1 //_____________________________________________________________________
7 * @param vz Z--coordinate of interaction point
8 * @param nDead On returm the number of dead strips
9 * @param deadScript Output stream for dead strips
13 * @ingroup pwglf_forward_scripts_corr
15 TH2D* MakeOneRing(UShort_t d,
19 std::ostream* deadScript)
21 AliFMDGeometry* geom = AliFMDGeometry::Instance();
22 AliFMDParameters* pars = AliFMDParameters::Instance();
24 UShort_t nS = (r == 'I' || r == 'i' ? 20 : 40);
25 UShort_t nT = (r == 'I' || r == 'i' ? 512 : 256);
27 // Make our two histograms
28 TH2D* hAll = new TH2D("all","All",200,-4,6,nS,0,2*TMath::Pi());
29 hAll->SetXTitle("#eta");
30 hAll->SetYTitle("#phi");
32 hAll->SetDirectory(0);
33 TH2D* hOK = static_cast<TH2D*>(hAll->Clone());
37 *deadScript << "\n // FMD" << d << r << std::endl;
38 // Loop over all sectors and strips in this ring
41 Int_t nPhi = hAll->GetNbinsY();
42 for (UShort_t s = 0; s < nS; s++) {
43 for (UShort_t t = 0; t < nT; t++) {
44 // Get eta,phi by quering the geometry (first for (x,y,z), then
45 // correcting for the vertex position, and then calculating
48 geom->Detector2XYZ(d, r, s, t, x, y, z);
50 Double_t q, eta, phi, theta;
51 AliFMDGeometry::XYZ2REtaPhiTheta(x, y, z, q, eta, phi, theta);
52 if (phi < 0) phi += 2*TMath::Pi();
54 // Check if this is a dead channel or not
55 Bool_t isDead = pars->IsDead(d, r, s, t);
57 // Special check for FMD2i - upper part of sectors 16/17 have
58 // have anomalous gains and/or noise - common sources are
59 // power regulartors for bias currents and the like
61 if(d==2 && r=='I' && VA>1 && (s==16 || s==17)) isDead =true;
63 // Find the eta bin number and corresponding overflow bin
64 Int_t etaBin = hAll->GetXaxis()->FindBin(eta);
65 Int_t ovrBin = hAll->GetBin(etaBin, nPhi+1);
67 // Increment all histogram
69 hAll->AddBinContent(ovrBin);
72 // If not dead, increment OK histogram
75 hOK->AddBinContent(ovrBin);
81 *deadScript << " filter->AddDead(" << d << ",'" << r << "',"
82 << s << ',' << t << ");" << std::endl;
86 // Divide out the efficiency.
87 // Note, that the overflow bins along eta now contains the ratio
88 // nOK/nAll Strips for a given eta bin.
89 hOK->Divide(hOK,hAll,1,1,"B");
91 // Invert overflow bin
92 for (Int_t etaBin = 1; etaBin <= hOK->GetNbinsX(); etaBin++) {
93 Double_t ovr = hOK->GetBinContent(etaBin, nPhi+1);
94 Double_t novr = (ovr < 1e-12 ? 0 : 1./ovr);
95 hOK->SetBinContent(etaBin, nPhi+1, novr);
97 if (ovr > 0 && ovr != 1)
98 Info("", "Setting overflow bin (%3d,%3d) to 1/%f=%f", etaBin, nPhi+1,
99 ovr, hOK->GetBinContent(etaBin, nPhi+1));
105 Printf("=== FMD%d%c at vz=%+5.1f - %d/%d=%3d%% OK (w/overflow)",
106 d, r, vz, nOK, nAll, (100*nOK)/nAll);
112 //_____________________________________________________________________
116 * @param runNo Run number
117 * @param nVtxBins Number of @f$IP_{z}@f$ bins
118 * @param vtxLow Least @f$IP_{z}@f$
119 * @param vtxHigh Largest @f$IP_{z}@f$
121 * @ingroup pwglf_forward_scripts_corr
123 void ExtractAcceptance(Int_t runNo=121526,
128 const char* fwd = "$ALICE_ROOT/PWGLF/FORWARD/analysis2";
129 gSystem->AddIncludePath(Form("-I%s", fwd));
130 gROOT->Macro(Form("%s/scripts/LoadLibs.C", fwd));
132 // gSystem->Load("libANALYSIS");
133 // gSystem->Load("libANALYSISalice");
134 // gSystem->Load("libPWGLFforward2");
135 // Float_t delta = (vtxHigh - vtxLow) / (Float_t)nVtxBins;
137 Bool_t gridOnline = kTRUE;
138 if(!(TGrid::Connect("alien://",0,0,"t")))
141 // --- Figure out the year --------------------------------------
143 if (runNo <= 99999) year = 2009;
144 else if (runNo <= 139667) year = 2010;
145 else if (runNo <= 170718) year = 2011;
146 else if (runNo <= 194306) year = 2012;
147 else if (runNo <= 197709) year = 2013;
149 Error("", "Couldn't deduce the year from the run number");
153 // --- Initialisations ------------------------------------------
155 Printf("=== Setting up OCDB");
157 AliCDBManager* cdb = AliCDBManager::Instance();
159 cdb->SetDefaultStorageFromRun(runNo);
160 // cdb->SetDefaultStorage(Form("alien://Folder=/alice/data/%4d/OCDB", year));
163 cdb->SetDefaultStorage("local://$(ALICE_ROOT)/OCDB");
167 Printf("=== Loading geometry");
168 AliGeomManager::LoadGeometry();
170 // Get an initialize parameters
171 Printf("=== Intialising parameters");
172 AliFMDParameters* pars = AliFMDParameters::Instance();
175 // Get an initialise geometry
176 Printf("=== Initialising geomtry");
177 AliFMDGeometry* geom = AliFMDGeometry::Instance();
179 geom->InitTransformations();
181 // --- Get the general run parameters ------------------------------
182 AliCDBEntry* grpE = cdb->Get("GRP/GRP/Data");
184 AliWarningF("No GRP entry found for run %d", runNo);
187 AliGRPObject* grp = static_cast<AliGRPObject*>(grpE->GetObject());
189 AliWarningF("No GRP object found for run %d", runNo);
192 Float_t beamE = grp->GetBeamEnergy();
193 TString beamT = grp->GetBeamType();
195 // This isn't really needed as the acceptance map is indifferent to
196 // the field settings.
197 Float_t l3cur = grp->GetL3Current(AliGRPObject::kMean);
198 Char_t l3pol = grp->GetL3Polarity();
199 Bool_t l3lhc = grp->IsPolarityConventionLHC();
200 Bool_t l3uni = grp->IsUniformBMap();
202 AliMagF::CreateFieldMap(TMath::Abs(l3cur) * (l3pol ? -1:1), 0,
203 (l3lhc ? 0 : 1), l3uni, beamE, beamT.Data());
204 Float_t l3fld = fldM->SolenoidField();
207 UShort_t sys = AliForwardUtil::ParseCollisionSystem(beamT);
208 UShort_t sNN = AliForwardUtil::ParseCenterOfMassEnergy(sys, 2 * beamE);
209 Short_t fld = 0; // AliForwardUtil::ParseMagneticField(l3fld);
210 Printf("=== Run=%d, year=%d, sys=%d, sNN=%d, fld=%d",
211 runNo, year, sys, sNN, fld);
213 // --- Output object -----------------------------------------------
214 // Make our correction object
215 AliFMDCorrAcceptance* corr = new AliFMDCorrAcceptance();
216 corr->SetVertexAxis(nVtxBins, vtxLow, vtxHigh);
218 // --- Output script -----------------------------------------------
219 std::ofstream deadScript("deadstrips.C");
220 deadScript << "// Automatically generaeted by ExtractAcceptance.C\n"
221 << "// Add additional dead strips to sharing filter\n"
222 << "// Information taken from OCDB entry for\n"
224 << "// run = " << runNo << "\n"
225 << "// year = " << year << "\n"
226 << "// system = " << sys << "\n"
227 << "// sqrt{sNN} = " << sNN << "GeV\n"
228 << "// L3 field = " << fld << "kG\n"
229 << "void deadstrips(AliFMDSharingFilter* filter)\n"
232 // --- Loop over verticies and rings -------------------------------
234 Bool_t gotDead = false;
235 Float_t dV = (vtxHigh - vtxLow) / nVtxBins;
236 Printf("=== Looping over vertices: %d bins from %+6.2f to %+6.2f "
237 "in steps of %+6.2f",
238 nVtxBins, vtxLow, vtxHigh, dV);
239 for (Double_t v = vtxLow+dV/2; v < vtxHigh; v += dV) {
240 for(UShort_t d = 1; d <= 3;d++) {
241 UShort_t nR = (d == 1 ? 1 : 2);
242 for (UShort_t q = 0; q < nR; q++) {
243 Char_t r = (q == 0 ? 'I' : 'O');
245 // Delegate to other function
247 TH2D* ratio = MakeOneRing(d, r, v, nLocal,
248 !gotDead ? &deadScript : 0);
251 Warning("ExtractAcceptance", "Didn't get correction from "
252 "FMD%d%c @ vz=%+6.2fcm", d, r, v);
255 // Printf("v=%+6.2f FMD%d%c, got %d dead strips", v, d, r, nLocal);
257 // Set the correction
258 corr->SetCorrection(d, r, v, ratio);
263 corr->SetHasOverflow();
268 << "// EOF" << std::endl;
272 Printf("=== Writing to disk");
273 AliForwardCorrectionManager& cm = AliForwardCorrectionManager::Instance();
274 if (!cm.Store(corr, runNo, sys, sNN, fld, false, false,
275 "fmd_corrections.root")) {
276 Error("", "Failed to store acceptance correction in local file");
280 std::ofstream f("Upload.C");
281 f << "// Generated by ExtractELoss.C\n"
282 << "TString MakeDest(const TString& dest, const TString& fname)\n"
284 << " TString tmp(dest);\n"
285 << " if (!tmp.IsNull()) {\n"
286 << " if (!tmp.EndsWith(\"/\")) tmp.Append(\"/\");\n"
287 << " tmp.Append(fname);\n"
291 << "void Upload(const TString& dest=\"\")\n"
293 << " gROOT->Macro(\"" << fwd << "/scripts/LoadLibs.C\");\n"
295 << " const char* fmdFile = \"fmd_corrections.root\";\n"
296 << " TString fdest = MakeDest(dest, fmdFile);\n"
298 << " AliForwardCorrectionManager::Instance().Append(fmdFile, fdest);\n"
304 Info("ExtracAcceptance",
305 "Run generated Upload.C(DEST) script to copy files in place");