ans-student19-serpenttools

Repository containing examples and slides for ANS 2019 Student Conference

Objectives

1. Provide a modest understanding of the SERPENT Monte Carlo Code
2. Comprehensive overview of serpentTools API
3. Demonstrate capabilities for follow-on analysis

Helpful links:

• SERPENT Website
• SERPENT Wiki
• Repository for serpent-tools
• Main documentation
• Example directory
• Install guide

Workshop tools

SERPENT and serpentTools will be utilized live during the workshop. If you wish to follow along, you will need the following

1. Python environment (3.5+ preferred)
2. Jupyter notebook
3. Latest serpentTools installed

Workshop not-pre-reqs

The following are not necessary to make the workshop benefitial. Basic familiarity with Monte Carlo neutron transport codes (MCNP, SERPENT, SCALE-KENO, etc.) will make some things easier to understand, but not strictly required.

1. Python mastery
2. Knowlege of SERPENT

Layout

• simple - 6x6 toy assembly designed to show basic input structure. Particle count taken to be deliberately low to make demonstrations easier. All subsequent input files use this.
• his - input file for using history capabilities in SERPENT
• det - input file with a collection of detector settings
• dep - input file with depletion steps
• sens - input file for sensitivity calculation
• coe - input file for automated burnup sequence
• archive.sh - archival script used to collect all output files
• files.tgz and file.zip - compressed archives of all output files needed for the analysis.
• files.sha256 and files.md5 - text files containing hashes of compressed archives. Can be verified with sha256sum -c files.sha256 and md5sum -c files.md5
• Makefile - Makefile that can be used to run all SERPENT cases to produce the files contained in files.tgz and files.zip.

Archived files

The compressed files.tgz and files.zip can be extracted with standard unzipping utilities. From the command line,

$ unzip files.zip

or

$ tar xzvf files.tgz

Either of these commands will extract the following files into this directory.

coe.coe
dep_dep.m
dep_res.m
depmtx_fuelpfpr10.m
det_det0.m
hist_his0.m
simple_res.m

Makefile

Using the Makefile, you can run all the SERPENT cases and produce the outputs files used in this workshop. The command make serpent will execute SERPENT on all cases. By default, this looks for sss2 to be in this directory, calling SERPENT with

sss2 -omp 4 {input} > {input}.txt

You can change the SERPENT execution by passing SERPENT_EXE and SERPENT_OPTS during make.

make SERPENT_EXE="mpirun -n 4" SERPENT_OPTS="-omp 4" serpent

would use mpirun with four nodes, and a total of four OMP threads. The generation of the coefficient file, coe.coe, may take a while, as 50 perturbation states are calculated.

The Makefile can also be used to generate the slides for the workshop. The command

make slides

will use pdflatex to build a pdf of the presentation.