• T.J. Roberts, K.B. Beard
  Muons, Inc, Batavia
• S. Ahmed, D. Huang, D.M. Kaplan, L.K. Spentzouris
  Illinois Institute of Technology, Chicago, Illinois

The G4beam­line pro­gram* is a use­ful and steadi­ly im­prov­ing tool to quick­ly and eas­i­ly model beam lines and ex­per­i­men­tal equip­ment with­out user pro­gram­ming. It has both graph­i­cal and com­mand-line user in­ter­faces. Un­like most ac­cel­er­a­tor physics codes, it eas­i­ly han­dles a wide range of ma­te­ri­als and fields, being par­tic­u­lar­ly well suit­ed for the study of muon and neu­tri­no fa­cil­i­ties. As it is based on the Gean­t4 toolk­it**, G4beam­line in­cludes most of what is known about the in­ter­ac­tions of par­ti­cles with mat­ter. We are con­tin­u­ing the de­vel­op­ment of G4beam­line to fa­cil­i­tate its use by a larg­er set of beam line and ac­cel­er­a­tor de­vel­op­ers. A major new fea­ture is the cal­cu­la­tion of space-charge ef­fects. G4beam­line is open source and freely avail­able at: http://​g4beamline.​muonsinc.​com

* http://g4beamline.muonsinc.com
** http://geant4.cern.ch