1 /**************************************************************************
2 * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. *
4 * Author: The ALICE Off-line Project. *
5 * Contributors are mentioned in the code where appropriate. *
7 * Permission to use, copy, modify and distribute this software and its *
8 * documentation strictly for non-commercial purposes is hereby granted *
9 * without fee, provided that the above copyright notice appears in all *
10 * copies and that both the copyright notice and this permission notice *
11 * appear in the supporting documentation. The authors make no claims *
12 * about the suitability of this software for any purpose. It is *
13 * provided "as is" without express or implied warranty. *
14 **************************************************************************/
17 //_________________________________________________________________________
18 // Base Class for PHOS description:
19 // PHOS consists of a PbWO4 calorimeter (EMCA) and a gazeous charged
20 // particles detector (CPV or PPSD).
21 // The only provided method here is CreateMaterials,
22 // which defines the materials common to all PHOS versions.
24 //*-- Author: Laurent Aphecetche & Yves Schutz (SUBATECH)
25 //////////////////////////////////////////////////////////////////////////////
28 // --- ROOT system ---
32 #include <TVirtualMC.h>
37 // --- Standard library ---
39 // --- AliRoot header files ---
42 #include "AliPHOSGetter.h"
44 #include "AliPHOSDigitizer.h"
45 #include "AliPHOSSDigitizer.h"
46 #include "AliPHOSDigit.h"
47 #include "AliAltroBuffer.h"
52 Double_t AliPHOS::fgCapa = 1.; // 1pF
53 Int_t AliPHOS::fgOrder = 2 ;
54 Double_t AliPHOS::fgTimeMax = 2.56E-5 ; // each sample is over 100 ns fTimeMax/fTimeBins
55 Double_t AliPHOS::fgTimePeak = 4.1E-6 ; // 4 micro seconds
56 Double_t AliPHOS::fgTimeTrigger = 100E-9 ; // 100ns, just for a reference
58 //____________________________________________________________________________
59 AliPHOS:: AliPHOS() : AliDetector()
69 //____________________________________________________________________________
70 AliPHOS::AliPHOS(const char* name, const char* title): AliDetector(name, title)
72 // ctor : title is used to identify the layout
77 fHighCharge = 8.2 ; // adjusted for a high gain range of 5.12 GeV (10 bits)
79 fHighLowGainFactor = 16. ; // adjusted for a low gain range of 82 GeV (10 bits)
80 fLowGainOffset = GetGeometry()->GetNModules() + 1 ;
81 // offset added to the module id to distinguish high and low gain data
84 //____________________________________________________________________________
89 //____________________________________________________________________________
90 void AliPHOS::Copy(AliPHOS & phos)
92 // copy method to be used byy the cpy ctor
94 // fQATask = AliPHOSQAChecker::Copy(*(phos.fQATask)) ;
95 phos.fTreeQA = fTreeQA->CloneTree() ;
96 phos.fHighCharge = fHighCharge ;
97 phos.fHighGain = fHighGain ;
98 phos.fHighLowGainFactor = fHighLowGainFactor ;
99 phos.fLowGainOffset = fLowGainOffset;
102 //____________________________________________________________________________
103 AliDigitizer* AliPHOS::CreateDigitizer(AliRunDigitizer* manager) const
105 return new AliPHOSDigitizer(manager);
108 //____________________________________________________________________________
109 void AliPHOS::CreateMaterials()
111 // Definitions of materials to build PHOS and associated tracking media.
112 // media number in idtmed are 699 to 798.
114 // --- The PbWO4 crystals ---
115 Float_t aX[3] = {207.19, 183.85, 16.0} ;
116 Float_t zX[3] = {82.0, 74.0, 8.0} ;
117 Float_t wX[3] = {1.0, 1.0, 4.0} ;
120 AliMixture(0, "PbWO4$", aX, zX, dX, -3, wX) ;
123 // --- The polysterene scintillator (CH) ---
124 Float_t aP[2] = {12.011, 1.00794} ;
125 Float_t zP[2] = {6.0, 1.0} ;
126 Float_t wP[2] = {1.0, 1.0} ;
129 AliMixture(1, "Polystyrene$", aP, zP, dP, -2, wP) ;
132 AliMaterial(2, "Al$", 26.98, 13., 2.7, 8.9, 999., 0, 0) ;
133 // --- Absorption length is ignored ^
135 // --- Tyvek (CnH2n) ---
136 Float_t aT[2] = {12.011, 1.00794} ;
137 Float_t zT[2] = {6.0, 1.0} ;
138 Float_t wT[2] = {1.0, 2.0} ;
141 AliMixture(3, "Tyvek$", aT, zT, dT, -2, wT) ;
143 // --- Polystyrene foam ---
144 Float_t aF[2] = {12.011, 1.00794} ;
145 Float_t zF[2] = {6.0, 1.0} ;
146 Float_t wF[2] = {1.0, 1.0} ;
149 AliMixture(4, "Foam$", aF, zF, dF, -2, wF) ;
152 Float_t aTIT[3] = {47.88, 26.98, 54.94} ;
153 Float_t zTIT[3] = {22.0, 13.0, 25.0} ;
154 Float_t wTIT[3] = {69.0, 6.0, 1.0} ;
157 AliMixture(5, "Titanium$", aTIT, zTIT, dTIT, -3, wTIT);
160 AliMaterial(6, "Si$", 28.0855, 14., 2.33, 9.36, 42.3, 0, 0) ;
164 // --- Foam thermo insulation ---
165 Float_t aTI[2] = {12.011, 1.00794} ;
166 Float_t zTI[2] = {6.0, 1.0} ;
167 Float_t wTI[2] = {1.0, 1.0} ;
170 AliMixture(7, "Thermo Insul.$", aTI, zTI, dTI, -2, wTI) ;
173 Float_t aTX[4] = {16.0, 28.09, 12.011, 1.00794} ;
174 Float_t zTX[4] = {8.0, 14.0, 6.0, 1.0} ;
175 Float_t wTX[4] = {292.0, 68.0, 462.0, 736.0} ;
178 AliMixture(8, "Textolit$", aTX, zTX, dTX, -4, wTX) ;
181 Float_t aFR[3] = {28.0855, 15.9994, 17.749} ;
182 Float_t zFR[3] = {14., 8., 8.875} ;
183 Float_t wFR[3] = {.28, .32, .4} ;
186 AliMixture(9, "FR4$", aFR, zFR, dFR, -3, wFR) ;
188 // --- The Composite Material for micromegas (so far polyetylene) ---
189 Float_t aCM[2] = {12.01, 1.} ;
190 Float_t zCM[2] = {6., 1.} ;
191 Float_t wCM[2] = {1., 2.} ;
192 Float_t dCM = 0.935 ;
194 AliMixture(10, "Compo Mat$", aCM, zCM, dCM, -2, wCM) ;
197 AliMaterial(11, "Cu$", 63.546, 29, 8.96, 1.43, 14.8, 0, 0) ;
199 // --- G10 : Printed Circuit material ---
200 Float_t aG10[4] = { 12., 1., 16., 28.} ;
201 Float_t zG10[4] = { 6., 1., 8., 14.} ;
202 Float_t wG10[4] = { .259, .288, .248, .205} ;
205 AliMixture(12, "G10$", aG10, zG10, dG10, -4, wG10);
208 AliMaterial(13, "Pb$", 207.2, 82, 11.35, 0.56, 0., 0, 0) ;
210 // --- The gas mixture ---
212 Float_t aCO[2] = {12.0, 16.0} ;
213 Float_t zCO[2] = {6.0, 8.0} ;
214 Float_t wCO[2] = {1.0, 2.0} ;
215 Float_t dCO = 0.001977 ;
217 AliMixture(14, "CO2$", aCO, zCO, dCO, -2, wCO);
220 Float_t dAr = 0.001782 ;
221 AliMaterial(15, "Ar$", 39.948, 18.0, dAr, 14.0, 0., 0, 0) ;
224 Char_t namate[21]="";
230 Float_t absL, radL, density ;
234 gMC->Gfmate((*fIdmate)[15], namate, aGM[0], zGM[0], density, radL, absL, buf, nbuf) ; // Get properties of Ar
235 gMC->Gfmate((*fIdmate)[14], namate, aGM[1], zGM[1], density, radL, absL, buf, nbuf) ; // Get properties of CO2
238 // Create gas mixture
240 Float_t arContent = 0.80 ; // Ar-content of the Ar/CO2-mixture (80% / 20%)
243 wGM[1] = 1. - arContent ;
244 dGM = wGM[0] * dAr + wGM[1] * dCO;
247 AliMixture(16, "ArCO2$", aGM, zGM, dGM, 2, wGM) ;
249 // --- Stainless steel (let it be pure iron) ---
250 AliMaterial(17, "Steel$", 55.845, 26, 7.87, 1.76, 0., 0, 0) ;
253 // --- Fiberglass ---
254 Float_t aFG[4] = {16.0, 28.09, 12.011, 1.00794} ;
255 Float_t zFG[4] = {8.0, 14.0, 6.0, 1.0} ;
256 Float_t wFG[4] = {292.0, 68.0, 462.0, 736.0} ;
259 AliMixture(18, "Fibergla$", aFG, zFG, dFG, -4, wFG) ;
261 // --- Cables in Air box ---
264 Float_t aCA[4] = { 1.,12.,55.8,63.5 };
265 Float_t zCA[4] = { 1.,6.,26.,29. };
266 Float_t wCA[4] = { .014,.086,.42,.48 };
267 Float_t dCA = 0.8 ; //this density is raw estimation, if you know better - correct
269 AliMixture(19, "Cables $", aCA, zCA, dCA, -4, wCA) ;
273 Float_t aAir[4]={12.0107,14.0067,15.9994,39.948};
274 Float_t zAir[4]={6.,7.,8.,18.};
275 Float_t wAir[4]={0.000124,0.755267,0.231781,0.012827};
276 Float_t dAir = 1.20479E-3;
278 AliMixture(99, "Air$", aAir, zAir, dAir, 4, wAir) ;
280 // DEFINITION OF THE TRACKING MEDIA
282 // for PHOS: idtmed[699->798] equivalent to fIdtmed[0->100]
283 Int_t * idtmed = fIdtmed->GetArray() - 699 ;
284 Int_t isxfld = gAlice->Field()->Integ() ;
285 Float_t sxmgmx = gAlice->Field()->Max() ;
287 // The scintillator of the calorimeter made of PBW04 -> idtmed[699]
288 AliMedium(0, "PHOS Xtal $", 0, 1,
289 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
291 // The scintillator of the CPV made of Polystyrene scintillator -> idtmed[700]
292 AliMedium(1, "CPV scint. $", 1, 1,
293 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
295 // Various Aluminium parts made of Al -> idtmed[701]
296 AliMedium(2, "Al parts $", 2, 0,
297 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
299 // The Tywek which wraps the calorimeter crystals -> idtmed[702]
300 AliMedium(3, "Tyvek wrapper$", 3, 0,
301 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.001, 0.001, 0, 0) ;
303 // The Polystyrene foam around the calorimeter module -> idtmed[703]
304 AliMedium(4, "Polyst. foam $", 4, 0,
305 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
307 // The Titanium around the calorimeter crystal -> idtmed[704]
308 AliMedium(5, "Titan. cover $", 5, 0,
309 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.0001, 0.0001, 0, 0) ;
311 // The Silicon of the pin diode to read out the calorimeter crystal -> idtmed[705]
312 AliMedium(6, "Si PIN $", 6, 0,
313 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.01, 0.01, 0, 0) ;
315 // The thermo insulating material of the box which contains the calorimeter module -> idtmed[706]
316 AliMedium(7, "Thermo Insul.$", 7, 0,
317 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
319 // The Textolit which makes up the box which contains the calorimeter module -> idtmed[707]
320 AliMedium(8, "Textolit $", 8, 0,
321 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
323 // FR4: The Plastic which makes up the frame of micromegas -> idtmed[708]
324 AliMedium(9, "FR4 $", 9, 0,
325 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
328 // The Composite Material for micromegas -> idtmed[709]
329 AliMedium(10, "CompoMat $", 10, 0,
330 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
332 // Copper -> idtmed[710]
333 AliMedium(11, "Copper $", 11, 0,
334 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
336 // G10: Printed Circuit material -> idtmed[711]
338 AliMedium(12, "G10 $", 12, 0,
339 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
341 // The Lead -> idtmed[712]
343 AliMedium(13, "Lead $", 13, 0,
344 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
346 // The gas mixture: ArCo2 -> idtmed[715]
348 AliMedium(16, "ArCo2 $", 16, 1,
349 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.01, 0, 0) ;
351 // Stainless steel -> idtmed[716]
352 AliMedium(17, "Steel $", 17, 0,
353 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.0001, 0, 0) ;
355 // Fibergalss -> idtmed[717]
356 AliMedium(18, "Fiberglass$", 18, 0,
357 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
359 // Cables in air -> idtmed[718]
360 AliMedium(19, "Cables $", 19, 0,
361 isxfld, sxmgmx, 10.0, 0.1, 0.1, 0.1, 0.1, 0, 0) ;
363 // Air -> idtmed[798]
364 AliMedium(99, "Air $", 99, 0,
365 isxfld, sxmgmx, 10.0, 1.0, 0.1, 0.1, 10.0, 0, 0) ;
367 // --- Set decent energy thresholds for gamma and electron tracking
369 // Tracking threshold for photons and electrons in the scintillator crystal
370 gMC->Gstpar(idtmed[699], "CUTGAM",0.5E-4) ;
371 gMC->Gstpar(idtmed[699], "CUTELE",1.0E-4) ;
373 // --- Generate explicitly delta rays in the titan cover ---
374 gMC->Gstpar(idtmed[704], "LOSS",3.) ;
375 gMC->Gstpar(idtmed[704], "DRAY",1.) ;
376 // --- and in aluminium parts ---
377 gMC->Gstpar(idtmed[701], "LOSS",3.) ;
378 gMC->Gstpar(idtmed[701], "DRAY",1.) ;
379 // --- and in PIN diode
380 gMC->Gstpar(idtmed[705], "LOSS",3) ;
381 gMC->Gstpar(idtmed[705], "DRAY",1) ;
382 // --- and in the passive convertor
383 gMC->Gstpar(idtmed[712], "LOSS",3) ;
384 gMC->Gstpar(idtmed[712], "DRAY",1) ;
385 // Tracking threshold for photons and electrons in the gas ArC02
386 gMC->Gstpar(idtmed[715], "CUTGAM",1.E-5) ;
387 gMC->Gstpar(idtmed[715], "CUTELE",1.E-5) ;
388 gMC->Gstpar(idtmed[715], "CUTNEU",1.E-5) ;
389 gMC->Gstpar(idtmed[715], "CUTHAD",1.E-5) ;
390 gMC->Gstpar(idtmed[715], "CUTMUO",1.E-5) ;
391 gMC->Gstpar(idtmed[715], "BCUTE",1.E-5) ;
392 gMC->Gstpar(idtmed[715], "BCUTM",1.E-5) ;
393 gMC->Gstpar(idtmed[715], "DCUTE",1.E-5) ;
394 gMC->Gstpar(idtmed[715], "DCUTM",1.E-5) ;
395 gMC->Gstpar(idtmed[715], "PPCUTM",1.E-5) ;
396 gMC->Gstpar(idtmed[715], "LOSS",2.) ;
397 gMC->Gstpar(idtmed[715], "DRAY",0.) ;
398 gMC->Gstpar(idtmed[715], "STRA",2.) ;
402 //____________________________________________________________________________
403 void AliPHOS::Digits2Raw()
405 // convert digits of the current event to raw data
407 AliPHOSLoader * loader = dynamic_cast<AliPHOSLoader*>(fLoader) ;
410 loader->LoadDigits();
411 TClonesArray* digits = loader->Digits() ;
414 AliError(Form("No digits found !"));
419 loader->LoadDigitizer();
420 AliPHOSDigitizer * digitizer = dynamic_cast<AliPHOSDigitizer *>(loader->Digitizer()) ;
423 AliPHOSGeometry* geom = GetGeometry();
425 AliError(Form("No geometry found !"));
429 // some digitization constants
430 const Int_t kDDLOffset = 0x600; // assigned to PHOS
431 const Int_t kThreshold = 1; // skip digits below this threshold
433 AliAltroBuffer* buffer = NULL;
435 Int_t adcValuesLow[fkTimeBins];
436 Int_t adcValuesHigh[fkTimeBins];
438 // loop over digits (assume ordered digits)
439 for (Int_t iDigit = 0; iDigit < digits->GetEntries(); iDigit++) {
440 AliPHOSDigit* digit = dynamic_cast<AliPHOSDigit *>(digits->At(iDigit)) ;
441 if (digit->GetAmp() < kThreshold)
444 geom->AbsToRelNumbering(digit->GetId(), relId);
445 Int_t module = relId[0];
449 continue; // ignore digits from CPV
452 // PHOS EMCA has 4 DDL per module. Splitting is done based on the row number
453 Int_t iDDL = 4 * (module - 1) + (4 * (relId[2] - 1)) / geom->GetNPhi();
456 if (iDDL != prevDDL) {
457 // write real header and close previous file
460 buffer->WriteDataHeader(kFALSE, kFALSE);
464 // open new file and write dummy header
465 TString fileName("PHOS_") ;
466 fileName += (iDDL + kDDLOffset) ;
468 buffer = new AliAltroBuffer(fileName.Data(), 1);
469 buffer->WriteDataHeader(kTRUE, kFALSE); //Dummy;
474 // out of time range signal (?)
475 if (digit->GetTimeR() > GetRawFormatTimeMax() ) {
476 buffer->FillBuffer(digit->GetAmp());
477 buffer->FillBuffer(GetRawFormatTimeBins() ); // time bin
478 buffer->FillBuffer(3); // bunch length
479 buffer->WriteTrailer(3, relId[3], relId[2], module); // trailer
481 // calculate the time response function
483 Double_t energy = 0 ;
484 if ( digit->GetId() <= geom->GetNModules() * geom->GetNCristalsInModule())
485 energy = digit->GetAmp() * digitizer->GetEMCchannel() + digitizer->GetEMCpedestal() ;
487 energy = digit->GetAmp() * digitizer->GetCPVchannel() + digitizer->GetCPVpedestal() ;
489 Bool_t lowgain = RawSampledResponse(digit->GetTimeR(), energy, adcValuesHigh, adcValuesLow) ;
492 buffer->WriteChannel(relId[3], relId[2], module + fLowGainOffset,
493 GetRawFormatTimeBins(), adcValuesLow, kThreshold);
495 buffer->WriteChannel(relId[3], relId[2], module,
496 GetRawFormatTimeBins(), adcValuesHigh, kThreshold);
501 // write real header and close last file
504 buffer->WriteDataHeader(kFALSE, kFALSE);
508 loader->UnloadDigits();
511 //____________________________________________________________________________
512 void AliPHOS::Hits2SDigits()
514 // create summable digits
516 AliPHOSSDigitizer* phosDigitizer =
517 new AliPHOSSDigitizer(fLoader->GetRunLoader()->GetFileName().Data()) ;
518 phosDigitizer->SetEventRange(0, -1) ; // do all the events
519 phosDigitizer->ExecuteTask("all") ;
522 //____________________________________________________________________________
523 AliLoader* AliPHOS::MakeLoader(const char* topfoldername)
525 //different behaviour than standard (singleton getter)
526 // --> to be discussed and made eventually coherent
527 fLoader = new AliPHOSLoader(GetName(),topfoldername);
531 //__________________________________________________________________
532 Double_t AliPHOS::RawResponseFunction(Double_t *x, Double_t *par)
534 // Shape of the electronics raw reponse:
535 // It is a semi-gaussian, 2nd order Gamma function of the general form
536 // v(t) = n**n * Q * A**n / C *(t/tp)**n * exp(-n * t/tp) with
537 // tp : peaking time par[0]
538 // n : order of the function
539 // C : integrating capacitor in the preamplifier
540 // A : open loop gain of the preamplifier
541 // Q : the total APD charge to be measured Q = C * energy
544 Double_t xx = x[0] - ( fgTimeTrigger + par[3] ) ;
546 if (xx < 0 || xx > fgTimeMax)
549 Double_t fac = par[0] * TMath::Power(fgOrder, fgOrder) * TMath::Power(par[1], fgOrder) / fgCapa ;
550 signal = fac * par[2] * TMath::Power(xx / fgTimePeak, fgOrder) * TMath::Exp(-fgOrder * (xx / fgTimePeak)) ;
555 //__________________________________________________________________
556 Double_t AliPHOS::RawResponseFunctionMax(Double_t charge, Double_t gain)
558 return ( charge * TMath::Power(fgOrder, fgOrder) * TMath::Power(gain, fgOrder)
559 / ( fgCapa * TMath::Exp(fgOrder) ) );
563 //__________________________________________________________________
564 Bool_t AliPHOS::RawSampledResponse(const Double_t dtime, const Double_t damp, Int_t * adcH, Int_t * adcL) const
566 // for a start time dtime and an amplitude damp given by digit,
567 // calculates the raw sampled response AliPHOS::RawResponseFunction
569 const Int_t kRawSignalOverflow = 0x3FF ;
570 Bool_t lowGain = kFALSE ;
572 TF1 signalF("signal", RawResponseFunction, 0, GetRawFormatTimeMax(), 4);
574 for (Int_t iTime = 0; iTime < GetRawFormatTimeBins(); iTime++) {
575 signalF.SetParameter(0, GetRawFormatHighCharge() ) ;
576 signalF.SetParameter(1, GetRawFormatHighGain() ) ;
577 signalF.SetParameter(2, damp) ;
578 signalF.SetParameter(3, dtime) ;
579 Double_t time = iTime * GetRawFormatTimeMax() / GetRawFormatTimeBins() ;
580 Double_t signal = signalF.Eval(time) ;
581 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow ){ // larger than 10 bits
582 signal = kRawSignalOverflow ;
585 adcH[iTime] = static_cast<Int_t>(signal + 0.5) ;
587 signalF.SetParameter(0, GetRawFormatLowCharge() ) ;
588 signalF.SetParameter(1, GetRawFormatLowGain() ) ;
589 signal = signalF.Eval(time) ;
590 if ( static_cast<Int_t>(signal+0.5) > kRawSignalOverflow) // larger than 10 bits
591 signal = kRawSignalOverflow ;
592 adcL[iTime] = static_cast<Int_t>(0.5 + signal ) ;
598 //____________________________________________________________________________
599 void AliPHOS::SetTreeAddress()
601 // Links Hits in the Tree to Hits array
604 sprintf(branchname,"%s",GetName());
605 // Branch address for hit tree
606 TTree *treeH = TreeH();
608 branch = treeH->GetBranch(branchname);
611 if (fHits == 0x0) fHits= new TClonesArray("AliPHOSHit",1000);
612 //AliInfo(Form("<%s> Setting Hits Address",GetName()));
613 branch->SetAddress(&fHits);
618 //____________________________________________________________________________
619 void AliPHOS::WriteQA()
622 // Make TreeQA in the output file.
625 fTreeQA = new TTree("TreeQA", "QA Alarms") ;
626 // Create Alarms branches
627 Int_t bufferSize = 32000 ;
628 Int_t splitlevel = 0 ;
630 TFolder* topfold = GetLoader()->GetTopFolder(); //get top aliroot folder; skowron
631 TString phosqafn(AliConfig::Instance()->GetQAFolderName()+"/"); //get name of QAaut folder relative to top event; skowron
632 phosqafn+=GetName(); //hard wired string!!! add the detector name to the pathname; skowron
633 TFolder * alarmsF = (TFolder*)topfold->FindObjectAny(phosqafn); //get the folder
637 AliError(Form("Can not find folder with qa alarms"));
640 TString branchName(alarmsF->GetName());
641 TBranch * alarmsBranch = fTreeQA->Branch(branchName,"TFolder", &alarmsF, bufferSize, splitlevel);
642 TString branchTitle = branchName + " QA alarms" ;
643 alarmsBranch->SetTitle(branchTitle);
644 alarmsBranch->Fill() ;