[Gate-users] Phase Space File orientation

[G Tom]

Hi all

I have this phase space header fil there the following variables are
recorded:

$RECORD_CONTENTS:
  1   // X is stored ?
  1   // Y is stored ?
  0   // Z is stored ?
  1   // U is stored ?
  1   // V is stored ?
  0   // W is stored ?
  0   // Weight is stored ?
  0   // Extra floats stored ?
  0   // Extra longs stored ?

Where particles are recorded at constant Z = 26.7cm. Z-axis is along(
parallel) to the source to origin axis.

I loaded the files in GATE using :

/gate/world/daughters/name               PhS_Plane
/gate/world/daughters/insert             box
/gate/PhS_Plane/setMaterial              Vacuum
/gate/PhS_Plane/geometry/setXLength          13.0 cm # see
/gate/PhS_Plane/geometry/setYLength          13.0 cm
/gate/PhS_Plane/geometry/setZLength          1 nm
/gate/PhS_Plane/placement/setTranslation     0 0 0 cm
/gate/PhS_Plane/vis/setColor                 white

/gate/source/addSource  v2phsp    phaseSpace
/gate/source/v2phsp/attachTo      PhS_Plane

however, my particles properly emerge from the phase space plane but their
initial direction is radially. I suspect the direction cosines are not in
the right direction when read in GATE
How can I re-orient each particle to point towards the origin in the
attached figure ?

Thanks for any help.

GT
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