Re: [fluka-discuss]: Error with material assignment with new version.

From: George Kharashvili <>
Date: Thu, 17 May 2018 13:19:34 -0400 (EDT)

Hi Mike,

The message about the old flair expression is a warning. Take a look at this thread for more on this topic:

The reason why your input does not run is related to the FUDGEM parameter in the EMF-CUT with SDUM=PROD-CUT - the final message in the .err file:
 *** Atomic electron contribution to mcs for material 3(HYDROGEN) set to 0, are you sure? ***
 *** if so re-enter it as 1.E-05 and run again, if not check the manual for the ***
 *** EMFCUT card, PROD-CUT, what(3), execution stopped meanwhile ***

This topic was briefly discussed here:

I hope this clears it up for you.
Best regards,

----- Original Message -----
From: "Michael Aiken" <>
To: "FLUKA Discussion List" <>
Sent: Tuesday, May 15, 2018 11:28:02 PM
Subject: [fluka-discuss]: Error with material assignment with new version.

I updated recently to the new version, and I'm having issues with one of my previously running simulation files (attached). The .err file shows a host of "old flair expression format no longer supported" messages as well as one detailing an incorrect material set. I can't seem to find what's hanging it up. I tried a number of other more simple simulations, and they are running perfectly fine. But this one and it's variants that I've created do not run any primaries.

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Received on Thu May 17 2018 - 20:32:01 CEST

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