[807] | 1 | // |
---|
| 2 | // ******************************************************************** |
---|
| 3 | // * License and Disclaimer * |
---|
| 4 | // * * |
---|
| 5 | // * The Geant4 software is copyright of the Copyright Holders of * |
---|
| 6 | // * the Geant4 Collaboration. It is provided under the terms and * |
---|
| 7 | // * conditions of the Geant4 Software License, included in the file * |
---|
| 8 | // * LICENSE and available at http://cern.ch/geant4/license . These * |
---|
| 9 | // * include a list of copyright holders. * |
---|
| 10 | // * * |
---|
| 11 | // * Neither the authors of this software system, nor their employing * |
---|
| 12 | // * institutes,nor the agencies providing financial support for this * |
---|
| 13 | // * work make any representation or warranty, express or implied, * |
---|
| 14 | // * regarding this software system or assume any liability for its * |
---|
| 15 | // * use. Please see the license in the file LICENSE and URL above * |
---|
| 16 | // * for the full disclaimer and the limitation of liability. * |
---|
| 17 | // * * |
---|
| 18 | // * This code implementation is the result of the scientific and * |
---|
| 19 | // * technical work of the GEANT4 collaboration. * |
---|
| 20 | // * By using, copying, modifying or distributing the software (or * |
---|
| 21 | // * any work based on the software) you agree to acknowledge its * |
---|
| 22 | // * use in resulting scientific publications, and indicate your * |
---|
| 23 | // * acceptance of all terms of the Geant4 Software license. * |
---|
| 24 | // ******************************************************************** |
---|
| 25 | // |
---|
| 26 | // |
---|
| 27 | // |
---|
| 28 | |
---|
| 29 | #include "globals.hh" |
---|
| 30 | |
---|
| 31 | #include "G4GeometryManager.hh" |
---|
| 32 | |
---|
| 33 | #include "F04GlobalField.hh" |
---|
| 34 | |
---|
| 35 | #include "F04FocusSolenoid.hh" |
---|
| 36 | #include "F04SimpleSolenoid.hh" |
---|
| 37 | |
---|
| 38 | F04FocusSolenoid::F04FocusSolenoid(G4double Ba, G4double Bb, G4double fz, |
---|
| 39 | G4LogicalVolume* lv, |
---|
| 40 | G4ThreeVector c) : F04SimpleSolenoid(B1, fz, lv, c) |
---|
| 41 | |
---|
| 42 | { |
---|
| 43 | B1 = Ba; |
---|
| 44 | B2 = Bb; |
---|
| 45 | Half = false; |
---|
| 46 | } |
---|
| 47 | |
---|
| 48 | void F04FocusSolenoid::addFieldValue(const G4double point[4], |
---|
| 49 | G4double field[6]) const |
---|
| 50 | { |
---|
| 51 | G4ThreeVector global(point[0],point[1],point[2]); |
---|
| 52 | |
---|
| 53 | G4ThreeVector local = global2local.TransformPoint(global); |
---|
| 54 | |
---|
| 55 | if (isOutside(local)) return; |
---|
| 56 | |
---|
| 57 | G4double length = ((F04SimpleSolenoid*)this)->getLength(); |
---|
| 58 | |
---|
| 59 | G4double Bz = (B2-B1) * std::abs(local.z())/(length/2.) + B1; |
---|
| 60 | |
---|
| 61 | if (Half) { if (local.z() >= 0.) Bz = B1; } |
---|
| 62 | |
---|
| 63 | G4ThreeVector B(0.0,0.0,Bz); |
---|
| 64 | |
---|
| 65 | B = global2local.Inverse().TransformAxis(B); |
---|
| 66 | |
---|
| 67 | field[0] += B[0]; |
---|
| 68 | field[1] += B[1]; |
---|
| 69 | field[2] += B[2]; |
---|
| 70 | } |
---|