[Gate-users] 来自ljlubme at 163.com的邮件

[ljlubme]

Hi user,
I simulate a single ring ECAT EXACT HR+ system,and I find that the counting rate is only 1,400 for a 30 minutes scanning.

the sources as follows:
/gate/source/addSource F18CylinderSource
/gate/source/F18CylinderSource/setActivity 10000. 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/type Volume
/gate/source/F18CylinderSource/gps/shape Cylinder
/gate/source/F18CylinderSource/gps/radius 50.0 mm
/gate/source/F18CylinderSource/gps/halfz 2.0 mm
/gate/source/F18CylinderSource/gps/angtype iso
/gate/source/F18CylinderSource/gps/mintheta 90. deg
/gate/source/F18CylinderSource/gps/maxtheta 90. deg
/gate/source/F18CylinderSource/gps/minphi 0. deg
/gate/source/F18CylinderSource/gps/minphi 360. deg
/gate/source/F18CylinderSource/gps/centre 6.5 0.0 0. cm

How can I improve the counting rate ?
Thankyou
lijun lu