Error no cross section.xml file was specified

User Support
1

I followed the steps in the post here: OpenMC cross_section.xml problem but I still got the same error, I’m not sure what I did wrong, here’s what I typed in the terminal, I still get the error no cross sections. xml file was specified, I downloaded ENDF/B-VII.1 and my openmc version is 0.13.1, I’m using ubuntu:

image
image743×264 33.7 KB

2

here’s the error I get:

image
image1408×431 64.3 KB

3

I tried changing the location of the downloaded folder im openmc-env and it still gives me the error that the file in that location doesn’t exist:

image
image1409×67 12.6 KB

I also tried opening it in the terminal:
image
image1517×429 101 KB

openmc.plot_geometry(output=False)
I also get these messages and I’m not sure I quite understand it:
image
image1453×650 93.9 KB

4

I updated openmc to 0.13.2 to try the other fix but I got the same error:

image
image1462×534 78.5 KB

5

@Pranto Could you help, please?

6

I tried the fix in here and it seems to work, I finally got a different error: GitHub - openmc-data-storage/openmc_data_downloader: A Python package for downloading h5 cross section files for use in OpenMC.

image
image1437×622 82.8 KB

7

Hi @Dalia,

Can you specify what fix you used from the data downloader?

Tagging @shimwell here, the author of that package.

-Patrick

8

Just to mention that issue got solved over in another thread with this comment Could not find nuclide U235 - #8 by Shimwell

9

I used the lines in this GitHub source: GitHub - openmc-data-storage/openmc_data_downloader: A Python package for downloading h5 cross section files for use in OpenMC. made by @Shimwell and I also needed to include missing nuclides: openmc_data_downloader -l TENDL-2019 -e U Li Na Si Fe O H B Zr
With the help of @Shimwell