[Gate-users] error "phantom had already been stored in /gate/. Object pointer is overwritten"

Sarah Blind sarah.blind at univ-lorraine.fr
Mon May 2 17:07:14 CEST 2022

Dear Gate users, 

I come back to you because I feel stuck on this phantom problem. 

I use a mouse phantom and I was able to run one simulation properly but since then I'm not able to run any other simulation. 
I get the following problem : 

-------- WWWW ------- G4Exception-START -------- WWWW ------- 
*** G4Exception : DET1010 
issued by : G4SDStructure::AddNewDetector() 
phantom had already been stored in /gate/. Object pointer is overwritten. 
It's users' responsibility to delete the old sensitive detector object. 
*** This is just a warning message. *** 
-------- WWWW -------- G4Exception-END --------- WWWW ------- 

If someone has an idea, it would help me a lot! 

Many thanks, 
Sarah Blind 

Here is my GATE world.mac file : 


/gate/world/geometry/setXLength 1 m 
/gate/world/geometry/setYLength 1 m 
/gate/world/geometry/setZLength 1 m 
/gate/world/setMaterial Air 

/gate/HounsfieldMaterialGenerator/SetMaterialTable ../data/Schneider2000MaterialsTable.txt 
/gate/HounsfieldMaterialGenerator/SetDensityTable ../data/Schneider2000DensitiesTable.txt 
/gate/HounsfieldMaterialGenerator/SetDensityTolerance 0.1 g/cm3 
/gate/HounsfieldMaterialGenerator/SetOutputMaterialDatabaseFilename ../data/mouse-HUmaterials.db 
/gate/HounsfieldMaterialGenerator/SetOutputHUMaterialFilename ../data/mouse-HU2mat.txt 

/gate/world/daughters/name mouse 

/gate/world/daughters/insert ImageNestedParametrisedVolume 

/gate/geometry/setMaterialDatabase ../data/mouse-HUmaterials.db 
/gate/mouse/geometry/setHUToMaterialFile ../data/mouse-HU2mat.txt 
/gate/mouse/geometry/setImage ../data/mouse.hdr 


/gate/mouse/placement/setTranslation 0 -25 0 cm 
/gate/mouse/placement/setRotationAxis 1 0 0 
/gate/mouse/placement/setRotationAngle 90 deg 


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