ILC beam parameters and beamstrahlung information

Last update: 13 October, 2009
ILC Beam parameters

■ SB2009 parameter(revised: 2009/10/13)

RDR ILC beam parameters

About CAIN

BSGEN information

■ How to use

Example to use BSGEN will be found in the example of JSF package, JSF/src/generators/bsgen. genbeam.C and genbeam2.C are examples used to generate spectrum for comparison of luminosity spectrum shown above.

For PythiaGenerator implemented in JSF, set following variables properly.

PythiaGenerator.BeamStrahlung: 1 
#  1 = to use BSGEN spectrum, 0 = not use

PythiaGenerator.BSParameter:  file_name
#   File name of BSDATA file.  For example, 500_nominal
#    in the case of nominal data at 500 GeV, 500_nominal.root
#   These files must be in the directory, $JSFROOT/data/bsdata 

PythiaGenerator.BSFileName:  500_nominal.root
#   File name of BSDATA file.  For example, 500_nominal
#    in the case of nominal data at 500 GeV, 500_nominal.root


JSFBeamGeneration.Width: 0.0005
#  A half width of initial beam energ spread.
#  As a default, energy spread is uniform
#  A value of 0.0005 corresponds to the energy spread of 
#  0.1% in full width
#

■ References to the method


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Contact: akiya.miyamoto at kek.jp