[gate-users] Benchmark

[Vandana Kohli]

Dear Jianfeng,
I was using Fedora core 4 for sometime. It has had issues with memory leak 
and all that stuff. The GATE software has not been tested for Fedora core 4. 
I downgraded to Fedora core 3. That is what I am using right now.
Vandana Kohli

 On 9/11/05, Jianfeng He <jfenghe at petnm.unimelb.edu.au> wrote: 
> 
> Dear all,
> 
> Has somebody validated successfully the benchmarkPET with GATE package
> in the following environment:
> Fedora Core 4
> gcc 4.0.0
> Geant4.7.0.p01
> CLHEP 1.8.1.0 <http://1.8.1.0>,
> Root 4.03/04,
> GATE2.2.0
> 
> After installation and benchmark, I got a strange problem about
> benchmark result that one detector head was lost in the plots of the
> benchmark compared with the reference plots of benchmark(normally it
> should be 8 repeat head).
> 
> I modified the camera.mac file of bechmark related to the part of repeat
> head, adding one more the setRepeatNumber from 8 to 9, then running
> benchmark again. The result of benchmark seems to be close the reference
> as follow:
> 
> Acquisition start time = 0 [s]
> Acquisition stop time = 240 [s]
> O-15 decay factor = 0.546383
> F-18 decay factor = 0.987477
> O-15 initial activity = 100000 [Bq]
> F-18 initial activity = 100000 [Bq]
> O-15 decays = 1.31132e+07
> F-18 decays = 2.36994e+07
> ==> Expected total number of decays during the acquisition is 3.68126e
> +07 +/- 6067.34
> There are 3.68072e+07 recorded decays
> There are 314545 true unscattered coincidences
> There are 24421 random coincidences
> There are 369822 scattered coincidences
> ==> there are 708788 coincidences (true, scattered, and random)
> ==> global scatter fraction = 0.540385
> ==> absolute sensitivity = 0.854573 %
> Measured O-15 life-time = 123.607 [s]
> Nominal O-15 life-time = 122.24 [s]
> ==> difference = 1.11809 %
> Gamma acolinearity FWHM = 0.606303 degree (expected: 0.58)
> 
> Does anybody have any idea why one detector head is lost? Thanks a lot!
> 
> Regards,
> 
> Jianfeng
> 
> 
> 
> 
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