| 1 | // |
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| 2 | // ******************************************************************** |
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| 3 | // * License and Disclaimer * |
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| 4 | // * * |
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| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
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| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
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| 7 | // * conditions of the Geant4 Software License, included in the file * |
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| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
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| 9 | // * include a list of copyright holders. * |
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| 10 | // * * |
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| 11 | // * Neither the authors of this software system, nor their employing * |
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| 12 | // * institutes,nor the agencies providing financial support for this * |
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| 13 | // * work make any representation or warranty, express or implied, * |
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| 14 | // * regarding this software system or assume any liability for its * |
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| 15 | // * use. Please see the license in the file LICENSE and URL above * |
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| 16 | // * for the full disclaimer and the limitation of liability. * |
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| 17 | // * * |
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| 18 | // * This code implementation is the result of the scientific and * |
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| 19 | // * technical work of the GEANT4 collaboration. * |
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| 20 | // * By using, copying, modifying or distributing the software (or * |
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| 21 | // * any work based on the software) you agree to acknowledge its * |
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| 22 | // * use in resulting scientific publications, and indicate your * |
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| 23 | // * acceptance of all terms of the Geant4 Software license. * |
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| 24 | // ******************************************************************** |
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| 25 | // |
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| 26 | // |
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| 27 | // $Id: G4QuadrupoleMagField.cc,v 1.4 2006/06/29 18:24:46 gunter Exp $ |
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| 28 | // GEANT4 tag $Name: geant4-09-04-beta-01 $ |
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| 29 | // |
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| 30 | // ------------------------------------------------------------------- |
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| 31 | |
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| 32 | #include "G4QuadrupoleMagField.hh" |
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| 33 | |
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| 34 | G4QuadrupoleMagField::G4QuadrupoleMagField(G4double pGradient) |
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| 35 | { |
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| 36 | fGradient = pGradient ; |
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| 37 | } |
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| 38 | |
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| 39 | ///////////////////////////////////////////////////////////////////////// |
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| 40 | |
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| 41 | G4QuadrupoleMagField::~G4QuadrupoleMagField() |
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| 42 | { |
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| 43 | } |
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| 44 | |
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| 45 | //////////////////////////////////////////////////////////////////////// |
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| 46 | |
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| 47 | void G4QuadrupoleMagField::GetFieldValue( const G4double y[7], |
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| 48 | G4double B[3] ) const |
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| 49 | { |
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| 50 | // G4double fGradient = 0.001 ; // Tesla/mm |
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| 51 | B[0] = fGradient*y[1] ; |
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| 52 | B[1] = fGradient*y[0] ; |
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| 53 | B[2] = 0 ; |
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| 54 | } |
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