[localBoardId][istrip]; } //---------------------------------------------------------------------- @@ -425,8 +515,8 @@ Int_t AliMUONTriggerCircuit::FirstStrip(AliMpLocalBoard* localBoard) Int_t iFirstStrip = -1; Int_t boardNumber = atoi(localBoard->GetName()+6); - Int_t iline = localBoard->GetPosition().GetFirst(); - Int_t icol = localBoard->GetPosition().GetSecond(); + Int_t iline = AliMp::PairFirst(localBoard->GetPosition()); + Int_t icol = AliMp::PairSecond(localBoard->GetPosition()); if ( iline == 5 ) --icol; switch (boardNumber) @@ -448,3 +538,23 @@ Int_t AliMUONTriggerCircuit::FirstStrip(AliMpLocalBoard* localBoard) return iFirstStrip; } +//---------------------------------------------------------------------- +Float_t AliMUONTriggerCircuit::PtCal(Int_t localBoardId, Int_t istripX, Int_t idev, Int_t istripY) const{ +/// returns calculated pt for circuit/istripX/idev/istripY according +/// to the formula of the TRD. Note : idev (input) is in [0+30] + + Int_t istripX2=istripX+idev+1; // find istripX2 using istripX and idev + + Float_t yPosX1=fYpos11[localBoardId][istripX]; + Float_t yPosX2=fYpos21[localBoardId][istripX2]; + Float_t xPosY1=fXpos11[localBoardId][istripY]; + +// Z distance between IP and center of dipole + Float_t zf= 0.5 *(AliMUONConstants::CoilZ() + AliMUONConstants::YokeZ()); + Float_t z1=fZpos11[localBoardId][istripX]; + Float_t z2=fZpos21[localBoardId][istripX2]; + Float_t thetaDev=(1./TMath::Abs(zf))*(yPosX1*z2-yPosX2*z1)/(z2-z1); + Float_t xf=xPosY1*zf/z1; + Float_t yf=yPosX2-((yPosX2-yPosX1)*(z2-zf))/(z2-z1); + return (3.*0.3/TMath::Abs(thetaDev)) * TMath::Sqrt(xf*xf+yf*yf)/TMath::Abs(zf); +}