GSI Forum - RDF feed
type: channel
description: GSI Helmholtzzentrum für Schwerionenforschung
items: tof barrel + TPC
items: Re: tof barrel + TPC
items: TPC dat file
items: Re: TPC dat file

tof barrel + TPC
type: item
description: Dear all, I have already implemented a TOF barrel counter by following the TPR description. The time will be determined by smearing the time information( space point in detector) with a time resolution of 100 ps. The problem is I have problems to commit it to the general pandaroot framework. Anyway i have a question. I want to use the TPC in order to reconstruct the momemtum and the trayectory. Is the TPC code so far developped to be used? Can one of the experts tell me which are the steps to be followed if i want to use the tpc macro? thanks a lot Alicia S.
creator: asanchez
date: 2007-07-17T08:18:49-00:00

Re: tof barrel + TPC
type: item
description: Hi Alicia! We are still working on the TPC reconstruction. One main limitation at the moment is, that we can only reconstruct paarticles which go under an angle of lets say not more than 70deg from the beam axis. This is due to the track parameterization we use. With GEANE this should be solved before september. Furthermore the track finder at the moment only works for tracks coming from the IP. I am working on secondaries today. Anyway you are invited to run the tpc reconstruction. Have a look at macro/tpc/runReco.C and try to understand it before you run it. Feel free to aks any question! Reconstruction at the moment is NOT an out-of-the-box tool. So expect to write your own scripts to utilize what you need. And before you can run the reco do not forget to run the digitization! Cheers! Sebastian.
creator: Sebastian Neubert
date: 2007-07-17T08:27:42-00:00

Re: tof barrel + TPC
type: item
description: Hi by using the tpc and tof together i got the following error by running the digi macro for tpc. It seems to be related to a missing file for tpcGas, Is there the possibility to commit this missing file, or is it possible to generate it by using the tpc code? thanks a lot Alicia. PSaid instance created... access via gSaid->f() - RTDB container factory CbmBaseContFact - RTDB container factory CbmFieldContFact - RTDB container factory CbmPassiveContFact - RTDB container factory TpcContFact -I- CbmRunAna: Opening Input file: test_tofMC.root Warning in <TStreamerInfo::BuildCheck>: The StreamerInfo of class CbmModule read from file demoparams.root has the same version (=1) as the active class but a different checksum. You should update the version to ClassDef(CbmModule,2). Do not try to write objects with the current class definition, the files will not be readable. Warning in <TStreamerInfo::BuildCheck>: The StreamerInfo of class CbmDetector read from file demoparams.root has the same version (=1) as the active class but a different checksum. You should update the version to ClassDef(CbmDetector,2). Do not try to write objects with the current class definition, the files will not be readable. Warning in <TClass::TClass>: no dictionary for class CbmEmc is available Warning in <TClass::TClass>: no dictionary for class CbmGeoEmcPar is available Warning in <TClass::TClass>: no dictionary for class CbmDrc is available Warning in <TClass::TClass>: no dictionary for class CbmGeoDrcPar is available Fatal in <TpcGas::TpcGas>: Input File is not found aborting Using host libthread_db library "/lib/libthread_db.so.1". Attaching to program: /proc/1685/exe, process 1685 `system-supplied DSO at 0xffffe000' has disappeared; keeping its symbols. done. done. [Thread debugging using libthread_db enabled] [New Thread 16384 (LWP 1685)] done. done. done. done. done. done. done. done. done. 0x419cb788 in waitpid () from /lib/libc.so.6 #1 0x41a538c0 in __DTOR_END__ () from /lib/libc.so.6 #2 0…
creator: asanchez
date: 2007-07-19T13:54:26-00:00

Re: tof barrel + TPC
type: item
description: The file is in the pandaroot/tpc directory. If I remember well, you have only to copy the files in the directory where you launch your digitization macro.
creator: StefanoSpataro
date: 2007-07-19T13:59:51-00:00

Re: tof barrel + TPC
type: item
description: Ok and now where is the so called DevMap_29-06-07_E_and_B_new_fieldclass.dat it is not includede in the /tpc directory. cheers Alicia
creator: asanchez
date: 2007-07-19T14:14:56-00:00

TPC dat file
type: item
description: Dear Sebastian, I have tried to run the digi macro but the file DevMap_29-06-07_E_and_B_new_fieldclass.dat is not includded in the new revision. there is any way to produce it, or has it to be committed by you? thanks a lot Alicia S.
creator: asanchez
date: 2007-07-24T07:41:04-00:00

Re: TPC dat file
type: item
description: Hi Alicia! This file is only needed for special Simulations, where the space charge distortions are taken into account in the TPC. When this option is switched off in the drifterTask the digitization is supposed to run without this file. However I do not know if Felix has programmed it that way. Felix, can you have a look at this, please!? Alicia you can try to switch off the Distort option of the DrifterTask and see if it does work. Cheers! Sebastian.
creator: Sebastian Neubert
date: 2007-07-24T11:27:51-00:00

Re: TPC dat file
type: item
description: Hi Sebastian, thanks a lot and gute Besserung. Best regards Alicia.
creator: asanchez
date: 2007-07-24T12:11:30-00:00

Re: TPC dat file
type: item
description: Daer all, could somebody from the TPC group tell me which momentum resolution are you expecting from the tracking? I mean for the reconstructed momentum. thanks a lot alicia S.
creator: asanchez
date: 2007-07-31T09:17:19-00:00

TPC dat file
type: item
description: Hi Sebastian, after having switch off the TpcDrifterTask i get this error is there any way to run the reco macro and obtain information about momentum reconstruction? cheers Alicia. Error in <CbmRuntimeDb::initContainers()>: Error occured during initialization CbmFieldCreator::createCbmField() -E- CbmRootManager Branch: TpcDriftedElectron not found in Tree Error in <TpcGemTask::TpcGemTask::Init>: DriftedElectron-array not found! -E- CbmRootManager Branch: TpcAvalanche not found in Tree Error in <TpcPadResponseTask::TpcPadResponseTask::Init>: Avalanche-array not found! -E- CbmRootManager Branch: TpcSignal not found in Tree Error in <TpcElectronicsTask::TpcElectronicsTask::Init>: Signal-array not found! TpcClusterizer:: 10827 clusters created Error: Can't call TpcGemTask::WriteHistograms() in current scope testdigi.C:121: Possible candidates are... (in TpcGemTask) (in CbmTask) *** Interpreter error recovered ***
creator: asanchez
date: 2007-07-31T12:12:39-00:00