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Forum: Fields: Magnetic and Otherwise
Re: Question Quadrupole magnetic field (Sourav Tarafdar)
Re: Feedback Re: Quadrupole magnetic field (Gumplinger Peter)
Date: 05 May, 2015
From: John Apostolakis <John Apostolakis>

Peterís answer is correct.  All the current magnetic fields in Geant4 refer to the global reference frame.

John Apostolakis,  PH Department, CERN

> On 05 May 2015, at 22:36, Gumplinger Peter <> wrote:
> *** Discussion title: Fields: Magnetic and Otherwise
>> G4QuadrupoleMagField *Quad = new G4QuadrupoleMagField( G4double
>> pGradient, G4ThreeVector pOrigin , G4RotationMatrix* pMatrix)
>> My question is whether "pOrigin" is in mother volume coordinate system
>> or in local coordinate frame ?
> Please, see:
> It seems 'pOrigin' are the coordinates of the magnet centre in the
> global reference frame.
> -------------------------------------------------------------
> Visit this GEANT4 at message (to reply or unsubscribe) at: 

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