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This is a discussion of uniform and non-uniform fields, magnetic, electric and otherwise, in which particles are propagated, and their relation to particle steppers.

The email gateway for this forum is: emfields-g4hn@slac.stanford.edu

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162 Question: How turn on the magnetic field   (Paul - Nov 20, 06:18) newer
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161 None: =?UTF-8?B?QnVnPz8=?= A question of G4EqEMFieldWithSpin.cc   (Hiromi Iinuma - Nov 04, 23:32)
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160 Sad: the proper time goes back   (Olivier Dadoun - Sep 10, 07:04)
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159 Question: A problem on the creation of electric field   (lesward - 23 May, 2009)
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158 Question: Problems with Radial Electric Field   (Clarisse - 27 Apr, 2009)
157 Question: The Strangest Problem I've ever met   (Zukai Wang - 19 Feb, 2009)
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156 Question: Spin tracking of muons at rest   (Kevin Lynch - 18 Feb, 2009)
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155 Question: Spin tracking of moving muons   (Kevin Lynch - 12 Feb, 2009)
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154 Question: recommendation for atmosphere mag field setup   (Scott Nutter - 01 Feb, 2009)
153 Sad: electron stuck on volume boundary with (local) uniform magnetic field   (Brian Fisher - 21 Jul, 2008)
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152 Question: non-uniform electric field in chamber   (janitor0405@126.com - 28 Jun, 2008)
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150 None: Gradient in G4QuadrupoleMagField   (Mariusz - 27 Feb, 2008)
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148 Question: Local Electric Field: GetFieldValue() problem   (Mario - 15 Feb, 2008)
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146 None: Problem with magnetic field from a table   (Mariusz - 25 Jan, 2008)
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144 Question: non-uniform magnetic field   (adammachona@yahoo.co.uk - 15 Nov, 2007)
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142 None: non-uniform electric field   (janitor0405@126.com - 12 Nov, 2007)
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140 None: Electric potential / non-uniform electric field   (Hannele - 17 Sep, 2007)
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138 None: Overlapping Fields   (Maurizio - 31 Jul, 2007)
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136 None: Questions about SetLargestAcceptableStep()   (throwpen@163.com - 21 Jul, 2007)
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130 Question: simultaneous B and E fields   (Abigail Bickley - 16 Jul, 2007)
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128 Question: Magnetic Field from field01 Example   (Matthew Middione - 13 Jul, 2007)
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126 None: Placing a magnetic field inside of a volume   (Matthew Middione - 11 Jul, 2007)
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124 None: Help setting up an Electric Field   (Adam - 10 Jul, 2007)
... 7 Message(s)
122 Question: Magnetic Field doesn't work when point source positioined at origin   (Matthew Middione - 02 Jul, 2007)
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120 Warning: endless loop in magnetic field   (Anton - 16 Jun, 2007)
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118 None: Problem with local magnetic field   (alex - 11 Mar, 2007)
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116 Question: multiple field maps   (Kazutaka Nakahara - 27 Feb, 2007)
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114 Question: insert Electric fileld to logical volume   (Lee, Hyun-Seung - 20 Feb, 2007)
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108 None: how to add non-uniform M-field and rf EM field   (long - 08 Jan, 2007)
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106 None: How to view helical trajectories in a solenoid   (Ken Teh - 05 Dec, 2006)
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104 None: Rotating a field & obtaining the EM field in a certain point   (Giovanni Marchiori - 26 Sep, 2006)
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100 Question: Electrons tracking in high magnetic fields with LowEn. el/m physics   (Ilya - 16 May, 2006)
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98 Question: Problems with Tracking in Vacuum   (Jens Hasper - 27 Mar, 2006)
... 5 Message(s)
96 Question: Electrons bouncing on the volume boundary in pure magnetic field   (Ilya - 20 Feb, 2006)
... 1 Message(s)
94 Question: Problem with tracking low energy ions in magnetic field in GEANT 4.7.0.p.1   (Ilya - 20 Jan, 2006)
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92 Question: Local Electric Field Segmentation Fault   (mcgeac00@uvic.ca - 12 Jan, 2006)
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90 None: Crazy Point in G4Field::GetFieldValue()   (Tom Roberts - 17 Dec, 2005)
... 9 Message(s)
88 Question: cold neutron spin tracking   (Emil Frlez - 22 Nov, 2005)
... 3 Message(s)
86 Question: Problem with Quadrupole Magnetic Field!!   (S.Fonseca UERJ/Brazil - 24 Oct, 2005)
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84 Warning: Trajectory in dipole field independent of energy !   (Tim Chambers - 13 Jul, 2005)
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82 None: program hang on in magnetic field   (Zhongdong Zhang - 11 Jul, 2005)
... 1 Message(s)
80 None: Large system, very slow field tracking... how to improve?   (Tim Chambers - 27 Jun, 2005)
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78 None: G4MagIntegratorDriver::OneGoodStep error   (John - 13 Jun, 2005)
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76 Question: magnetic field in a vacuum box   (maryam@jlab.org - 08 Jun, 2005)
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74 Question: Simultaneous E and B Fields???   (Danie McDevitt - 07 Jun, 2005)
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72 None: How to make custom magnetic field class?   (Tim Chambers - 25 May, 2005)
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70 None: Different radii for the 'same' electron in B-field   (Valentin - 10 May, 2005)
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68 Question: I am working on multiwired proportional counter, how can i impliment electric field.   (M.V.Amaresh Kumar - 30 Apr, 2005)
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65 Question: I am working on multiwired proportional counter, how can i impliment electric field.   (M.V.Amaresh Kumar - 30 Apr, 2005)
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63 Question: Problems with a local magnetic field   (Lewis Dartnell - 22 Apr, 2005)
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61 None: Help with "Unit category <Electric flux density> is not defined."   (Jifeng Han - 21 Apr, 2005)
... 1 Message(s)
59 Question: field01 example takes 1 tiny step ?   (R. Michaels - 19 Apr, 2005)
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57 Question: Bug with "G4Transportation is killing track" ?   (Andrey Elagin - 05 Apr, 2005)
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55 Angry: the application of your own field.help me.   (yelongchun2005 - 03 Mar, 2005)
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53 Warning: Charge, momentum and mass are not enough to compute the force   (Bertalan Juhasz - 03 Mar, 2005)
... 3 Message(s)
51 Question: G4Transportation is killing track (Q#45!!!)   (Ilya - 28 Feb, 2005)
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49 Question: Use of Electric Fields in GEANT   (Jason Hayward - 26 Feb, 2005)
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47 None: Diapole Magnatic field   (hsanjeewa1@gsu.edu - 17 Feb, 2005)
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45 Question: G4Transportation is killing track...   (Valentin Kozlov - 02 Feb, 2005)
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43 Question: Electric field array from a TOSCA simulation   (Pablo Cirrone - 16 Dec, 2004)
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41 Question: A little step to solve my problem   (Pablo - 17 Nov, 2004)
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39 Question: Insert a local electric field inside GEANT4   (Pablo - 16 Nov, 2004)
... 7 Message(s)
37 Question: Electric Field does not change electron energy?   (Emil Frlez - 26 Oct, 2004)
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35 None: Local magnetic field with geant4.6.2   (Klaihem - 19 Oct, 2004)
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33 Question: Setting a local magnetic Field   (Laihem - 11 Oct, 2004)
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31 Question: ElectricField ?   (Daniel Barna - 28 Sep, 2004)
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29 Question: Electric Field does not work...   (Dai ho Ko - 29 Aug, 2004)
... 4 Message(s)
27 Question: Setting up a gravity field   (Julian.Bunn@caltech.edu - 23 Aug, 2004)
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25 Question: Volume name inside magnetic field class   (Zarko Pavlovic - 10 Aug, 2004)
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23 None: Step size in Magnetic Tracking   (Dvorak - 03 Aug, 2004)
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21 None: Tracking in magnetic field   (Jens Hasper - 19 Jun, 2004)
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19 None: BlineTracer use   (Valentin Kozlov - 25 May, 2004)
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17 None: Implementation of magnetic field from a table of values   (Jens Hasper - 20 May, 2004)
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15 Question: Field definition and its relation to geometry   (Ilya - 10 May, 2004)
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14 None: What are y and dydx in the equation of motion?   (Bertalan Juhasz - 07 Apr, 2004)
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13 Question: Need help implementing a radial electric field   (Andrew Dummer - 18 Mar, 2004)
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12 None: Low energy electrons in electric field   (Emmanuel Moulin - 19 Jan, 2004)
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11 None: Cosmic Ray Flux   (annamaria - 17 Nov, 2003)
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10 Question: Magnetic Field in a volume   (Nuno Barros - 08 Jul, 2003)
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9 None: tracking in magnetic field   (michel maire - 30 May, 2003)
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8 Question: How to specify the volume applied an uniform electric field?   (Toru Kawashima - 13 Mar, 2003)
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7 None: Appendix of Geant 3 for medical purposes   (Nik Y. Karaseff - 15 Nov, 2002)
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6 Question: Why electron increases in energy when traveling in uniform magnetic field?   (Emil Frlez - 30 Aug, 2002)
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5 Question: tracking in general electric and magnetic field   (Emil Frlez - 28 Aug, 2002)
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4 Sad: Segmentation fault (core dumped) happened in different material and more beams   (Lam YiHua - 19 Jun, 2002)
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3 Question: Field profile in GEANT4   (Valentin Kozlov - 18 Jun, 2002)
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1 Question: Magnetic Field in Volume filled with 'Galactic'   (Peter Gumplinger - 23 Apr, 2001)
... 1 Message(s)
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