[Gate-users] Arbitrary point-wise spectrum

ctrott at bwh.harvard.edu ctrott at bwh.harvard.edu
Thu Nov 8 19:52:22 CET 2007

Dear colleagues,

I'm trying to define a gamma source with a discrete spectrum. The energy
distribution type I used was the "arbitrary point-wise spectrum" or "Arb":

/gate/source/my_source/gps/energytype Arb
/gate/source/my_source/gps/histname energy
/gate/source/my_source/gps/emin 300. keV
/gate/source/my_source/gps/emax 2000. keV
/gate/source/my_source/gps/histpoint 383. 0.043
/gate/source/my_source/gps/histpoint 443. 0.183
/gate/source/my_source/gps/histpoint 1921. 0.224

But when I looked at the results, it seems that all the photons were
started at 1 MeV. What was the problem with my scripts? Or should I use
another energy distribution type?

Many thanks!

Xu-Ping & Cathy

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