BeamSpotCalibrationCAF.py

#!/usr/bin/env python3
 
 
 
 
 
import basf2
 
import os
import sys
import multiprocessing
 
from ROOT import Belle2
from ROOT.Belle2 import BeamSpotAlgorithm
 
from caf.framework import CAF, Calibration, CentralDatabase
from caf import backends
from caf import strategies
 
import modularAnalysis as ana
 
basf2.set_log_level(basf2.LogLevel.INFO)
 
 
def BeamSpotCalibration(files, tags):
    """
    Function to get the BeamSpot calibration object.
    Takes list of files and list of GTs as arguments.
    """
 
    path = basf2.create_path()
    path.add_module('Progress')
    path.add_module('RootInput')
 
    # Select mumu decays with enough hits
    muSelection = '[p>1.0]'
    muSelection += ' and abs(dz)<2.0 and abs(dr)<0.5'
    muSelection += ' and nPXDHits >=1 and nSVDHits >= 8 and nCDCHits >= 20'
    ana.fillParticleList('mu+:BS', muSelection, path=path)
    ana.reconstructDecay('Upsilon(4S):BS -> mu+:BS mu-:BS', '9.5<M<11.5', path=path)
 
    # Init the BeamSpot collector and algo
    collector = basf2.register_module('BeamSpotCollector', Y4SPListName='Upsilon(4S):BS')
    algorithm = BeamSpotAlgorithm()
 
    calibration = Calibration('BeamSpot',
                              collector=collector,
                              algorithms=algorithm,
                              input_files=files,
                              pre_collector_path=path,
                              database_chain=[CentralDatabase(tag) for tag in tags],
                              output_patterns=None,
                              max_files_per_collector_job=1,
                              backend_args=None
                              )
 
    # The segmentation is done in the algorithm
    calibration.strategies = strategies.SingleIOV
 
    return calibration
 
 
if __name__ == "__main__":
    input_files = [os.path.abspath(file) for file in Belle2.Environment.Instance().getInputFilesOverride()]
 
    if not len(input_files):
        print("You have to specify some input file(s) (raw data or di - muon skim with raw objects)\n"
              "using the standard basf2 command line option - i")
        print("See: basf2 -h")
        sys.exit(1)
 
    beamspot = BeamSpotCalibration(input_files, ['data_reprocessing_prompt', 'online_bucket9'])
 
    cal_fw = CAF()
    cal_fw.add_calibration(beamspot)
    cal_fw.backend = backends.LSF()
 
    # Try to guess if we are at KEKCC and change the backend to Local if not
    if multiprocessing.cpu_count() < 10:
        cal_fw.backend = backends.Local(8)
 
    cal_fw.run()