// //
///////////////////////////////////////////////////////////////////////////////
-#include <Riostream.h>
-#include <stdlib.h>
+#include "TBRIK.h"
+#include "TGeometry.h"
+#include "TLorentzVector.h"
+#include "TNode.h"
#include "TVirtualMC.h"
-#include <TBRIK.h>
-#include <TGeometry.h>
-#include <TLorentzVector.h>
-#include <TNode.h>
-#include <TObject.h>
-#include <TVirtualMC.h>
-
-#include "AliLog.h"
#include "AliConst.h"
+#include "AliLog.h"
+#include "AliMagF.h"
+#include "AliMC.h"
#include "AliRun.h"
-#include "AliTOFv4T0.h"
+
#include "AliTOFGeometry.h"
-#include "AliMC.h"
-
+#include "AliTOFGeometryV4.h"
+#include "AliTOFv4T0.h"
+
+extern TDirectory *gDirectory;
+extern TVirtualMC *gMC;
+
+extern AliRun *gAlice;
+
ClassImp(AliTOFv4T0)
-
+
//_____________________________________________________________________________
-AliTOFv4T0::AliTOFv4T0()
+ AliTOFv4T0::AliTOFv4T0():
+ fIdFTOA(-1),
+ fIdFTOB(-1),
+ fIdFTOC(-1),
+ fIdFLTA(-1),
+ fIdFLTB(-1),
+ fIdFLTC(-1),
+ fTOFHoles(kFALSE)
{
//
// Default constructor
}
//_____________________________________________________________________________
-AliTOFv4T0::AliTOFv4T0(const char *name, const char *title)
- : AliTOF(name,title,"tzero")
+AliTOFv4T0::AliTOFv4T0(const char *name, const char *title):
+ AliTOF(name,title,"tzero"),
+ fIdFTOA(-1),
+ fIdFTOB(-1),
+ fIdFTOC(-1),
+ fIdFLTA(-1),
+ fIdFLTB(-1),
+ fIdFLTC(-1),
+ fTOFHoles(kFALSE)
{
//
// Standard constructor
// put TOF
- AliModule* frame=gAlice->GetModule("FRAME");
+ AliModule* frame = (AliModule*)gAlice->GetModule("FRAME");
if(!frame) {
AliFatal("TOF needs FRAME to be present");
} else{
if (fTOFGeometry) delete fTOFGeometry;
- fTOFGeometry = new AliTOFGeometry();
+ fTOFGeometry = new AliTOFGeometryV4();
if(frame->IsVersion()==1) {
AliInfo(Form("Frame version %d", frame->IsVersion()));
fTOFHoles=true;}
}
fTOFGeometry->SetHoles(fTOFHoles);
+
+ // Save the geometry
+ TDirectory* saveDir = gDirectory;
+ gAlice->GetRunLoader()->CdGAFile();
+ fTOFGeometry->Write("TOFgeometry");
+ saveDir->cd();
+
}
//____________________________________________________________________________
TNode *node, *top;
const int kColorTOF = 27;
+ TGeometry *globalGeometry = (TGeometry*)gAlice->GetGeometry();
+
// Find top TNODE
- top = gAlice->GetGeometry()->GetNode("alice");
+ top = (TNode*)globalGeometry->GetNode("alice");
// Position the different copies
- const Float_t krTof =(AliTOFGeometry::Rmax()+AliTOFGeometry::Rmin())/2;
- const Float_t khTof = AliTOFGeometry::Rmax()-AliTOFGeometry::Rmin();
- const Int_t kNTof = AliTOFGeometry::NSectors();
+ const Float_t krTof =(fTOFGeometry->Rmax()+fTOFGeometry->Rmin())/2.;
+ const Float_t khTof = fTOFGeometry->Rmax()-fTOFGeometry->Rmin();
+ const Int_t kNTof = fTOFGeometry->NSectors();
const Float_t kPi = TMath::Pi();
const Float_t kangle = 2*kPi/kNTof;
Float_t ang;
// define offset for nodes
- Float_t zOffsetC = AliTOFGeometry::MaxhZtof() - AliTOFGeometry::ZlenC()*0.5;
- Float_t zOffsetB = AliTOFGeometry::MaxhZtof() - AliTOFGeometry::ZlenC() - AliTOFGeometry::ZlenB()*0.5;
+ Float_t zOffsetC = fTOFGeometry->MaxhZtof() - fTOFGeometry->ZlenC()*0.5;
+ Float_t zOffsetB = fTOFGeometry->MaxhZtof() - fTOFGeometry->ZlenC() - fTOFGeometry->ZlenB()*0.5;
Float_t zOffsetA = 0.;
// Define TOF basic volume
char nodeName3[7], nodeName4[7], rotMatNum[7];
new TBRIK("S_TOF_C","TOF box","void",
- AliTOFGeometry::StripLength()*0.5,khTof*0.5,AliTOFGeometry::ZlenC()*0.5);
+ fTOFGeometry->StripLength()*0.5, khTof*0.5, fTOFGeometry->ZlenC()*0.5);
new TBRIK("S_TOF_B","TOF box","void",
- AliTOFGeometry::StripLength()*0.5,khTof*0.5,AliTOFGeometry::ZlenB()*0.5);
+ fTOFGeometry->StripLength()*0.5, khTof*0.5, fTOFGeometry->ZlenB()*0.5);
new TBRIK("S_TOF_A","TOF box","void",
- AliTOFGeometry::StripLength()*0.5,khTof*0.5,AliTOFGeometry::ZlenA()*0.5);
+ fTOFGeometry->StripLength()*0.5, khTof*0.5, fTOFGeometry->ZlenA()*0.5);
for (Int_t nodeNum=1;nodeNum<19;nodeNum++){
ang = (4.5-nodeNum) * kangle;
top->cd();
- node = new TNode(nodeName0,nodeName0,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetC,rotMatNum);
+ node = new TNode(nodeName0,nodeName0,"S_TOF_C", krTof*TMath::Cos(ang), krTof*TMath::Sin(ang), zOffsetC,rotMatNum);
node->SetLineColor(kColorTOF);
fNodes->Add(node);
top->cd();
- node = new TNode(nodeName1,nodeName1,"S_TOF_C",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetC,rotMatNum);
+ node = new TNode(nodeName1,nodeName1,"S_TOF_C", krTof*TMath::Cos(ang), krTof*TMath::Sin(ang),-zOffsetC,rotMatNum);
node->SetLineColor(kColorTOF);
fNodes->Add(node);
top->cd();
- node = new TNode(nodeName2,nodeName2,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetB,rotMatNum);
+ node = new TNode(nodeName2,nodeName2,"S_TOF_B", krTof*TMath::Cos(ang), krTof*TMath::Sin(ang), zOffsetB,rotMatNum);
node->SetLineColor(kColorTOF);
fNodes->Add(node);
top->cd();
- node = new TNode(nodeName3,nodeName3,"S_TOF_B",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),-zOffsetB,rotMatNum);
+ node = new TNode(nodeName3,nodeName3,"S_TOF_B", krTof*TMath::Cos(ang), krTof*TMath::Sin(ang),-zOffsetB,rotMatNum);
node->SetLineColor(kColorTOF);
fNodes->Add(node);
top->cd();
- node = new TNode(nodeName4,nodeName4,"S_TOF_A",krTof*TMath::Cos(ang),krTof*TMath::Sin(ang),zOffsetA,rotMatNum);
+ node = new TNode(nodeName4,nodeName4,"S_TOF_A", krTof*TMath::Cos(ang), krTof*TMath::Sin(ang), zOffsetA,rotMatNum);
node->SetLineColor(kColorTOF);
fNodes->Add(node);
} // end loop on nodeNum
-}
-
+}
//_____________________________________________________________________________
void AliTOFv4T0::CreateGeometry()
//
// Definition of the Time Of Fligh Resistive Plate Chambers
// xFLT, yFLT, zFLT - sizes of TOF modules (large)
-
+
Float_t ycoor;
Float_t par[3];
Int_t *idtmed = fIdtmed->GetArray()-499;
Int_t idrotm[100];
Int_t nrot = 0;
- Float_t radius = AliTOFGeometry::Rmin()+2.;//cm
+ Float_t radius = fTOFGeometry->Rmin()+2.;//cm
-
par[0] = xtof * 0.5;
par[1] = ytof * 0.5;
par[2] = zlenC * 0.5;
Float_t db = 0.5; // cm
Float_t xFLT, xFST, yFLT, zFLTA, zFLTB, zFLTC;
- xFLT = AliTOFGeometry::StripLength();
+ xFLT = fTOFGeometry->StripLength();
yFLT = ytof;
zFLTA = zlenA;
zFLTB = zlenB;
zFLTC = zlenC;
- xFST = xFLT - AliTOFGeometry::DeadBndX()*2; // cm
+ xFST = xFLT - dynamic_cast<AliTOFGeometryV4*>(fTOFGeometry)->DeadBndX()*2.; // cm
// Sizes of MRPC pads
///////////////// Detector itself //////////////////////
- const Float_t kdeadBound = AliTOFGeometry::DeadBndZ(); //cm non-sensitive between the pad edge
+ const Float_t kdeadBound = dynamic_cast<AliTOFGeometryV4*>(fTOFGeometry)->DeadBndZ(); //cm non-sensitive between the pad edge
//and the boundary of the strip
- const Int_t knx = AliTOFGeometry::NpadX(); // number of pads along x
- const Int_t knz = AliTOFGeometry::NpadZ(); // number of pads along z
+ const Int_t knx = fTOFGeometry->NpadX(); // number of pads along x
+ const Int_t knz = fTOFGeometry->NpadZ(); // number of pads along z
- Float_t zSenStrip = AliTOFGeometry::ZPad() * AliTOFGeometry::NpadZ(); // cm
+ Float_t zSenStrip = fTOFGeometry->ZPad() * fTOFGeometry->NpadZ(); // cm
Float_t stripWidth = zSenStrip + 2*kdeadBound;
par[0] = xFLT*0.5;
ang /= kRaddeg;
Float_t zpos = tan(ang)*radius;
Float_t ypos= fTOFGeometry->GetHeights(2,istrip);
- gMC->Gspos("FSTR",AliTOFGeometry::NStripA()-istrip,"FLTA",0.,ypos, zpos,idrotm[0], "ONLY");
+ gMC->Gspos("FSTR",fTOFGeometry->NStripA()-istrip,"FLTA",0.,ypos, zpos,idrotm[0], "ONLY");
AliDebug(1, Form("y = %f, z = %f, , z coord = %f, Rot ang = %f, St. %2i",ypos,zpos,tan(ang)*radius ,ang*kRaddeg,istrip));
}
////////// Layers after strips /////////////////
// Al Layer thickness (2.3mm) factor 0.7
- Float_t overSpace = AliTOFGeometry::OverSpc();//cm
+ Float_t overSpace = dynamic_cast<AliTOFGeometryV4*>(fTOFGeometry)->OverSpc();//cm
par[0] = xFLT*0.5;
par[1] = 0.115*0.7; // factor 0.7
gMC->Gdopt("hide","off");
}
//_____________________________________________________________________________
-void AliTOFv4T0::DrawDetectorModules()
+void AliTOFv4T0::DrawDetectorModules() const
{
//
// Draw a shaded view of the TOF detector version 4
}
//_____________________________________________________________________________
-void AliTOFv4T0::DrawDetectorStrips()
+void AliTOFv4T0::DrawDetectorStrips() const
{
//
// Draw a shaded view of the TOF strips for version 4
//
// Define materials for the Time Of Flight
//
- AliTOF::CreateMaterials();
+ //AliTOF::CreateMaterials();
+
+ //
+ // Defines TOF materials for all versions
+ // Revision: F. Pierella 18-VI-2002
+ //
+
+ AliMagF *magneticField = (AliMagF*)gAlice->Field();
+
+ Int_t isxfld = magneticField->Integ();
+ Float_t sxmgmx = magneticField->Max();
+
+ //--- Quartz (SiO2) to simulate float glass
+ // density tuned to have correct float glass
+ // radiation length
+ Float_t aq[2] = { 28.0855,15.9994 };
+ Float_t zq[2] = { 14.,8. };
+ Float_t wq[2] = { 1.,2. };
+ Float_t dq = 2.55; // std value: 2.2
+ Int_t nq = -2;
+
+ // --- Freon C2F4H2 (TOF-TDR pagg.)
+ // Geant Manual CONS110-1, pag. 43 (Geant, Detector Description and Simulation Tool)
+ Float_t afre[3] = {12.011,18.998,1.007};
+ Float_t zfre[3] = { 6., 9., 1.};
+ Float_t wfre[3] = { 2., 4., 2.};
+ Float_t densfre = 0.00375;
+// http://www.fi.infn.it/sezione/prevprot/gas/freon.html
+ Int_t nfre = -3;
+/*
+ //-- Isobutane quencher C4H10 (5% in the sensitive mixture)
+ Float_t aiso[2] = {12.011,1.007};
+ Float_t ziso[2] = { 6., 1.};
+ Float_t wiso[2] = { 4., 10.};
+ Float_t densiso = .......; // (g/cm3) density
+ Int_t nfre = -2; // < 0 i.e. proportion by number of atoms of each kind
+ //-- SF6 (5% in the sensitive mixture)
+ Float_t asf[3] = {32.066,18.998};
+ Float_t zsf[3] = { 16., 9.};
+ Float_t wsf[3] = { 1., 6.};
+ Float_t denssf = .....; // (g/cm3) density
+ Int_t nfre = -2; // < 0 i.e. proportion by number of atoms of each kind
+*/
+ // --- CO2
+ Float_t ac[2] = {12.,16.};
+ Float_t zc[2] = { 6., 8.};
+ Float_t wc[2] = { 1., 2.};
+ Float_t dc = .001977;
+ Int_t nc = -2;
+ // For mylar (C5H4O2)
+ Float_t amy[3] = { 12., 1., 16. };
+ Float_t zmy[3] = { 6., 1., 8. };
+ Float_t wmy[3] = { 5., 4., 2. };
+ Float_t dmy = 1.39;
+ Int_t nmy = -3;
+ // For polyethilene (CH2) - honeycomb -
+ Float_t ape[2] = { 12., 1. };
+ Float_t zpe[2] = { 6., 1. };
+ Float_t wpe[2] = { 1., 2. };
+ Float_t dpe = 0.935*0.479; //To have 1%X0 for 1cm as for honeycomb
+ Int_t npe = -2;
+ // --- G10
+ Float_t ag10[4] = { 12.,1.,16.,28. };
+ Float_t zg10[4] = { 6.,1., 8.,14. };
+ Float_t wmatg10[4] = { .259,.288,.248,.205 };
+ Float_t densg10 = 1.7;
+ Int_t nlmatg10 = -4;
+
+ // plexiglass CH2=C(CH3)CO2CH3
+ Float_t aplex[3] = { 12.,1.,16.};
+ Float_t zplex[3] = { 6.,1., 8.};
+ Float_t wmatplex[3] = {5.,8.,2.};
+ Float_t densplex =1.16;
+ Int_t nplex = -3;
+
+ // ---- ALUMINA (AL203)
+ Float_t aal[2] = { 27.,16.};
+ Float_t zal[2] = { 13., 8.};
+ Float_t wmatal[2] = { 2.,3. };
+ Float_t densal = 2.3;
+ Int_t nlmatal = -2;
+ // -- Water
+ Float_t awa[2] = { 1., 16. };
+ Float_t zwa[2] = { 1., 8. };
+ Float_t wwa[2] = { 2., 1. };
+ Float_t dwa = 1.0;
+ Int_t nwa = -2;
+
+// stainless steel
+ Float_t asteel[4] = { 55.847,51.9961,58.6934,28.0855 };
+ Float_t zsteel[4] = { 26.,24.,28.,14. };
+ Float_t wsteel[4] = { .715,.18,.1,.005 };
+
+ //AliMaterial(0, "Vacuum$", 1e-16, 1e-16, 1e-16, 1e16, 1e16);
+
+ // AIR
+ Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
+ Float_t zAir[4]={6.,7.,8.,18.};
+ Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
+ Float_t dAir = 1.20479E-3;
+
+ AliMixture( 1, "Air$", aAir, zAir, dAir, 4, wAir);
+
+ AliMaterial( 2, "Cu $", 63.54, 29.0, 8.96, 1.43, 14.8);
+ AliMaterial( 3, "C $", 12.01, 6.0, 2.265,18.8, 74.4);
+ AliMixture ( 4, "Polyethilene$", ape, zpe, dpe, npe, wpe);
+ AliMixture ( 5, "G10$", ag10, zg10, densg10, nlmatg10, wmatg10);
+ AliMixture ( 6, "PLE$", aplex, zplex, densplex, nplex, wmatplex);
+ AliMixture ( 7, "CO2$", ac, zc, dc, nc, wc);
+ AliMixture ( 8, "ALUMINA$", aal, zal, densal, nlmatal, wmatal);
+ AliMaterial( 9, "Al $", 26.98, 13., 2.7, 8.9, 37.2);
+ AliMaterial(10, "C-TRD$", 12.01, 6., 2.265*18.8/69.282*15./100, 18.8, 74.4); // for 15%
+ AliMixture (11, "Mylar$", amy, zmy, dmy, nmy, wmy);
+ AliMixture (12, "Freon$", afre, zfre, densfre, nfre, wfre);
+ AliMixture (13, "Glass$", aq, zq, dq, nq, wq);
+ AliMixture (14, "Water$", awa, zwa, dwa, nwa, wwa);
+ AliMixture (15, "STAINLESS STEEL$", asteel, zsteel, 7.88, 4, wsteel);
+
+ Float_t epsil, stmin, deemax, stemax;
+
+ // Previous data
+ // EPSIL = 0.1 ! Tracking precision,
+ // STEMAX = 0.1 ! Maximum displacement for multiple scattering
+ // DEEMAX = 0.1 ! Maximum fractional energy loss, DLS
+ // STMIN = 0.1
+ //
+ // New data
+ epsil = .001; // Tracking precision,
+ stemax = -1.; // Maximum displacement for multiple scattering
+ deemax = -.3; // Maximum fractional energy loss, DLS
+ stmin = -.8;
+
+ AliMedium( 1, "Air$" , 1, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium( 2, "Cu $" , 2, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium( 3, "C $" , 3, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium( 4, "Pol$" , 4, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium( 5, "G10$" , 5, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium( 6, "PLE$" , 6, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium( 7, "CO2$" , 7, 0, isxfld, sxmgmx, 10., -.01, -.1, .01, -.01);
+ AliMedium( 8,"ALUMINA$", 8, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium( 9,"Al Frame$",9, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(10, "DME-S$", 6, 1, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(11, "C-TRD$", 10, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(12, "Myl$" , 11, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(13, "Fre$" , 12, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(14, "Fre-S$", 12, 1, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(15, "Glass$", 13, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(16, "Water$", 14, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+ AliMedium(17, "STEEL$", 15, 0, isxfld, sxmgmx, 10., stemax, deemax, epsil, stmin);
+
}
//_____________________________________________________________________________
TLorentzVector mom, pos;
Float_t xm[3],pm[3],xpad[3],ppad[3];
- Float_t hits[14],phi,phid,z;
+ Float_t hits[14];
Int_t vol[5];
Int_t sector, plate, padx, padz, strip;
Int_t copy, padzid, padxid, stripid, i;
Int_t *idtmed = fIdtmed->GetArray()-499;
Float_t incidenceAngle;
- if(gMC->GetMedium()==idtmed[513] &&
- gMC->IsTrackEntering() && gMC->TrackCharge()
- && gMC->CurrentVolID(copy)==fIdSens)
+ if(
+ gMC->IsTrackEntering()
+ && gMC->TrackCharge()
+ //&& gMC->GetMedium()==idtmed[513]
+ && gMC->CurrentMedium()==idtmed[513]
+ && gMC->CurrentVolID(copy)==fIdSens
+ )
{
- AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
+ AliMC *mcApplication = (AliMC*)gAlice->GetMCApp();
+
+ AddTrackReference(mcApplication->GetCurrentTrackNumber());
+ //AddTrackReference(gAlice->GetMCApp()->GetCurrentTrackNumber());
// getting information about hit volumes
incidenceAngle = TMath::ACos(ppad[1])*kRaddeg;
- z = pos[2];
+ const char * pathA="FTOA";
+ const char * pathB="FTOB";
+ const char * pathC="FTOC";
+ const char * path71="B071";
+ const char * path75="B075";
+ const char * path74="B074";
+ const char* volpath;
- plate = -1;
+ Int_t index=0;
+ volpath=gMC->CurrentVolOffName(6);
+ index=gMC->CurrentVolOffID(6,copy);
+ index=copy;
+
+
+ plate=-1;
+ if(strcmp(pathC,volpath)==0 && index==1)plate=0;
+ if(strcmp(pathB,volpath)==0 && index==1)plate=1;
+ if(strcmp(pathA,volpath)==0 && index==0)plate=2;
+ if(strcmp(pathB,volpath)==0 && index==2)plate=3;
+ if(strcmp(pathC,volpath)==0 && index==2)plate=4;
- if (TMath::Abs(z) <= AliTOFGeometry::ZlenA()*0.5) plate = 2;
- if (z < (AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB()) &&
- z > AliTOFGeometry::ZlenA()*0.5) plate = 1;
- if (z >-(AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB()) &&
- z < -AliTOFGeometry::ZlenA()*0.5) plate = 3;
- if (z > (AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB())) plate = 0;
- if (z <-(AliTOFGeometry::ZlenA()*0.5+AliTOFGeometry::ZlenB())) plate = 4;
if (plate==0) strip=fTOFGeometry->NStripC()-strip;
- phi = pos.Phi();
- if (phi>=0.) phid = phi*kRaddeg;
- else phid = phi*kRaddeg + 360.;
+ volpath=gMC->CurrentVolOffName(8);
+ index=gMC->CurrentVolOffID(8,copy);
+ index=copy;
- sector = Int_t (phid/20.);
+ sector=-1;
+ if(strcmp(path71,volpath)==0 && index <6) sector=12+index;
+ if(strcmp(path71,volpath)==0 && index >=6) sector=index-3;
+ if(strcmp(path75,volpath)==0) sector=index-1;
+ if(strcmp(path74,volpath)==0) sector=10+index;
for(i=0;i<3;++i) {
hits[i] = pos[i];
vol[3]= padx;
vol[4]= padz;
- AddT0Hit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
+ AddT0Hit(mcApplication->GetCurrentTrackNumber(),vol, hits);
+ //AddT0Hit(gAlice->GetMCApp()->GetCurrentTrackNumber(),vol, hits);
}
}
git://git.uio.no / u / mrichter / AliRoot.git / blobdiff