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Dear GATE users,<br>
<br>
We are trying to acquire coincidences (ASCII output) using two LGSO crystals and a Ge-68 source in between. We are able to see the singles but, the coincidence file created is empty...
<br>
We would appreciate if you could help us with this.<br>
Thank you very much,<br>
<br>
<b>Please see the code below:</b><br>
<br>
<span>#=====================================================<br>
</span>
<div># VISUALISATION <br>
</div>
<div>#=====================================================<br>
</div>
<div><br>
</div>
<div>/vis/open OGLSX<br>
</div>
<div>/vis/drawVolume<br>
</div>
<div>/tracking/storeTrajectory 1<br>
</div>
<div>/vis/scene/add/trajectories <br>
</div>
<div>/vis/scene/endOfEventAction accumulate<br>
</div>
<div>/vis/viewer/zoom 3<br>
</div>
<div><br>
</div>
<div>#=======================================================<br>
</div>
<div># G E O M E T R Y<br>
</div>
<div>#=======================================================<br>
</div>
<div><br>
</div>
<div>/gate/geometry/setMaterialDatabase ./GateMaterials.db<br>
</div>
<div><br>
</div>
<div># W O R L D<br>
</div>
<div>/gate/world/geometry/setXLength 35. cm<br>
</div>
<div>/gate/world/geometry/setYLength 35. cm<br>
</div>
<div>/gate/world/geometry/setZLength 35. cm<br>
</div>
<div>/gate/world/setMaterial Air<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div># S Y S T E M<br>
</div>
<div>/gate/world/daughters/name cylindricalPET<br>
</div>
<div>/gate/world/daughters/insert cylinder<br>
</div>
<div><br>
</div>
<div>/gate/cylindricalPET/geometry/setRmax 30. mm<br>
</div>
<div>/gate/cylindricalPET/geometry/setRmin 16. mm<br>
</div>
<div>/gate/cylindricalPET/geometry/setHeight 5 mm<br>
</div>
<div>/gate/cylindricalPET/placement/setTranslation 0 0 0 cm<br>
</div>
<div>/gate/cylindricalPET/setMaterial Air<br>
</div>
<div><br>
</div>
<div># FIRST LEVEL OF THE SYSTEM<br>
</div>
<div>/gate/cylindricalPET/daughters/name box1<br>
</div>
<div>/gate/cylindricalPET/daughters/insert box<br>
</div>
<div>/gate/box1/placement/setTranslation 23. 0 0 mm<br>
</div>
<div>/gate/box1/geometry/setXLength 11. mm<br>
</div>
<div>/gate/box1/geometry/setYLength 11. mm<br>
</div>
<div>/gate/box1/geometry/setZLength 4. mm<br>
</div>
<div>/gate/box1/setMaterial Air<br>
</div>
<div>/gate/box1/vis/setColor yellow<br>
</div>
<div><br>
</div>
<div># C R Y S T A L<br>
</div>
<div>/gate/box1/daughters/name box2<br>
</div>
<div>/gate/box1/daughters/insert box<br>
</div>
<div>/gate/box2/geometry/setXLength 10. mm<br>
</div>
<div>/gate/box2/geometry/setYLength 3. mm<br>
</div>
<div>/gate/box2/geometry/setZLength 3. mm<br>
</div>
<div>/gate/box2/setMaterial LGSO<br>
</div>
<div>/gate/box2/placement/setTranslation 0 0 0 mm<br>
</div>
<div>/gate/box2/vis/setColor red<br>
</div>
<div><br>
</div>
<div># R E P E A T R S E C T O R <br>
</div>
<div>/gate/box1/repeaters/insert ring<br>
</div>
<div>/gate/box1/ring/setRepeatNumber 2<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>#=======================================================<br>
</div>
<div># Attach<br>
</div>
<div>#=======================================================<br>
</div>
<div><br>
</div>
<div># A T T A C H V O L U M E S T O A S Y S T E M <br>
</div>
<div>/gate/systems/cylindricalPET/rsector/attach box1 <br>
</div>
<div>/gate/systems/cylindricalPET/module/attach box2 <br>
</div>
<div><br>
</div>
<div># D E F I N E A S E N S I T I V E D E T E C T O R<br>
</div>
<div>/gate/box2/attachCrystalSD<br>
</div>
<div><br>
</div>
<div>#/gate/box2/attachCrystalSD vglue 1cm <br>
</div>
<div><br>
</div>
<div>#=====================================================<br>
</div>
<div># P H Y S I C S<br>
</div>
<div>#=====================================================<br>
</div>
<div><br>
</div>
<div>/gate/physics/addPhysicsList QGSP_BERT_EMV<br>
</div>
<div><br>
</div>
<div># C O I N C I D E N C E S O R T E R<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>/gate/digitizer/Coincidences/setWindow 10. ns <br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>#=======================================================<br>
</div>
<div># Source<br>
</div>
<div>#=======================================================<br>
</div>
<div><br>
</div>
<div>/gate/cylindricalPET/daughters/name cilindro<br>
</div>
<div>/gate/cylindricalPET/daughters/insert cylinder<br>
</div>
<div>/gate/cilindro/geometry/setRmax 12. mm<br>
</div>
<div>/gate/cilindro/geometry/setHeight 6. mm<br>
</div>
<div>/gate/cilindro/placement/setTranslation 0. 0. 0. cm<br>
</div>
<div>/gate/cilindro/setMaterial PMMA<br>
</div>
<div>/gate/cilindro/vis/setColor green<br>
</div>
<div><br>
</div>
<div>/gate/source/addSource Ge68<br>
</div>
<div>/gate/source/Ge68/setActivity 10000000 Bq<br>
</div>
<div>/gate/source/Ge68/gps/particle e+<br>
</div>
<div>/gate/source/Ge68/setForcedUnstableFlag true<br>
</div>
<div>/gate/source/Ge68/setForcedHalfLife 23410080. s <br>
</div>
<div>/gate/source/Ge68/gps/monoenergy 1889.1 keV <br>
</div>
<div>/gate/source/Ge68/gps/type Plane<br>
</div>
<div>/gate/source/Ge68/gps/shape Circle<br>
</div>
<div>/gate/source/Ge68/gps/radius 0.5 mm<br>
</div>
<div>/gate/source/Ge68/gps/angtype iso<br>
</div>
<div>/gate/source/Ge68/gps/centre 0. 0. 0. cm<br>
</div>
<div>/gate/source/list<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div># P H A N T O M D E F I N E D A S S E N S I T I V E <br>
</div>
<div>/gate/cilindro/attachPhantomSD <br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>#=====================================================<br>
</div>
<div># INITIALISATION<br>
</div>
<div>#=====================================================<br>
</div>
<div><br>
</div>
<div>/gate/run/initialize<br>
</div>
<div><br>
</div>
<div>#=====================================================<br>
</div>
<div># D A T A O U T P U T <br>
</div>
<div>#=====================================================<br>
</div>
<div><br>
</div>
<div>/gate/output/ascii/enable<br>
</div>
<div>/gate/output/ascii/setFileName LGSO_<br>
</div>
<div>/gate/output/ascii/setOutFileHitsFlag 0<br>
</div>
<div>/gate/output/ascii/setOutFileSinglesFlag 1<br>
</div>
<div>/gate/output/ascii/setOutFileCoincidencesFlag 1<br>
</div>
<div><br>
</div>
<div>#/gate/output/root/enable<br>
</div>
<div>#/gate/output/root/setFileName LGSO_RR<br>
</div>
<div>#/gate/output/root/setRootHitFlag 0<br>
</div>
<div>#/gate/output/root/setRootSinglesFlag 1<br>
</div>
<div>#/gate/output/root/setRootOpticalFlag 0<br>
</div>
<div><br>
</div>
<div><br>
</div>
<div>#=====================================================<br>
</div>
<div># ACQUISITION<br>
</div>
<div>#=====================================================<br>
</div>
<div><br>
</div>
<div>/gate/application/setTimeSlice 1 s<br>
</div>
<div>/gate/application/setTimeStart 0 s<br>
</div>
<div>/gate/application/setTimeStop 30 s<br>
</div>
<div>/gate/application/startDAQ<br>
</div>
<div><br>
</div>
<span></span><br>
</div>
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