Benchmark of Serpent-2 with MCNP: Application to European DEMO HCPB breeding blanket

Yudong Lu, Guangming Zhou (Corresponding Author), Francisco A. Hernández, Pavel Pereslavtsev, Jaakko Leppänen, Minyou Ye (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

5 Citations (Scopus)


Magnetic confinement fusion reactors such as the European fusion demonstration reactor (EU DEMO) have a very complex geometry, which makes the modelling of the nuclear analyses rather tedious and time consuming. The Monte Carlo neutron transport code Serpent-2 developed by VTT in Finland, is able to directly import CAD geometry, then is considered an attractive alternative to the Monte Carlo N-Particle Transport code (MCNP) for its application on fusion reactors. In the first step, a comparison activity is carried out to benchmark the Serpent-2 with MCNP calculations. Both Serpent-2 and MCNP are used to perform the 3D Monte Carlo neutron and photon coupled transport making use of the EU-DEMO BL2017 model and a grid discrete volume source. A very useful conversion tool (called csg2csg) developed by UKAEA researchers was used to translate the MCNP input model to the Serpent-2 input model. The nuclear performance of the EU DEMO Helium Cooled Pebble Bed breeding blanket, such as tritium breeding ratio (TBR), neutron and photon flux spectra, and nuclear heating are analyzed, and the corresponding results are compared between Serpent-2 and MCNP. This study shows that Serpent-2 is suitable for the application of nuclear analysis for the EU DEMO HCPB breeding blanket.

Original languageEnglish
Article number111583
JournalFusion Engineering and Design
Early online date27 Feb 2020
Publication statusPublished - Jun 2020
MoE publication typeA1 Journal article-refereed


This work has been funded by the National Key Research, Development Program of China (Grant No.: 2017YFE0301501 and No.: 2017YFE0301305) and China Scholarship Council (No.: 201806340163).


  • Fusion
  • Monte Carlo
  • Neutronics
  • Serpent


Dive into the research topics of 'Benchmark of Serpent-2 with MCNP: Application to European DEMO HCPB breeding blanket'. Together they form a unique fingerprint.

Cite this