5 \page README_shuttle Shuttle
7 How to test the Shuttle preprocessor(s) for MUON.
9 We will get two "logical" MUON preprocessors : one for the tracker and one for the trigger.
10 Both will manage several subtasks (e.g. the tracker one will handle pedestals,
11 gains and deadchannels, while the trigger one will handle masks and trigger lut)
12 "Physically", only one class will manage both the tracker and the trigger : AliMUONPreprocessor.
13 Depending on the subsystem and on the task to be performed (based on the run type), this class
14 will instanciate the correct set of AliMUONVSubProcessor(s) which does the actual job.
15 Output of most processors will end up in OCDB (Offine Condition DataBase). A set of helper functions
16 to peek at this OCDB are gathered in AiMUONCDB class.
19 \section shuttle_s1 TestMUONPreprocessor.C
21 This is the master macro used to check the MUON part of the Shuttle.
22 Depending on what you want to test, you'll have to modify the input files
23 (using shuttle->AddInputFile) and/or the run type (using shuttle->AddInputRunParameter())
26 \section shuttle_s2 AliMUONPreprocessor(const TString& detName)
28 Depending on how this one is constructed, and depending on the runtype, it will
29 perform differents tasks. Note that for the moment the runtypes are "fake", i.e.
30 put by hand in the TestMUONPreprocessor.C macro, and might not correspond to
31 the final values to be used by the DAQ.
34 detName runType task to be done worker class (AliMUONVSubprocessor child)
35 --------------------------------------------------------------------------------------------------------
36 MCH PEDESTAL_RUN read ASCII ped files AliMUONPedestalSubprocessor
37 and put them into OCDB
39 MCH GMS read GMS alignment files AliMUONGMSSubprocessor
40 and put them into OCDB
42 MCH PHYSICS read DCS HV values and AliMUONHVSubprocessor
45 MCH ELECTRONICS_CALIBRATION_RUN read ASCII gain files prototype only = AliMUONGainSubprocessor
46 and put them into OCDB
48 MTR to be defined to be defined to be done
52 \section shuttle_s3 Pedestals
54 Two options here. You can either use a pre-done set of ASCII pedestals files (generated as
55 explained below for the 2nd option), located at /afs/cern.ch/user/l/laphecet/public/LDC*.ped,
58 We've written an AliMUONPedestalEventGenerator which creates fake pedestal events. The pedestal values
59 are taken from the Offline Condition DataBase (OCDB) (which is itself fakely filled
60 using the WritePedestals() method of AliMUONCDB class
62 So first generate a valid pedestal CDB entry by using the AliMUONCDB class. There's one
63 little trick : you should first point to the "default" OCDB (local://$ALICE_ROOT) in
64 order to get the mapping loaded. Then only you can play with another OCDB.
67 root[] AliCDBManager::Instance()->SetDefaultStorage("local://$ALICE_ROOT");
68 root[] AliCDBManager::Instance()->SetRun(0);
69 root[] AliMpCDB::LoadDDLStore();
70 root[] const char* cdbpath="local://$ALICE_ROOT/SHUTTLE/TestShuttle/TestCDB"; // where to put the CDB
71 root[] AliMUONCDB cdb(cdbpath)
72 root[] Bool_t defaultValues = kFALSE; // to generate random values instead of plain zeros...
73 root[] Int_t startRun = 80;
74 root[] Int_t endRun = 80;
75 root[] cdb.WritePedestals(defaultValues, startRun, endRun);
78 Expected output is (don't worry about the warnings, they are harmless) :
81 I-AliMUONCDB::ManuList: Generating ManuList...
82 I-AliMUONCDB::ManuList: Manu List generated.
83 I-AliMUONCDB::MakePedestalStore: 16828 Manus and 1064008 channels.
84 I-AliMUONCDB::WritePedestals: Ngenerated = 1064008
85 I-AliCDBManager::Init: AliEn classes enabled in Root. AliCDBGrid factory registered.
86 I-AliCDBManager::SetDefaultStorage: Setting Default storage to: local://$ALICE_ROOT/SHUTTLE/TestShuttle/TestCDB
87 I-AliCDBLocal::PutEntry: CDB object stored into file ($ALICE_ROOT)/SHUTTLE/TestShuttle/TestCDB/MUON/Calib/Pedestals/Run80_80_v0_s0.root
90 Then use the AliMUONPedestalEventGenerator to produce simulated pedestal events.
92 Usage (from the Root prompt) :
94 AliCDBManager::Instance()->SetDefaultStorage(cdbpath); // so you will read
95 // back pedestals values generated in the previous step
96 const char* dateFileName = "raw.date"; // base filename for the output
97 Int_t runNumber = 80; // run number used to fetch the pedestals from the OCDB
98 Int_t nevents = 100; // # of events to generate. 100 should be enough
99 gSystem->Load("libMUONshuttle"); // needed or not depending on whether it's already loaded or not
100 AliMUONPedestalEventGenerator ped(runNumber,nevents,dateFileName);
104 It *will* take a lot of time (mainly due to the fact that we're writing a
105 bunch of ASCII files = DDL files), so please be patient.
107 The output should be the normal simulated sequence of MUON.Hits.root, MUON.SDigits.root,
108 MUON.Digits.root, raw/*.ddl files and raw.date.LDCi where i=0-3 (i.e. one DATE file
109 per LDC, as will be used in real life), the latter ones being roughly 100 MB each.
111 // FIXME : instructions below should be replaced with usage of MUONTRKda
114 The raw.date.LDC* files are then processed using the makeped online program
115 (currently found, pending an agreement on where to put online programs under cvs,
116 under /afs/cern.ch/user/a/abaldiss/public/v16; Please contact Alberto to check
117 it's the latest version) which outputs manus-*.ped ASCII files (one per LDC) :
120 makeped -f raw.date.LCDi -a LDCi.ped (i=0,1,2,3)
122 (repeat for each LDC)
125 The LDCi.ped files are the input for the pedestal subprocessor,
126 which is tested using the TestMUONPreprocessor.C macro.
127 The output of the pedestal subprocessor (upon success only) is written into the OCDB.
128 Difference between the input and the output can be inferred using the diff() function
132 \section shuttle_s4 Gains
134 Like pedestals, you have two options here. You can either use a pre-done set of
135 ASCII gain files (generated as explained below for the 2nd option),
136 located at /afs/cern.ch/user/l/laphecet/public/LDC*.gains, or build you own set.
138 We've written an AliMUONGainEventGenerator which creates fake gain events.
139 The pedestal and gain values are taken from the Offline Condition DataBase (OCDB)
140 (which is itself fakely filled using the WritePedestals() and WriteGains()
141 methods of AliMUONCDB class).
143 So first you need to generate a valid pedestal CDB entry and a valid gain CDB
144 entry by using the AliMUONCDB class, from the Root prompt:
147 const char* cdbpath="local://$ALICE_ROOT/SHUTTLE/TestShuttle/TestCDB"; // where to put the CDB
148 AliMUONCDB cdb(cdbpath)
149 Bool_t defaultValues = kFALSE; // to generate random values instead of plain zeros...
152 cdb.WritePedestals(defaultValues, pedRun, pedRun);
153 cdb.WriteGains(defaultValues, gainRun, gainRun);
156 Expected output is (don't worry about the warnings, they are harmless) :
158 Then use the AliMUONGainEventGenerator to produce simulated gain events : the output
159 will be n x 4 date files (n is the number of fake injections, currently 9, and 4
160 is the number of LDCs)
162 Usage (again, from the Root prompt) :
165 const char* cdbpath="local://$ALICE_ROOT/SHUTTLE/TestShuttle/TestCDB"; // where to get the CDB
166 AliCDBManager::Instance()->SetDefaultStorage(cdbpath); // so you will read
167 // back pedestals and gain values generated in the previous step
168 const char* dateFileName = "raw.date"; // base filename for the output
169 Int_t gainRunNumber = 80; // run number used to fetch gains from OCDB
170 Int_t pedRunNumber = 81; // run number used to fetch the pedestals from the OCDB
171 // generated ped files will be for r = 81, 83, etc...
172 Int_t nevents = 100; // # of events to generate. 100 should be enough for testing, but 1000 would be better for prod
173 gSystem->Load("libMUONshuttle"); // needed or not depending on whether it's already loaded or not
174 AliMUONGainEventGenerator g(gainRunNumber,pedRunNumber,nevents,dateFileName);
178 It *will* take a lot of time (mainly due to the fact that we're writing a
179 bunch of ASCII files = DDL files), so please be patient.
181 The output should be a sequence of directories, RUN81, RUN82, etc..., each
182 containing the normal simulated sequence of MUON.Hits.root, MUON.SDigits.root,
183 MUON.Digits.root, raw/*.ddl files and raw.date.LDCi where i=0-3 (i.e. one DATE file
184 per LDC, as will be used in real life), the latter ones being roughly 100 MB each.
188 // Below should follow instructions on how to feed the MUONTRKda with the
193 \section shuttle_s5 HV
195 HV DCS values are created in CreateDCSAliasMap() of TestMUONPreprocessor.C
196 You might want to modify this function to create a given set of error conditions
197 in order to test whether the HVSubprocessor is reacting properly to those errors.
200 \section shuttle_s6 GMS
202 The GMS alignment data for testing can be generated with
203 the macro MUONGenerateTestGMS.C:
204 The matrices of TGeoHMatrix type, with TObject::fUniqueID equal to the geometry
205 module Id, are put in a TClonesArray and saved in the Root file with a
208 This chapter is defined in the READMEshuttle.txt file.