Dear all,
I shall close this thread. Energy and particle fluence of course are not expected to have the same shape. In the latter case, you add +1 in each bin(in the simple case of equal weights) while in the former you add anything between the min and the max value of the bin.
Best regards,
Thomas
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From: owner-fluka-discuss_at_mi.infn.it <owner-fluka-discuss_at_mi.infn.it> on behalf of Primidis, Thomas <Thomas.Primidis_at_liverpool.ac.uk>
Sent: Thursday, July 11, 2019 2:21:30 PM
To: fluka-discuss
Subject: [fluka-discuss]: Discrepancy between total particle fluence and EM-ENERGY
Dear all,
I am having the following unexpected result with the attached input file.
When I am firing 60keV electrons on a 2.5um Gold target and I am scoring the electron, photon and energy fluence that exits on the other side, I would expect the EM-ENERGY spectrum to have the same shape as the ALL-PART spectrum. I expect this because all particles in the simulation would be either electrons or photons so particle fluence spectrum should have the same shape as em-energy fluence spectrum. However, the two spectra shapes have significant differences between them as seen in the image attached. The spikes are high error values.
In the image, the results are taken with different EMFFIX values and are arranged column wise in the order: 0.001,0.002,0.005,0.01,0.02,0.05,0.1,0.2. The horizontal axis is the energy in keV and the vertical axis is the integrated over solid angle particle&energy fluence normalised to their respective maximum values.
What is the reason for this difference?
I would be very interested in knowing that because the goal of this simulation was to find the optimum maximum step length given that the geometry is very small and results are confusing.
Best regards,
Thomas Primidis
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Received on Fri Jul 12 2019 - 12:49:09 CEST