Module simpa.acc
Package simpa.acc.api.utils

Class GaussianBeamSampler

java.lang.Object
simpa.acc.api.utils.GaussianBeamSampler
All Implemented Interfaces:
BeamSampler
public class GaussianBeamSampler extends Object implements BeamSampler
This class can be used to generate the phase space coordinated for the particles in a beam with a Gaussian distribution.

  • Constructor Details

    • GaussianBeamSampler

      public GaussianBeamSampler(TwissParameters tp, org.apache.commons.math3.random.RandomGenerator randomGenerator)
      Constructs a 6D distribution corresponding to the given accelerator optical and beam parameters. This assumes that there is no coupling between the planes. All particles are generated at the same longitudinal position.
      Parameters:
      tp - Twiss parameters to be used to generate the bunch.
      randomGenerator - Random generator to be used to generate the random numbers.

    • GaussianBeamSampler

      public GaussianBeamSampler(TwissParameters tp)
      Constructs a 6D distribution corresponding to the given accelerator optical and beam parameters. This assumes that there is no coupling between the planes. All particles are generated at the same longitudinal position. For emmitance definition see: https://cas.web.cern.ch/sites/default/files/lectures/dourdan-2008/braun-emittance.pdf
      Parameters:
      tp - Twiss parameters to be used to generate the bunch.

    • GaussianBeamSampler

      public GaussianBeamSampler(TwissParameters tp, double dpOp)
      Constructs a 6D distribution corresponding to the given accelerator optical and beam parameters. This assumes that there is no coupling between the planes.
      Parameters:
      tp - 4D Twiss parameters to be used to generate the bunch. The H and V emittances are taken from the Twiss parameters
      dpOp - RMS momentum spread.

    • GaussianBeamSampler

      public GaussianBeamSampler(BeamMatrix bm)
      Based on the beam matrix it constructs a Gaussian beam sampler.
      Parameters:
      bm - - 6D Beam matrix

  • Method Details

    • sample

      public List<PhaseSpaceCoordinates> sample(int n)
      Specified by:
      sample in interface BeamSampler

    • getDistribution

      public org.apache.commons.math3.distribution.MultivariateNormalDistribution getDistribution()