<DIV>Hi,All</DIV> <DIV>I want to simulation warm sphere sources in cylinder backgrond source.</DIV> <DIV>Here is my scripts:</DIV> <DIV># P H A N T O M G E O M E T R Y----"phantom.mac"<BR>/gate/world/daughters/name Phantom<BR>/gate/world/daughters/insert box<BR>/gate/Phantom/placement/setTranslation 0.0 0.0 0.0 cm<BR>/gate/Phantom/geometry/setXLength 35. cm<BR>/gate/Phantom/geometry/setYLength 35. cm<BR>/gate/Phantom/geometry/setZLength 35. cm<BR>/gate/Phantom/setMaterial Air<BR>/gate/Phantom/vis/forceWireframe<BR>/gate/Phantom/vis/setColor gray</DIV> <DIV># Outer SHell of Phantom<BR># Center Section of Upper Outer Shell<BR>/gate/Phantom/daughters/name outershell<BR>/gate/Phantom/daughters/insert cylinder<BR>/gate/outershell/geometry/setRmax 11. cm<BR>/gate/outershell/geometry/setRmin 10. cm<BR>/gate/outershell/geometry/setHeight 20 cm<BR>/gate/outershell/setMaterial
Plastic<BR>/gate/outershell/vis/forceWireframe<BR>/gate/outershell/vis/setColor red</DIV> <DIV># Water in Phantom<BR>/gate/Phantom/daughters/name interior<BR>/gate/Phantom/daughters/insert cylinder<BR>/gate/interior/geometry/setRmax 10 cm<BR>/gate/interior/geometry/setRmin 0.0 cm<BR>/gate/interior/geometry/setHeight 20 cm<BR>/gate/interior/setMaterial Water<BR>/gate/interior/vis/forceWireframe<BR>/gate/interior/vis/setColor blue</DIV> <DIV> </DIV> <DIV># 10 mm Sphere<BR>/gate/interior/daughters/name sphere10<BR>/gate/interior/daughters/insert sphere<BR>/gate/sphere10/placement/setTranslation 2.86 4.95367 0 cm<BR>/gate/sphere10/geometry/setRmax 1 cm<BR>/gate/sphere10/geometry/setRmin 0.0 cm<BR>/gate/sphere10/setMaterial Air<BR>#/gate/sphere10/vis/forceWireframe<BR>/gate/sphere10/vis/setColor gray</DIV> <DIV># 10 mm Sphere Exterior<BR>/gate/interior/daughters/name sphere10out<BR>/gate/interior/daughters/insert
sphere<BR>/gate/sphere10out/placement/setTranslation 2.86 4.95367 3.7 cm<BR>/gate/sphere10out/geometry/setRmax 0.6 cm<BR>/gate/sphere10out/geometry/setRmin 0.5 cm<BR>/gate/sphere10out/setMaterial Plastic<BR>#/gate/sphere10out/vis/forceWireframe<BR>/gate/sphere10out/vis/setColor red</DIV> <DIV># A t t a c h P h a n t o m<BR>/gate/Phantom/attachPhantomSD<BR>/gate/interior/attachPhantomSD<BR>/gate/sphere10/attachPhantomSD<BR>/gate/sphere10out/attachPhantomSD<BR>/gate/outershell/attachPhantomSD</DIV> <DIV> </DIV> <DIV> </DIV> <DIV># F A S T P R O D U C T I O N M O D U L E F O R F - 1 8 I S O T O P E S---"source.mac"<BR>/gate/source/addSource BackgroundSource<BR>/gate/source/BackgroundSource/setActivity 50000. becquerel<BR>/gate/source/BackgroundSource/gps/particle e+<BR>/gate/source/BackgroundSource/setForcedUnstableFlag
true<BR>/gate/source/BackgroundSource/setForcedHalfLife 6586 s<BR>/gate/source/BackgroundSource/gps/energytype Fluor18<BR>/gate/source/BackgroundSource/gps/type Volume<BR>/gate/source/BackgroundSource/gps/shape Cylinder<BR>/gate/source/BackgroundSource/gps/radius 10 cm<BR>/gate/source/BackgroundSource/gps/halfz 20 cm<BR>/gate/source/BackgroundSource/gps/confine interior_P<BR>/gate/source/BackgroundSource/gps/angtype iso<BR>/gate/source/BackgroundSource/gps/centre 0.0 0.0 0. cm</DIV> <DIV>/gate/source/addSource SphereSource<BR>/gate/source/SphereSource/setActivity 50000. becquerel<BR>/gate/source/SphereSource/gps/particle e+<BR>/gate/source/SphereSource/setForcedUnstableFlag true<BR>/gate/source/SphereSource/setForcedHalfLife 6586 s<BR>/gate/source/SphereSource/gps/energytype Fluor18<BR>/gate/source/SphereSource/gps/type Volume<BR>/gate/source/SphereSource/gps/shape Sphere<BR>/gate/source/SphereSource/gps/radius 1 cm<BR>/gate/source/SphereSource/gps/confine
sphere10_P<BR>/gate/source/SphereSource/gps/angtype iso<BR>/gate/source/SphereSource/gps/centre 0.0 0.0 0. cm<BR></DIV> <DIV>When I run the simulate,It shows the error. I think the sphere source and the blackground sources are overlapped.But how to solve this problem</DIV> <DIV> </DIV> <DIV> </DIV> <DIV>Thanks in advance!</DIV> <DIV> </DIV> <DIV><BR> </DIV><p> 
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