[Gate-users] DISTRIBUTION_SOURCE_PET

[LORENA VAZQUEZ CANELAS]

Dear Gaters,
I have a problem.
I want to simulate the sensitivity of the PET. I am using the NEMA NU
2-2007.
I use a source F-18 inside five cylinders. Therefore, I have it, the
following:
--------
PHANTOM:
--------

#    CYLINDER 5
/gate/world/daughters/name                   phantom5
/gate/world/daughters/insert                 cylinder
/gate/phantom5/setMaterial                   Air
/gate/phantom5/vis/setColor                  grey
/gate/phantom5/geometry/setRmax              0.955 cm
/gate/phantom5/geometry/setRmin              0.83 cm
/gate/phantom5/geometry/setHeight            70 cm
/gate/phantom5/placement/setTranslation      0 0 0 mm

/gate/phantom5/attachPhantomSD

#    CYLINDER 4
/gate/phantom5/daughters/name                 phantom4
/gate/phantom5/daughters/insert               cylinder
/gate/phantom4/setMaterial                    Air
/gate/phantom4/vis/setColor                   blue
/gate/phantom4/geometry/setRmax               0.795 cm
/gate/phantom4/geometry/setRmin               0.67 cm
/gate/phantom4/geometry/setHeight             70 cm
/gate/phantom4/placement/setTranslation       0 0 0 mm

/gate/phantom4/attachPhantomSD

#    CYLINDER 3
/gate/phantom4/daughters/name                 phantom3
/gate/phantom4/daughters/insert               cylinder
/gate/phantom3/setMaterial                    Air
/gate/phantom3/vis/setColor                   yellow
/gate/phantom3/geometry/setRmax               0.635 cm
/gate/phantom3/geometry/setRmin               0.51 cm
/gate/phantom3/geometry/setHeight             70 cm
/gate/phantom3/placement/setTranslation       0 0 0 mm

/gate/phantom3/attachPhantomSD

#    CYLINDER 2
/gate/phantom3/daughters/name                 phantom2
/gate/phantom3/daughters/insert               cylinder
/gate/phantom2/setMaterial                    Air
/gate/phantom2/vis/setColor                   green
/gate/phantom2/geometry/setRmax               0.475 cm
/gate/phantom2/geometry/setRmin               0.35 cm
/gate/phantom2/geometry/setHeight             70 cm
/gate/phantom2/placement/setTranslation       0 0 0 mm

/gate/phantom2/attachPhantomSD

#    CYLINDER 1
/gate/phantom2/daughters/name                 phantom1
/gate/phantom2/daughters/insert               cylinder
/gate/phantom1/setMaterial                    Air
/gate/phantom1/vis/setColor                   red
/gate/phantom1/geometry/setRmax               0.32 cm
/gate/phantom1/geometry/setRmin               0.195 cm
/gate/phantom1/geometry/setHeight             70 cm
/gate/phantom1/placement/setTranslation       0 0 0 mm

/gate/phantom1/attachPhantomSD

--------
SOURCE:
--------
/gate/source/addSource                     F18CylinderSource
/gate/source/F18CylinderSource/setActivity         50. becquerel
/gate/source/F18CylinderSource/gps/particle         e+
/gate/source/F18CylinderSource/setForcedUnstableFlag     true
/gate/source/F18CylinderSource/setForcedHalfLife     6586 s
/gate/source/F18CylinderSource/gps/energytype         Fluor18
/gate/source/F18CylinderSource/gps/shape        Annulus
/gate/source/F18CylinderSource/gps/type         Volume
/gate/source/F18CylinderSource/gps/radius0        0.1 cm
/gate/source/F18CylinderSource/gps/radius        0.3 cm
/gate/source/F18CylinderSource/gps/halfz        35 cm

/gate/source/F18CylinderSource/gps/angtype         iso
/gate/source/F18CylinderSource/gps/mintheta        0. deg
/gate/source/F18CylinderSource/gps/maxtheta        180. deg
/gate/source/F18CylinderSource/gps/minphi        0. deg
/gate/source/F18CylinderSource/gps/maxphi        360. deg
/gate/source/F18CylinderSource/gps/centre         0. 0. 0. cm
/gate/source/list


According to the photo, emissions occur only in the center of the source.
But i think that events should be seen throughout the source continuously
and uniformly. Can you do it?

-- 

LORENA VÁZQUEZ CANELAS
-- 
LRI - Datación (Despacho Técnicos)
Calle Espejo, s/n, 37008 - Salamanca (Spain)
TEL: +34 923 294930 ext:4932 email: lorena.vazquez at usal.es
web: http://campus.usal.es/~lri/
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