Dear FLUKA experts:
A simple model was established in which 1kW, 9.77 MeV electrons bombarded a 1 mm thick Ta, and the usrbin was used to calculate the dose around the target.
The absorbed dose of air at 1 m behind the target is about 83,000 cGy/min, and the ionization chamber data I have learned is about 8,500 cGy/min.
This data is almost 10 times different, I checked the unit conversion ((1.602E-7)*6.389E14*60*100), and there was probably no error.Below is my input file and data
plane.flair (11.2 KB)
plane.inp (6.3 KB)
Note that your beam goes through a 0.5 mm Ta thickness (and not 1 mm), starting in the middle of the target, and this makes already a considerable difference.
Then, make sure to properly model the actual experimental conditions.
Hello David,
Thank you for reaching out on the forum.
It appears that the target now has the correct thickness. However, the electron beam still originates from the center of the target. Please confirm if this is intentional. If not, you can adjust the beam position using the BEAMPOS card.
In the meantime, I will review the other parameters in the input file.
I will let you know shortly.
Best regards,
Tommaso
Thanks to FLUKA experts, I have checked my input file and corrected the beam position (BEAMPOS card), the dose data is compared to Geant4, and the results are basically the same, I believe that I have a problem obtaining the data from the ionization chamber, because I did not perform the experiment. Next, I will further confirm the specific experimental conditions.
Thank you again for your guidance and advice.
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