'No gamma groups in requested SCALE library'

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Alexander Yordanov

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Jan 22, 2025, 8:55:50 AMJan 22
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Dear SCALE team,

I am facing problems with SCALE 6.3.1. 
I am trying to calculate the decay heat using ORIGAMI and ORIGEN sequence. The same input file works fine with SCALE 6.2.4 but not with SCALE 6.3.1. I am getting the following message with 6.3.1:
----------------------------------------

The following message was provided: 'No gamma groups in requested SCALE library'

Insist: g%ngroups > 0, failed in origen_driver.f90, line: 550.

993299

----------------------------------------


I found something interesting (or at least i think so). When I change:

bounds{

neutron=" v7-27n19g "

gamma=" v7-27n19g "

}

to

bounds{

neutron="v7-200n47g"

gamma="v7-200n47g"

}

there is no error message.

In the attached file you can find the entire input case.

Best regards
Alex

new 1.txt

Pavlo Ivanusa

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Jan 22, 2025, 10:11:46 AMJan 22
to SCALE Users Group
The 27n19g doesn't exist anymore in SCALE 6.3. You need to use the 28n19g instead if you want to stick with the 19g for gamma. https://scale-manual.ornl.gov/XSLib.html#the-28n-19g-shielding-libraries
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