[fluka-discuss]: RE: Energy Deposition

From: Anton Lechner <Anton.Lechner_at_cern.ch>
Date: Thu, 23 Aug 2018 13:35:31 +0000

Dear Modeste,

Indeed, flair is writing the data to the file you are referring to. The first two columns are the lower and upper boundary of the z-bins in cm (it seems the first bin is not written, maybe you changed the plotting range in the "Projection&Limits" panel?). The third column is the z-projection in GeV/cm3 (in your case there is no mathematical operation behind the projection since you use only 1 bin in x and y).

Just another remark: you use PRECISIO as defaults, which is suitable in your case. However you should decrease the production and transport thresholds for electrons/photons via the EMFCUT card (you have to issue two separate EMFCUT cards, one for the transport and the other for the production cuts). With PRECISIO the thresholds are generally 100 keV or electrons and 33keV for photons. The CSDA range of 100 keV electrons in silicon is still around 80 um. You should lower the thresholds to the lowest recommended values (1 keV - see manual), considering also that you use a very fine binning in z (1um bin size).

Cheers, Anton

From: Tchakoua Tchouaso, Modeste [tmt6z4_at_mail.missouri.edu]
Sent: 21 August 2018 21:31
To: Anton Lechner; fluka-discuss_at_fluka.org
Subject: Re: Energy Deposition

Dear Anton,

Thanks for advising on this. I was able to plot a 1D profile of the energy deposition (at least I believe I did).

I have a follow-up question. It is possible to output the data from the graph directly?

Inside the output folder, I saw a file with name - score_52_plot.dat( I have update the program with 40 change to 52 and number of bins in the x-direction changed from 30 to 1). My understanding is that the value in the 3rd row is the energy deposition in GeV/cm. What about the boundaries corresponding to these values of Edep (the z-ordinates) ?



From: Anton Lechner <Anton.Lechner_at_cern.ch>
Sent: Tuesday, August 21, 2018 11:59:26 AM
To: Tchakoua Tchouaso, Modeste; fluka-discuss_at_fluka.org
Subject: RE: Energy Deposition

Dear Modeste,

The energy deposition entries (GeV/cm3) of your cartesian mesh are written after the statement "accurate deposition along the tracks requested" in the "score_40.bnn.lis" file (there are 15000 numbers since you have 30x1x500=15000 bins). The individual bin boundaries are not explicitly written in the file, but can be easily calculated from binning coordinates (min, max, number of bins) shown at the top of the file. If you want to process the data yourself you need to read in the energy density values by looping over the three coordinates (3 nested loops). However, Flair has already such plotting and data processing functionalities included. If you want to plot the energy deposition projected on one axis (eg. z-axis) this can be easily done with Flair (1D projection). Otherwise you need to do such manipulations manually.

The statistical errors of the bin entries then follow in the same order after the line "Percentage errors follow in ...".

Cheers, Anton

From: owner-fluka-discuss_at_mi.infn.it [owner-fluka-discuss_at_mi.infn.it] on behalf of Tchakoua Tchouaso, Modeste [tmt6z4_at_mail.missouri.edu]
Sent: 21 August 2018 17:34
To: fluka-discuss_at_fluka.org
Subject: [fluka-discuss]: Energy Deposition

Dear Expert,

I am new to Fluka and would like to benefit from your expert knowledge.

I am considering plotting the energy deposition profile using the USRBIN score card with an external package. I ran the simulation in Flair, processed the data and exported it to ascii format. I am wanting to plot the energy deposition vs distance(in the z-axis) but not sure where to find this information from the output file.

Attached is the output file. Any help will be highly appreciated.


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Received on Thu Aug 23 2018 - 16:48:50 CEST

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