| Request ID | 25 | Type of the request | High Priority request | ||
|---|---|---|---|---|---|
| Target | Reaction and process | Incident Energy | Secondary energy or angle | Target uncertainty | Covariance |
| 96-CM-244 | (n,f) SIG | 65 keV-6 MeV | See details | Y | |
| Field | Subfield | Created date | Accepted date | Ongoing action | Archived Date |
| Fission | Fast Reactors (ADMAB) | 04-APR-08 | 12-SEP-08 | Y | |
Send a comment on this request to NEA.
Requester: Prof. Massimo SALVATORES at CADARACHE, FR
Email:
Project (context): NEA WPEC Subgroup 26
Impact:
Accuracy:
Justification document:
Comment from requester:
Additional file attached: SG26-report.html
Review comment:
Entry Status:
Main recent references: Experiments Theory/Evaluation Validation
Requested accuracy is required to meet target accuracies for keff, peak power and burnup for the Accelerator-Driven Minor Actinides Burner (ADMAB). Details are provided in the OECD/NEA WPEC Subgroup 26 Final Report: "Uncertainty and Target Accuracy Assessment for Innovative Systems Using Recent Covariance Data Evaluations" (Final Draft attached).
Target accuracies are specified per system and per energy group when they are not met by the BOLNA estimate of the current (initial) uncertainties.
Energy Range Initial versus target uncertainties (%) Initial SFR EFR GFR LFR ADMAB
6.07 - 2.23 MeV 31 8 12 3 2.23 - 1.35 MeV 44 8 13 14 3 1.35 - 0.498 MeV 50 5 20 8 6 2 498 - 183 keV 37 12 4 183 - 67.4 keV 48 7
OECD/NEA WPEC Subgroup 26 Final Report: "Uncertainty and Target Accuracy Assessment for Innovative Systems Using Recent Covariance Data Evaluations" (link to WPEC Subgroup 26 Report in PDF format, 6 Mb).
SFR: Sodium-cooled Fast Reactor in a TRU burning configuration, i.e., with a Conversion Ratio CR<1
EFR: European Fast Reactor with full recycling of MA and CR~1
GFR: Gas-cooled Fast Reactor also with full recycling of MA
LFR: Lead-cooled Fast Reactor as defined for an IAEA benchmark
ABTR: Advanced Burner Test Reactor Na-cooled core, recently studied within the GNEP initiative
ADMAB: Accelerator-Driven Minor Actinides Burner
PWR: Pressurized Water Reactor
Experimentally the fission probability of the compound nucleus (245Cm) may be studied in detail through the use of a transfer reaction. The fission cross section for n+244Cm may then be inferred from a theoretical estimate of the compound nucleus formation cross section. Probably, this will be adequate for the EFR and GFR requirements and it could be sufficient for the SFR and LFR, as well.
Work in progress (as of SG-C review of May 2018)
Please report any missing information to hprlinfo@oecd-nea.org
