Polynomial source distribution

Advanced Features and User Routines
1

Dear FLUKA experts,
I need to create a source distribution of electrons that follows the function f(x) = ax^5 + bx^4 + cx^3 + dx^2 + ex + f.
I have only used the interface Flair with the built-in sources so far, so I would like to know how I can define my own source of electrons.

Kind regards,
Lovepreet

2

Dear Lovepreet,

I suggest to take a look at the source_newgen.f user routine.

See section 13.2.20.bis} of the manual at 13.2.20} source.f: user-written source | FLUKA (middle of the page) and the following lecture: https://indico.cern.ch/event/956531/contributions/4020241/attachments/2123482/3574575/17_Source_routine_2020_online.pdf

However, you need to implement the mathematical process of sampling a polynomial distribution by yourself.

Cheers,
David

3

Thanks for your answer, Sir.
Is the routine source_newgen.f a different file or it’s what is written in section 13.2.20bis?

Regards,
Lovepreet

4

Dear Lovepreet,

the section 13.2.20bis of the manual contains the description of the source_newgen.f user routine (which is also present in the routine as well)
The lecture however is a bit outdated, a new version will be available soon.

Cheers,
David

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2 posts were split to a new topic: How to add user routines to a Flair project

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A post was merged into an existing topic: How to add user routines to a Flair project