AuroraMaster

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= Introduction =
 
  
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The AuroraMaster package contains python classes providing high level interfaces to the Aurora algorithms and tools. The following tools are implemented in AuroraMaster at the moment:
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The AuroraMaster analysis configuration system used in Aurora version 2.x has been removed in the development version (branch [https://git.inp.nsk.su/sctau/aurora/-/tree/dev-gcf1?ref_type=heads dev-gcf1]).
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The analysis is now configured by creation of various analysis tools using usual Python functions and joining them into analysis-tool chain of AnalysisAlgorithm.
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* Read/write SCT EDM data
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Please see the page [[Use_Analysis_package]] for details.
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* Primary event generators
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** Particle gun
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** [https://evtgen.hepforge.org/ EvtGen]
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* Parametric simulation
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** Main SCT parametric simulation
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** [[Simple_SCT_parametric_simulation|Simple parametric simulation]]
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* Full simulation with DD4Hep and Geant4
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* [[Use_Analysis_package|Event analysis and selection with the Analysis package]]
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** Access to reconstructed final-state-particles
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** Reconstruction of particle decay trees
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** Saving flat n-tuples for further physics analysis
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= The AuroraMaster class =
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Each job option employing AuroraMaster must contain one instance of the AuroraMaster class:
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from AuroraMaster.auroramaster import AuroraMaster
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am = AuroraMaster(olvl='info')
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The <code>olvl</code> argument specifies the default output level: 'debug' or 'info', where the latter is used as the default.
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The job option logic is formed by invoking methods of the AuroraMaster instance. Each method has the 'cfg' parameter that takes an AuroraConfig object.
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The following example shows a ready-to-use job option for event generation with [https://evtgen.hepforge.org/ EvtGen] and saving them to file in SCT EDM format:
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from AuroraMaster.auroramaster import AuroraMaster, AuroraConfig
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# Instantiate AuroraMaster
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am = AuroraMaster('evtgen', 'info')
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# Plug in component for EvtGen
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evtgenCfg = AuroraConfig({
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    'root' : 'psi(3770)',
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    'dec': './dkpi.dec'
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})
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am.add_signal_provider('evtgen', evtgenCfg)
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# Plug in component for SCT EDM output
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edmoutputCfg = AuroraConfig{
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    'filename': 'parsim.root',
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    'commands': ['keep *'],
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})
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am.add_edmo(cfg=edmoutputCfg)
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am.run(evtmax=10**4)
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The <code>run</code> method must be invoked at the end.
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= AuroraConfig =
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The AuroraConfig is a data structure very similar to python dict. It can contain nested lists, dicts and other AuroraConfig objects. An example below shows configuration of simple parametric simulation:
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parsimCfg = AuroraConfig({
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    'Tracker' : {
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        'deteff': 0.99,
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        'ptcut': 50e-3,
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        'bfield': 1.5,
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        'maxCosth': np.cos(10./180. * np.pi),
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        'momentumSampler' : {
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            'mean' : np.zeros(3),
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            'covar': np.diag(np.ones(3)) * 1.e-3**2
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        },
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        'vertexSampler' : {
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            'mean' : np.zeros(3),
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            'covar': np.diag(np.ones(3)) * 1.e-3**2
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        }
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    },
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    'PID' : {
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        'eff' : 0.95,
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        'sigmaKpi' : 6.,
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        'sigmaMupi' : 4.,
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        'sigmaKp' : 3.,
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        'sigmaE' : 3.,
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    },
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    'Calorimeter' : {
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        'deteff': 1.0,
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        'energyThreshold' : 15e-3,
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        'maxCosth' : np.cos(10./180. * np.pi),
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        'sampler' : {
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            'mean' : np.zeros(3),
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            'covar': (np.diag(np.ones(3)) * 1.e-2**2).ravel()
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        }
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    }
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})
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An AuroraConfig object can be serialized to and serialized from json with methods <code>to_json</code> and <code>from_json</code>. It is recommended to create json files with configuration using this interface, and not create json manualy.
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= AuroraMaster components =
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All AuroraMaster class methods of the <code>add_{component}</code> format has two parameters:
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* <code>cfg</code> - an object of the <code>AuroraConfig</code> class. Default value it None
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* <code>json</code> - string path to a json file with configuration. Default value it None
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A component set up is dome with three steps:
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# Default configuration
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# Configuration with passed json file. It overwrites any subset of default parameters. Parameters not specified in json keep the default values
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# Configuration with <code>AuroraConfig</code> object. It overrides values of the specified parameters leaving other parameters unchanged
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If some parameter is specified in both json file and <code>AuroraConfig</code> object, the final value is taken from the <code>AuroraConfig</code> object.
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== add_edmi() ==
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The AuroraMaster.add_edmi() method initialized ScTauDataSvc, instantiates a PodioInput class and has the following default configuration:
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edminputCfg = AuroraConfig({
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    'name' : 'EDMReader',
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    'olevel' : 'info',
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    'filename': 'input.root',
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    'collections': ['Particles'],
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})
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== add_edmo() ==
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The AuroraMaster.add_edmo() method initialized ScTauDataSvc, instantiates a PodioOutput class and has the following default configuration:
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edmoutputCfg = AuroraConfig({
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    'filename': 'output.root',
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    'commands': ['keep *'],
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    'olevel' : 'info',
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})
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== add_parsim() ==
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The AuroraMaster.add_parsim() method initializes tools for parametric simulation and instantiates the required algorithm. Selection of specific implementation of the parametric simulation is done by the parameter `which`. The code snipped below shows how to plug in simple parametric simulation:
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simplepartimCfg = AuroraConfig({
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    'olevel': 'info',
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    'Tracker' : {
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        'deteff': 0.99,
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        'ptcut': 50e-3,
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        'bfield': 1.5,
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        'maxCosth': np.cos(10./180. * np.pi),
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        'momentumSampler' : {
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            'mean' : np.zeros(3),
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            'covar': np.diag(np.ones(3)) * 1.e-3**2
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        },
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        'vertexSampler' : {
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            'mean' : np.zeros(3),
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            'covar': np.diag(np.ones(3)) * 1.e-3**2
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        }
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    },
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    'PID' : {
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        'eff' : 0.95,
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        'sigmaKpi' : 6.,
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        'sigmaMupi' : 4.,
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        'sigmaKp' : 3.,
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        'sigmaE' : 3.,
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    },
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    'Calorimeter' : {
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        'deteff': 1.0,
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        'energyThreshold' : 15e-3,
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        'maxCosth' : np.cos(10./180. * np.pi),
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        'sampler' : {
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            'mean' : np.zeros(3),
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            'covar': np.diag(np.ones(3)) * 1.e-2**2
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        }
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    }
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})
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am.add_parsim(which='simple', cfg=parsimCfg)
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See [[Simple SCT parametric simulation|the detailed description]] of the simple SCT parametric simulation.
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== add_fullsim() ==
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fullsimCfg = AuroraConfig({
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    'detector': 'SimG4DD4hepDetector',
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    'subsystems': ['ALL'],
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    'physicslist': 'SimG4FtfpBert',
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    'energyCut': 0.1 * units.GeV,
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    'field' : {
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        'Bz' : 1.0 * units.tesla,
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        'rmax' : 100.0 * units.m,
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        'zmax' : 100.0 * units.m
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    },
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    'olevel': 'info',
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})
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== add_signal_provider() ==
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eventgenCfg = AuroraConfig({
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    'root' : 'vpho',
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    'dec' : '',
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    'ecms' : 0.,
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    'olevel': 'info',
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})
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am.add_signal_provider('evtgen', evtgenCfg)
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or
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particlegunCfg = AuroraConfig({
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    'momentum' : np.array([0.1, 1.5]) * units.GeV,
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    'phi': [0., 2*np.pi],
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    'theta': np.array([10, 170]) * units.rad,
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    'particles': [11, 13, 211],
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    'olevel': 'info',
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})
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am.add_signal_provider('gun', gunCfg)
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[[Category:Not_public]]
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Latest revision as of 16:52, 30 May 2025

The AuroraMaster analysis configuration system used in Aurora version 2.x has been removed in the development version (branch dev-gcf1). The analysis is now configured by creation of various analysis tools using usual Python functions and joining them into analysis-tool chain of AnalysisAlgorithm. Please see the page Use_Analysis_package for details.

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