FLUKA: NEW-DEFA settings

[Fan Lei <flei@scs.dera.gov.uk>]

Hi Alfredo,

>
> why do you use ICARUS at all?? These are very special cuts!!!! They take a

I used ICARUS simply to take the advantage of its default settings for whole
analogue MC and the low energy thresholds.

> HUGE amount of CPU. To my benchmarks Fluka is usually using the same CPU
> as GCALOR for the same cuts and geometry (but be sure you have really the
> same cuts!) within a factor of 2.

The reason for the huge difference in performance between GCALOR and FLUKA
I mentioned in my previous email is due to delta ray production which was
not
switched on in my GCALOR run. After I switched off delta-ray production in
FLUKA,
the performance of of these two have become much closer.

I have now used the NEW-DEFA for defaults, see the attached inp file. The
manual
says the default cut-off for proton transport is 10 MeV. However as show in
the attached
result file, there are many protons below 10 MeV are detected crossing the
the banduary
surface, which implies the actual cut-off is lower than 10 MeV!? Is there a
way to find out
the exact cut-off values during the run?

Cheers.

Fan





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