BDSIM
BDSIM is a Geant4 extension toolkit for simulation of particle transport in accelerator beamlines.
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BDSFieldMagUndulator.hh
1/*
2Beam Delivery Simulation (BDSIM) Copyright (C) BDSIM Collaboration, 2001 - 2026.
3
4This file is part of BDSIM.
5
6BDSIM is free software: you can redistribute it and/or modify
7it under the terms of the GNU General Public License as published
8by the Free Software Foundation version 3 of the License.
9
10BDSIM is distributed in the hope that it will be useful, but
11WITHOUT ANY WARRANTY; without even the implied warranty of
12MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13GNU General Public License for more details.
14
15You should have received a copy of the GNU General Public License
16along with BDSIM. If not, see <http://www.gnu.org/licenses/>.
17*/
18#ifndef BDSFIELDMAGUNDULATOR_H
19#define BDSFIELDMAGUNDULATOR_H
20
21#include "BDSFieldMag.hh"
22
23#include "globals.hh" // geant4 types / globals
24#include "G4ThreeVector.hh"
25
27
36{
37public:
39 G4double beamPipeRadiusIn);
40
41 virtual ~BDSFieldMagUndulator(){;}
42
44 virtual G4ThreeVector GetField(const G4ThreeVector &position,
45 const G4double t = 0) const;
46
47private:
50
52 G4double B;
53
55 G4double wavenumber;
56
59 G4double limit;
60
63};
64
65#endif
Class that provides the magnetic strength in a quadrupole.
G4double wavenumber
The undulator wavenumber.
BDSFieldMagUndulator()
Private default constructor to force use of supplied constructor.
G4double beamPipeRadius
Cache of beam pipe radius to know maximum valid extent of field.
virtual G4ThreeVector GetField(const G4ThreeVector &position, const G4double t=0) const
Access the field value.
G4double B
The peak field.
Interface for static magnetic fields that may or may not be local.
Efficient storage of magnet strengths.