A radiation transport workshop using PENTRAN, a Parallel 3-D hybrid Sn (Discrete Ordinates) – CRT (Characteristic Ray Trace) deterministic radiation transport code, with tools for CADIS adjointsupport for Monte Carlo variance reduction (including MCNP®) with a tutorial demonstration, presented and hosted by Engineering and Software System Solutions, Inc. (ES3),supported by G E SJODEN LLC and MW Nuclear LLC. ES3 is an authorized re-seller of PENTRAN, supporting tools, cross section generation, and consulting for nuclear applications.

PENTRAN provides users with a 3-D mesh generation capability to build 3-D Sn geometries to set up, run, and visualize PENTRAN 3-D Cartesian block adaptive mesh solutions withmaterial mass/volume balance capabilities with any standard multigroup cross sections. Parallelization can be decomposed on angular, energy, and/or spatial domains.

In this workshop, attendees will set up, run, and visualize shielding (forward and adjoint) and criticality models starting from agiven problem geometry, as well as generate a WWINP file to accelerate an MCNP® thick shielding problem. In addition, all tools and support that come with PENTRAN will be discussed and utilized in problem solving. Attendees wishing to run PENTRAN should bring a Windows 10 or 11 laptop running WSL/Ubuntu Linux, or an Ubuntu or Mint/Mate Linux laptop, with at least 12 Gb of RAM and 4 virtual CPUs (use “lscpu” command in Linux to determine system capabilities).

PENTRAN access falls under ECCN 0D999(b) (US Dept of Commerce, 21 Mar 2011), and is generally accessible for US persons and people from most countries (excluded: Cuba; Iraq; Iran; North Korea; Sudan; Syria). Attendees wishing to also runMCNP® and accelerate it using a PENTRAN generated adjoint solution processed in a WWINP file (read by MCNP®) must have MCNP®6.2.0 or 6.3.0 installed (MCNP® is a Trade Mark of Triad National Security, LLC).

ES3 will require proof of citizenship to attend the workshop as PENTRAN is restricted software.

Requirements: Must Bring a Valid Form of Government Issued ID & a Proof of Citizenship (such as birth certificates, H1B Visas, Passports, Certification of Citizenship, etc) as they will be checked at the door before entry

You must bring the original document - photocopies or digital copies will not be accepted. ALSO: If either of these documents are not present, access to the workshop will be denied and no refunds will be granted

Please submit any questions regarding this process to nuclear.systems@es3inc.com.

All attendees will receive a 1-month access license of PENTRAN and supporting tools following the workshop.