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 **************************************************************************/
18 ///////////////////////////////////////////////////////////////////////////////
20 // Class providing the calibration parameters by accessing the CDB //
22 // Request an instance with AliTRDcalibDB::Instance() //
23 // If a new event is processed set the event number with SetRun //
24 // Then request the calibration data //
27 // Jan Fiete Grosse-Oetringhaus (Jan.Fiete.Grosse-Oetringhaus@cern.ch) //
29 ///////////////////////////////////////////////////////////////////////////////
34 #include "AliCDBManager.h"
35 #include "AliCDBStorage.h"
36 #include "AliCDBEntry.h"
39 #include "AliTRDcalibDB.h"
40 #include "AliTRDgeometry.h"
41 #include "AliTRDpadPlane.h"
42 #include "AliTRDCommonParam.h"
44 #include "Cal/AliTRDCalROC.h"
45 #include "Cal/AliTRDCalPad.h"
46 #include "Cal/AliTRDCalDet.h"
47 #include "Cal/AliTRDCalGlobals.h"
48 #include "Cal/AliTRDCalPIDLQ.h"
49 #include "Cal/AliTRDCalMonitoring.h"
50 #include "Cal/AliTRDCalChamberStatus.h"
51 #include "Cal/AliTRDCalPadStatus.h"
52 #include "Cal/AliTRDCalSingleChamberStatus.h"
54 ClassImp(AliTRDcalibDB)
56 AliTRDcalibDB *AliTRDcalibDB::fgInstance = 0;
57 Bool_t AliTRDcalibDB::fgTerminated = kFALSE;
59 //_ singleton implementation __________________________________________________
60 AliTRDcalibDB* AliTRDcalibDB::Instance()
63 // Singleton implementation
64 // Returns an instance of this class, it is created if neccessary
67 if (fgTerminated != kFALSE) {
71 if (fgInstance == 0) {
72 fgInstance = new AliTRDcalibDB();
79 //_____________________________________________________________________________
80 void AliTRDcalibDB::Terminate()
83 // Singleton implementation
84 // Deletes the instance of this class and sets the terminated flag,
85 // instances cannot be requested anymore
86 // This function can be called several times.
91 if (fgInstance != 0) {
98 //_____________________________________________________________________________
99 AliTRDcalibDB::AliTRDcalibDB()
110 // Default constructor
112 // TODO Default runnumber is set to 0, this should be changed later
113 // to an invalid value (e.g. -1) to prevent
114 // TODO invalid calibration data to be used.
117 for (Int_t i = 0; i < kCDBCacheSize; ++i) {
122 // Create the sampled PRF
127 //_____________________________________________________________________________
128 AliTRDcalibDB::AliTRDcalibDB(const AliTRDcalibDB &c)
139 // Copy constructor (not that it make any sense for a singleton...)
142 for (Int_t i = 0; i < kCDBCacheSize; ++i) {
147 // Create the sampled PRF
152 //_____________________________________________________________________________
153 AliTRDcalibDB &AliTRDcalibDB::operator=(const AliTRDcalibDB &c)
156 // Assignment operator (same as above ...)
160 AliFatal("No assignment operator defined");
167 //_____________________________________________________________________________
168 AliTRDcalibDB::~AliTRDcalibDB()
183 //_caching functions____________________________________________________________
184 const TObject *AliTRDcalibDB::GetCachedCDBObject(Int_t id)
187 // Retrieves a cdb object with the given id. The objects are cached as
188 // long as the run number is not changed.
190 // Put together the available objects here by using the lines
191 // a) For usual calibration objects:
193 // return CacheCDBEntry(kID<Name>,"TRD/Calib/<Path>");
195 // See function CacheCDBEntry for details.
197 // b) For calibration data which depends on two objects: One containing
198 // a value per detector and one the local fluctuations per pad:
200 // return CacheMergeCDBEntry(kID<Name>,"TRD/Calib/<padPath>","TRD/Calib/<chamberPath>");
202 // See function CacheMergeCDBEntry for details.
207 // Parameters defined per pad and chamber
209 return CacheCDBEntry(kIDVdriftPad ,"TRD/Calib/LocalVdrift");
211 case kIDVdriftChamber :
212 return CacheCDBEntry(kIDVdriftChamber ,"TRD/Calib/ChamberVdrift");
215 return CacheCDBEntry(kIDT0Pad ,"TRD/Calib/LocalT0");
218 return CacheCDBEntry(kIDT0Chamber ,"TRD/Calib/ChamberT0");
220 case kIDGainFactorPad :
221 return CacheCDBEntry(kIDGainFactorPad ,"TRD/Calib/LocalGainFactor");
223 case kIDGainFactorChamber :
224 return CacheCDBEntry(kIDGainFactorChamber ,"TRD/Calib/ChamberGainFactor");
227 // Parameters defined per pad
229 return CacheCDBEntry(kIDPRFWidth ,"TRD/Calib/PRFWidth");
233 case kIDChamberStatus :
234 return CacheCDBEntry(kIDChamberStatus ,"TRD/Calib/ChamberStatus");
237 return CacheCDBEntry(kIDPadStatus ,"TRD/Calib/PadStatus");
241 case kIDMonitoringData :
242 return CacheCDBEntry(kIDMonitoringData ,"TRD/Calib/MonitoringData");
245 return CacheCDBEntry(kIDGlobals ,"TRD/Calib/Globals");
248 return CacheCDBEntry(kIDPIDLQ ,"TRD/Calib/PIDLQ");
257 //_____________________________________________________________________________
258 AliCDBEntry *AliTRDcalibDB::GetCDBEntry(const char *cdbPath)
261 // Retrieves an entry with path <cdbPath> from the CDB.
264 AliCDBEntry *entry = AliCDBManager::Instance()->Get(cdbPath,fRun);
266 AliError(Form("Failed to get entry: %s",cdbPath));
274 //_____________________________________________________________________________
275 const TObject *AliTRDcalibDB::CacheCDBEntry(Int_t id, const char *cdbPath)
278 // Caches the entry <id> with cdb path <cdbPath>
281 if (!fCDBCache[id]) {
282 fCDBEntries[id] = GetCDBEntry(cdbPath);
283 if (fCDBEntries[id]) {
284 fCDBCache[id] = fCDBEntries[id]->GetObject();
288 return fCDBCache[id];
292 //_____________________________________________________________________________
293 void AliTRDcalibDB::SetRun(Long64_t run)
296 // Sets current run number. Calibration data is read from the corresponding file.
297 // When the run number changes the caching is invalidated.
310 //_____________________________________________________________________________
311 void AliTRDcalibDB::Invalidate()
314 // Invalidates cache (when run number is changed).
317 for (Int_t i = 0; i < kCDBCacheSize; ++i) {
318 if (fCDBEntries[i]) {
319 if (AliCDBManager::Instance()->GetCacheFlag() == kFALSE) {
320 if ((fCDBEntries[i]->IsOwner() == kFALSE) &&
324 delete fCDBEntries[i];
333 //_____________________________________________________________________________
334 Float_t AliTRDcalibDB::GetVdrift(Int_t det, Int_t col, Int_t row)
337 // Returns the drift velocity for the given pad.
340 const AliTRDCalPad *calPad = dynamic_cast<const AliTRDCalPad *>
341 (GetCachedCDBObject(kIDVdriftPad));
346 AliTRDCalROC *roc = calPad->GetCalROC(det);
351 const AliTRDCalDet *calChamber = dynamic_cast<const AliTRDCalDet *>
352 (GetCachedCDBObject(kIDVdriftChamber));
357 return calChamber->GetValue(det) * roc->GetValue(col,row);
361 //_____________________________________________________________________________
362 Float_t AliTRDcalibDB::GetVdriftAverage(Int_t det)
365 // Returns the average drift velocity for the given detector
368 const AliTRDCalDet *calDet = dynamic_cast<const AliTRDCalDet *>
369 (GetCachedCDBObject(kIDVdriftChamber));
374 return calDet->GetValue(det);
378 //_____________________________________________________________________________
379 Float_t AliTRDcalibDB::GetT0(Int_t det, Int_t col, Int_t row)
382 // Returns t0 for the given pad.
385 const AliTRDCalGlobals *calGlobal = dynamic_cast<const AliTRDCalGlobals *>
386 (GetCachedCDBObject(kIDGlobals));
391 const AliTRDCalPad *calPad = dynamic_cast<const AliTRDCalPad *>
392 (GetCachedCDBObject(kIDT0Pad));
397 AliTRDCalROC *roc = calPad->GetCalROC(det);
402 const AliTRDCalDet *calChamber = dynamic_cast<const AliTRDCalDet *>
403 (GetCachedCDBObject(kIDT0Chamber));
408 return calGlobal->GetT0Offset()
409 + calChamber->GetValue(det)
410 + roc->GetValue(col,row);
414 //_____________________________________________________________________________
415 Float_t AliTRDcalibDB::GetT0Average(Int_t det)
418 // Returns the average t0 for the given detector
421 const AliTRDCalDet *calDet = dynamic_cast<const AliTRDCalDet *>
422 (GetCachedCDBObject(kIDT0Chamber));
427 return calDet->GetValue(det);
431 //_____________________________________________________________________________
432 Float_t AliTRDcalibDB::GetGainFactor(Int_t det, Int_t col, Int_t row)
435 // Returns the gain factor for the given pad.
438 const AliTRDCalPad *calPad = dynamic_cast<const AliTRDCalPad *>
439 (GetCachedCDBObject(kIDGainFactorPad));
444 AliTRDCalROC *roc = calPad->GetCalROC(det);
448 const AliTRDCalDet *calChamber = dynamic_cast<const AliTRDCalDet *>
449 (GetCachedCDBObject(kIDGainFactorChamber));
454 return calChamber->GetValue(det) * roc->GetValue(col,row);
458 //_____________________________________________________________________________
459 Float_t AliTRDcalibDB::GetGainFactorAverage(Int_t det)
462 // Returns the average gain factor for the given detector
465 const AliTRDCalDet *calDet = dynamic_cast<const AliTRDCalDet *>
466 (GetCachedCDBObject(kIDGainFactorChamber));
471 return calDet->GetValue(det);
475 //_____________________________________________________________________________
476 Float_t AliTRDcalibDB::GetPRFWidth(Int_t det, Int_t col, Int_t row)
479 // Returns the PRF width for the given pad.
482 const AliTRDCalPad *calPad = dynamic_cast<const AliTRDCalPad *>
483 (GetCachedCDBObject(kIDPRFWidth));
488 AliTRDCalROC *roc = calPad->GetCalROC(det);
493 return roc->GetValue(col,row);
497 //_____________________________________________________________________________
498 Int_t AliTRDcalibDB::GetNumberOfTimeBins()
501 // Returns the number of time bins which are read-out.
504 const AliTRDCalGlobals *calGlobal = dynamic_cast<const AliTRDCalGlobals *>
505 (GetCachedCDBObject(kIDGlobals));
510 return calGlobal->GetNumberOfTimeBins();
514 //_____________________________________________________________________________
515 Char_t AliTRDcalibDB::GetPadStatus(Int_t det, Int_t col, Int_t row)
518 // Returns the status of the given pad
521 const AliTRDCalPadStatus *cal = dynamic_cast<const AliTRDCalPadStatus *>
522 (GetCachedCDBObject(kIDPadStatus));
527 const AliTRDCalSingleChamberStatus *roc = cal->GetCalROC(det);
532 return roc->GetStatus(col,row);
536 //_____________________________________________________________________________
537 Char_t AliTRDcalibDB::GetChamberStatus(Int_t det)
540 // Returns the status of the given chamber
543 const AliTRDCalChamberStatus *cal = dynamic_cast<const AliTRDCalChamberStatus *>
544 (GetCachedCDBObject(kIDChamberStatus));
549 return cal->GetStatus(det);
553 //_____________________________________________________________________________
554 Bool_t AliTRDcalibDB::IsPadMasked(Int_t det, Int_t col, Int_t row)
557 // Returns status, see name of functions for details ;-)
560 const AliTRDCalPadStatus *cal = dynamic_cast<const AliTRDCalPadStatus *>
561 (GetCachedCDBObject(kIDPadStatus));
566 return cal->IsMasked(det,col,row);
570 //_____________________________________________________________________________
571 Bool_t AliTRDcalibDB::IsPadBridgedLeft(Int_t det, Int_t col, Int_t row)
574 // Returns status, see name of functions for details ;-)
577 const AliTRDCalPadStatus *cal = dynamic_cast<const AliTRDCalPadStatus *>
578 (GetCachedCDBObject(kIDPadStatus));
583 return cal->IsBridgedLeft(det,col,row);
587 //_____________________________________________________________________________
588 Bool_t AliTRDcalibDB::IsPadBridgedRight(Int_t det, Int_t col, Int_t row)
591 // Returns status, see name of functions for details ;-)
594 const AliTRDCalPadStatus * cal = dynamic_cast<const AliTRDCalPadStatus *>
595 (GetCachedCDBObject(kIDPadStatus));
600 return cal->IsBridgedRight(det,col,row);
604 //_____________________________________________________________________________
605 Bool_t AliTRDcalibDB::IsChamberInstalled(Int_t det)
608 // Returns status, see name of functions for details ;-)
611 const AliTRDCalChamberStatus * cal = dynamic_cast<const AliTRDCalChamberStatus *>
612 (GetCachedCDBObject(kIDChamberStatus));
617 return cal->IsInstalled(det);
621 //_____________________________________________________________________________
622 Bool_t AliTRDcalibDB::IsChamberMasked(Int_t det)
625 // Returns status, see name of functions for details ;-)
628 const AliTRDCalChamberStatus * cal = dynamic_cast<const AliTRDCalChamberStatus *>
629 (GetCachedCDBObject(kIDChamberStatus));
634 return cal->IsMasked(det);
638 //_____________________________________________________________________________
639 const AliTRDCalPIDLQ *AliTRDcalibDB::GetPIDLQObject()
642 // Returns the object storing the distributions for PID with likelihood
645 return dynamic_cast<const AliTRDCalPIDLQ *>
646 (GetCachedCDBObject(kIDPIDLQ));
650 //_____________________________________________________________________________
651 const AliTRDCalMonitoring *AliTRDcalibDB::GetMonitoringObject()
654 // Returns the object storing the monitoring data
657 return dynamic_cast<const AliTRDCalMonitoring *>
658 (GetCachedCDBObject(kIDMonitoringData));
662 //_____________________________________________________________________________
663 Float_t AliTRDcalibDB::GetOmegaTau(Float_t vdrift, Float_t bz)
666 // Returns omega*tau (tan(Lorentz-angle)) for a given drift velocity <vdrift>
667 // and a B-field <bz> for Xe/CO2 (15%).
668 // The values are according to a GARFIELD simulation.
670 // This function basically does not belong to the calibration class.
671 // It should be moved somewhere else.
672 // However, currently it is in use by simulation and reconstruction.
675 Float_t fieldAbs = TMath::Abs(bz);
676 Float_t fieldSgn = (bz > 0.0) ? 1.0 : -1.0;
679 Float_t p0[kNb] = { 0.004810, 0.007412, 0.010252, 0.013409, 0.016888 };
680 Float_t p1[kNb] = { 0.054875, 0.081534, 0.107333, 0.131983, 0.155455 };
681 Float_t p2[kNb] = { -0.008682, -0.012896, -0.016987, -0.020880, -0.024623 };
682 Float_t p3[kNb] = { 0.000155, 0.000238, 0.000330, 0.000428, 0.000541 };
684 // No ExB if field is too small (or zero)
685 if (fieldAbs < 0.01) {
690 // Calculate ExB from parametrization
693 Int_t ib = ((Int_t) (10 * (fieldAbs - 0.15)));
694 ib = TMath::Max( 0,ib);
695 ib = TMath::Min(kNb,ib);
697 Float_t alphaL = p0[ib]
699 + p2[ib] * vdrift*vdrift
700 + p3[ib] * vdrift*vdrift*vdrift;
702 return TMath::Tan(fieldSgn * alphaL);
708 //_____________________________________________________________________________
709 void AliTRDcalibDB::SamplePRF()
712 // Samples the pad response function (should maybe go somewhere else ...)
715 const Int_t kPRFbin = 61;
717 Float_t prf[kNplan][kPRFbin] = {
718 {2.9037e-02, 3.3608e-02, 3.9020e-02, 4.5292e-02,
719 5.2694e-02, 6.1362e-02, 7.1461e-02, 8.3362e-02,
720 9.7063e-02, 1.1307e-01, 1.3140e-01, 1.5235e-01,
721 1.7623e-01, 2.0290e-01, 2.3294e-01, 2.6586e-01,
722 3.0177e-01, 3.4028e-01, 3.8077e-01, 4.2267e-01,
723 4.6493e-01, 5.0657e-01, 5.4655e-01, 5.8397e-01,
724 6.1767e-01, 6.4744e-01, 6.7212e-01, 6.9188e-01,
725 7.0627e-01, 7.1499e-01, 7.1851e-01, 7.1499e-01,
726 7.0627e-01, 6.9188e-01, 6.7212e-01, 6.4744e-01,
727 6.1767e-01, 5.8397e-01, 5.4655e-01, 5.0657e-01,
728 4.6493e-01, 4.2267e-01, 3.8077e-01, 3.4028e-01,
729 3.0177e-01, 2.6586e-01, 2.3294e-01, 2.0290e-01,
730 1.7623e-01, 1.5235e-01, 1.3140e-01, 1.1307e-01,
731 9.7063e-02, 8.3362e-02, 7.1461e-02, 6.1362e-02,
732 5.2694e-02, 4.5292e-02, 3.9020e-02, 3.3608e-02,
734 {2.5478e-02, 2.9695e-02, 3.4655e-02, 4.0454e-02,
735 4.7342e-02, 5.5487e-02, 6.5038e-02, 7.6378e-02,
736 8.9696e-02, 1.0516e-01, 1.2327e-01, 1.4415e-01,
737 1.6794e-01, 1.9516e-01, 2.2573e-01, 2.5959e-01,
738 2.9694e-01, 3.3719e-01, 3.7978e-01, 4.2407e-01,
739 4.6889e-01, 5.1322e-01, 5.5569e-01, 5.9535e-01,
740 6.3141e-01, 6.6259e-01, 6.8882e-01, 7.0983e-01,
741 7.2471e-01, 7.3398e-01, 7.3761e-01, 7.3398e-01,
742 7.2471e-01, 7.0983e-01, 6.8882e-01, 6.6259e-01,
743 6.3141e-01, 5.9535e-01, 5.5569e-01, 5.1322e-01,
744 4.6889e-01, 4.2407e-01, 3.7978e-01, 3.3719e-01,
745 2.9694e-01, 2.5959e-01, 2.2573e-01, 1.9516e-01,
746 1.6794e-01, 1.4415e-01, 1.2327e-01, 1.0516e-01,
747 8.9696e-02, 7.6378e-02, 6.5038e-02, 5.5487e-02,
748 4.7342e-02, 4.0454e-02, 3.4655e-02, 2.9695e-02,
750 {2.2363e-02, 2.6233e-02, 3.0782e-02, 3.6140e-02,
751 4.2535e-02, 5.0157e-02, 5.9197e-02, 6.9900e-02,
752 8.2707e-02, 9.7811e-02, 1.1548e-01, 1.3601e-01,
753 1.5998e-01, 1.8739e-01, 2.1840e-01, 2.5318e-01,
754 2.9182e-01, 3.3373e-01, 3.7837e-01, 4.2498e-01,
755 4.7235e-01, 5.1918e-01, 5.6426e-01, 6.0621e-01,
756 6.4399e-01, 6.7700e-01, 7.0472e-01, 7.2637e-01,
757 7.4206e-01, 7.5179e-01, 7.5551e-01, 7.5179e-01,
758 7.4206e-01, 7.2637e-01, 7.0472e-01, 6.7700e-01,
759 6.4399e-01, 6.0621e-01, 5.6426e-01, 5.1918e-01,
760 4.7235e-01, 4.2498e-01, 3.7837e-01, 3.3373e-01,
761 2.9182e-01, 2.5318e-01, 2.1840e-01, 1.8739e-01,
762 1.5998e-01, 1.3601e-01, 1.1548e-01, 9.7811e-02,
763 8.2707e-02, 6.9900e-02, 5.9197e-02, 5.0157e-02,
764 4.2535e-02, 3.6140e-02, 3.0782e-02, 2.6233e-02,
766 {1.9635e-02, 2.3167e-02, 2.7343e-02, 3.2293e-02,
767 3.8224e-02, 4.5335e-02, 5.3849e-02, 6.4039e-02,
768 7.6210e-02, 9.0739e-02, 1.0805e-01, 1.2841e-01,
769 1.5216e-01, 1.7960e-01, 2.1099e-01, 2.4671e-01,
770 2.8647e-01, 3.2996e-01, 3.7660e-01, 4.2547e-01,
771 4.7536e-01, 5.2473e-01, 5.7215e-01, 6.1632e-01,
772 6.5616e-01, 6.9075e-01, 7.1939e-01, 7.4199e-01,
773 7.5838e-01, 7.6848e-01, 7.7227e-01, 7.6848e-01,
774 7.5838e-01, 7.4199e-01, 7.1939e-01, 6.9075e-01,
775 6.5616e-01, 6.1632e-01, 5.7215e-01, 5.2473e-01,
776 4.7536e-01, 4.2547e-01, 3.7660e-01, 3.2996e-01,
777 2.8647e-01, 2.4671e-01, 2.1099e-01, 1.7960e-01,
778 1.5216e-01, 1.2841e-01, 1.0805e-01, 9.0739e-02,
779 7.6210e-02, 6.4039e-02, 5.3849e-02, 4.5335e-02,
780 3.8224e-02, 3.2293e-02, 2.7343e-02, 2.3167e-02,
782 {1.7224e-02, 2.0450e-02, 2.4286e-02, 2.8860e-02,
783 3.4357e-02, 4.0979e-02, 4.8966e-02, 5.8612e-02,
784 7.0253e-02, 8.4257e-02, 1.0102e-01, 1.2094e-01,
785 1.4442e-01, 1.7196e-01, 2.0381e-01, 2.4013e-01,
786 2.8093e-01, 3.2594e-01, 3.7450e-01, 4.2563e-01,
787 4.7796e-01, 5.2991e-01, 5.7974e-01, 6.2599e-01,
788 6.6750e-01, 7.0344e-01, 7.3329e-01, 7.5676e-01,
789 7.7371e-01, 7.8410e-01, 7.8793e-01, 7.8410e-01,
790 7.7371e-01, 7.5676e-01, 7.3329e-01, 7.0344e-01,
791 6.6750e-01, 6.2599e-01, 5.7974e-01, 5.2991e-01,
792 4.7796e-01, 4.2563e-01, 3.7450e-01, 3.2594e-01,
793 2.8093e-01, 2.4013e-01, 2.0381e-01, 1.7196e-01,
794 1.4442e-01, 1.2094e-01, 1.0102e-01, 8.4257e-02,
795 7.0253e-02, 5.8612e-02, 4.8966e-02, 4.0979e-02,
796 3.4357e-02, 2.8860e-02, 2.4286e-02, 2.0450e-02,
798 {1.5096e-02, 1.8041e-02, 2.1566e-02, 2.5793e-02,
799 3.0886e-02, 3.7044e-02, 4.4515e-02, 5.3604e-02,
800 6.4668e-02, 7.8109e-02, 9.4364e-02, 1.1389e-01,
801 1.3716e-01, 1.6461e-01, 1.9663e-01, 2.3350e-01,
802 2.7527e-01, 3.2170e-01, 3.7214e-01, 4.2549e-01,
803 4.8024e-01, 5.3460e-01, 5.8677e-01, 6.3512e-01,
804 6.7838e-01, 7.1569e-01, 7.4655e-01, 7.7071e-01,
805 7.8810e-01, 7.9871e-01, 8.0255e-01, 7.9871e-01,
806 7.8810e-01, 7.7071e-01, 7.4655e-01, 7.1569e-01,
807 6.7838e-01, 6.3512e-01, 5.8677e-01, 5.3460e-01,
808 4.8024e-01, 4.2549e-01, 3.7214e-01, 3.2170e-01,
809 2.7527e-01, 2.3350e-01, 1.9663e-01, 1.6461e-01,
810 1.3716e-01, 1.1389e-01, 9.4364e-02, 7.8109e-02,
811 6.4668e-02, 5.3604e-02, 4.4515e-02, 3.7044e-02,
812 3.0886e-02, 2.5793e-02, 2.1566e-02, 1.8041e-02,
815 // More sampling precision with linear interpolation
818 Float_t pad[kPRFbin];
819 Int_t sPRFbin = kPRFbin;
820 Float_t sPRFwid = (fPRFhi - fPRFlo) / ((Float_t) sPRFbin);
821 for (Int_t iPad = 0; iPad < sPRFbin; iPad++) {
822 pad[iPad] = ((Float_t) iPad + 0.5) * sPRFwid + fPRFlo;
825 fPRFwid = (fPRFhi - fPRFlo) / ((Float_t) fPRFbin);
826 fPRFpad = ((Int_t) (1.0 / fPRFwid));
828 if (fPRFsmp) delete [] fPRFsmp;
829 fPRFsmp = new Float_t[kNplan*fPRFbin];
835 for (Int_t iPla = 0; iPla < kNplan; iPla++) {
837 for (Int_t iBin = 0; iBin < fPRFbin; iBin++) {
839 Float_t bin = (((Float_t) iBin) + 0.5) * fPRFwid + fPRFlo;
843 diff = bin - pad[ipos2++];
844 } while ((diff > 0) && (ipos2 < kPRFbin));
845 if (ipos2 == kPRFbin) {
846 fPRFsmp[iPla*fPRFbin+iBin] = prf[iPla][ipos2-1];
848 else if (ipos2 == 1) {
849 fPRFsmp[iPla*fPRFbin+iBin] = prf[iPla][ipos2-1];
853 if (ipos2 >= kPRFbin) ipos2 = kPRFbin - 1;
855 fPRFsmp[iPla*fPRFbin+iBin] = prf[iPla][ipos2]
856 + diff * (prf[iPla][ipos2] - prf[iPla][ipos1])
865 //_____________________________________________________________________________
866 Int_t AliTRDcalibDB::PadResponse(Double_t signal, Double_t dist
867 , Int_t plane, Double_t *pad) const
870 // Applies the pad response
873 Int_t iBin = ((Int_t) (( - dist - fPRFlo) / fPRFwid));
874 Int_t iOff = plane * fPRFbin;
876 Int_t iBin0 = iBin - fPRFpad + iOff;
877 Int_t iBin1 = iBin + iOff;
878 Int_t iBin2 = iBin + fPRFpad + iOff;
883 if ((iBin1 >= 0) && (iBin1 < (fPRFbin*kNplan))) {
886 pad[0] = signal * fPRFsmp[iBin0];
888 pad[1] = signal * fPRFsmp[iBin1];
889 if (iBin2 < (fPRFbin*kNplan)) {
890 pad[2] = signal * fPRFsmp[iBin2];