Belle II Software  release-08-01-10
Static Public Member Functions | List of all members
VXDMomentumEnergyEstimator Class Reference

Static Public Member Functions

def do_for_each_hit_type (cluster, svd_function, pxd_function)
 
def calculate_charges_and_path_lengths_for_one_type (clusters, mc_particle)
 
def generate_truncated (charge_list)
 

Detailed Description

 The base class with all static methods to use.

Definition at line 18 of file harvester.py.

Member Function Documentation

◆ calculate_charges_and_path_lengths_for_one_type()

def calculate_charges_and_path_lengths_for_one_type (   clusters,
  mc_particle 
)
static 
Return lists of charges and path lengths for the clusters associated with an MCParticle

Definition at line 34 of file harvester.py.

34  def calculate_charges_and_path_lengths_for_one_type(clusters, mc_particle):
35  """Return lists of charges and path lengths for the clusters associated with an MCParticle"""
36  charge_list = []
37  path_length_list = []
38 
39  tools = Belle2.VXDMomentumEstimationTools(clusters[0].__class__.__name__).getInstance()
40 
41  momentum = mc_particle.getMomentum()
42  position = mc_particle.getProductionVertex()
43  charge = mc_particle.getCharge()
44  b_field = Belle2.BFieldManager.getField(position).Z() / Belle2.Unit.T
45  helix = Belle2.Helix(position, momentum, charge, b_field)
46 
47  for cluster in clusters:
48 
49  calibrated_charge = tools.getCalibratedCharge(cluster)
50  path_length = tools.getPathLength(cluster, helix)
51 
52  charge_list.append(calibrated_charge)
53  path_length_list.append(path_length)
54 
55  return charge_list, path_length_list, list(np.divide(charge_list, path_length_list))
56 
Belle2::CDC::Helix
Helix parameter class.
Definition: Helix.h:48
Belle2::VXDMomentumEstimationTools
Tools needed for the VXD momentum estimation to, e.g.
Definition: VXDMomentumEstimationTools.h:32
Belle2::BFieldManager::getField
static void getField(const double *pos, double *field)
return the magnetic field at a given position.
Definition: BFieldManager.h:91

◆ do_for_each_hit_type()

def do_for_each_hit_type (   cluster,
  svd_function,
  pxd_function 
)
static 
Apply a PXD selection to a PXDCluster or an SVD selection to an SVDCluster

Definition at line 23 of file harvester.py.

◆ generate_truncated()

def generate_truncated (   charge_list)
static 
Sort then truncate a list to all but the last 2 entries or the first 4 entries or the first 6 entries

Definition at line 58 of file harvester.py.

The documentation for this class was generated from the following file: