]>
Commit | Line | Data |
---|---|---|
d99769c3 | 1 | /************************************************************************** |
2 | * Copyright(c) 1998-1999, ALICE Experiment at CERN, All rights reserved. * | |
3 | * * | |
4 | * Author: The ALICE Off-line Project. * | |
5 | * Contributors are mentioned in the code where appropriate. * | |
6 | * * | |
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 | **************************************************************************/ | |
15 | ||
16 | // $Id$ | |
17 | ||
18 | #include "AliMUONDigitCalibrator.h" | |
19 | ||
d99769c3 | 20 | #include "AliLog.h" |
21 | #include "AliMUONCalibrationData.h" | |
22 | #include "AliMUONConstants.h" | |
23 | #include "AliMUONData.h" | |
24 | #include "AliMUONDigit.h" | |
c795d086 | 25 | #include "AliMUONVCalibParam.h" |
d99769c3 | 26 | #include "TClonesArray.h" |
27 | ||
7945aae7 | 28 | /// \class AliMUONDigitCalibrator |
1171bb0a | 29 | /// Class used to calibrate digits (either real or simulated ones). |
30 | /// | |
31 | /// The calibration consists of subtracting the pedestal | |
32 | /// and multiplying by a gain, so that | |
33 | /// Signal = (ADC-pedestal)*gain | |
34 | /// | |
35 | /// Please note also that for the moment, if a digit lies on a dead channel | |
36 | /// we remove this digit from the list of digits. | |
37 | /// FIXME: this has to be revisited. By using the AliMUONDigit::fFlags we | |
38 | /// should in principle flag a digit as bad w/o removing it, but this | |
39 | /// then requires some changes in the cluster finder to deal with this extra | |
40 | /// information correctly (e.g. to set a quality for the cluster if it contains | |
41 | /// bad digits). | |
42 | /// | |
7945aae7 | 43 | /// \author Laurent Aphecetche |
44 | ||
1171bb0a | 45 | |
7945aae7 | 46 | /// \cond CLASSIMP |
d99769c3 | 47 | ClassImp(AliMUONDigitCalibrator) |
7945aae7 | 48 | /// \endcond |
d99769c3 | 49 | |
50 | //_____________________________________________________________________________ | |
51 | AliMUONDigitCalibrator::AliMUONDigitCalibrator(AliMUONData* muonData, | |
c795d086 | 52 | AliMUONCalibrationData* calib) |
d99769c3 | 53 | : TTask("AliMUONDigitCalibrator","Subtract pedestal from digit charge"), |
54 | fData(muonData), | |
55 | fCalibrationData(calib) | |
56 | { | |
7945aae7 | 57 | /// ctor. This class need the muonData to get access to the digit, |
58 | /// and the calibrationData to get access to calibration parameters. | |
d99769c3 | 59 | } |
60 | ||
61 | //_____________________________________________________________________________ | |
62 | AliMUONDigitCalibrator::~AliMUONDigitCalibrator() | |
63 | { | |
7945aae7 | 64 | /// empty dtor. |
d99769c3 | 65 | } |
66 | ||
67 | //_____________________________________________________________________________ | |
68 | void | |
69 | AliMUONDigitCalibrator::Exec(Option_t*) | |
70 | { | |
7945aae7 | 71 | /// Main method. |
72 | /// We loop on tracking chambers (i.e. we do nothing for trigger) | |
73 | /// and for each digit in that chamber, we calibrate it : | |
74 | /// a) if the corresponding channel is known to be bad, we set the signal to 0 | |
75 | /// (so that digit can be suppressed later on) | |
76 | /// b) we then apply pedestal and gain corrections. | |
c795d086 | 77 | |
d99769c3 | 78 | for ( Int_t ch = 0; ch < AliMUONConstants::NTrackingCh(); ++ch ) |
79 | { | |
80 | TClonesArray* digitArray = fData->Digits(ch); | |
81 | Int_t nDigits = digitArray->GetEntriesFast(); | |
82 | for ( Int_t d = 0; d < nDigits; ++d ) | |
83 | { | |
84 | AliMUONDigit* digit = | |
85 | static_cast<AliMUONDigit*>(digitArray->UncheckedAt(d)); | |
86 | ||
c795d086 | 87 | // Very first check is whether this channel is known to be bad, |
88 | // in which case we set the signal to zero. | |
89 | AliMUONVCalibParam* dead = static_cast<AliMUONVCalibParam*> | |
1171bb0a | 90 | (fCalibrationData->DeadChannels(digit->DetElemId(),digit->ManuId())); |
c795d086 | 91 | if ( dead && dead->ValueAsInt(digit->ManuChannel()) ) |
92 | { | |
1171bb0a | 93 | AliWarning(Form("Removing dead channel detElemId %d manuId %d " |
c795d086 | 94 | "manuChannel %d",digit->DetElemId(),digit->ManuId(), |
95 | digit->ManuChannel())); | |
96 | digit->SetSignal(0); | |
97 | continue; | |
98 | } | |
99 | ||
100 | // If the channel is good, go on with the calibration itself. | |
101 | ||
102 | AliMUONVCalibParam* pedestal = static_cast<AliMUONVCalibParam*> | |
1171bb0a | 103 | (fCalibrationData->Pedestals(digit->DetElemId(),digit->ManuId())); |
c795d086 | 104 | |
105 | AliMUONVCalibParam* gain = static_cast<AliMUONVCalibParam*> | |
1171bb0a | 106 | (fCalibrationData->Gains(digit->DetElemId(),digit->ManuId())); |
d99769c3 | 107 | |
d99769c3 | 108 | if (!pedestal) |
109 | { | |
c795d086 | 110 | AliFatal(Form("Got a null ped object for DE,manu=%d,%d", |
111 | digit->DetElemId(),digit->ManuId())); | |
d99769c3 | 112 | |
113 | } | |
114 | if (!gain) | |
115 | { | |
c795d086 | 116 | AliFatal(Form("Got a null gain object for DE,manu=%d,%d", |
117 | digit->DetElemId(),digit->ManuId())); | |
d99769c3 | 118 | } |
119 | ||
c795d086 | 120 | Int_t manuChannel = digit->ManuChannel(); |
45dd3605 | 121 | Float_t adc = digit->Signal(); |
c795d086 | 122 | Float_t padc = adc-pedestal->ValueAsFloat(manuChannel,0); |
123 | if ( padc < 3.0*pedestal->ValueAsFloat(manuChannel,1) ) | |
d99769c3 | 124 | { |
125 | padc = 0.0; | |
126 | } | |
c795d086 | 127 | Float_t charge = padc*gain->ValueAsFloat(manuChannel,0); |
45dd3605 | 128 | digit->SetSignal(charge); |
c795d086 | 129 | Int_t saturation = gain->ValueAsInt(manuChannel,1); |
45dd3605 | 130 | if ( charge >= saturation ) |
c795d086 | 131 | { |
132 | digit->Saturated(kTRUE); | |
133 | } | |
d99769c3 | 134 | } |
135 | } | |
136 | } |