Request ID	48		Type of the request	Special Purpose Quantity
Target	Reaction and process	Incident Energy	Secondary energy or angle	Target uncertainty	Covariance
30-ZN-67	(n,p) SIG,SPA	252Cf(sf)		2-5	Y
Field	Subfield	Date Request created	Date Request accepted	Ongoing action
Dosimetry	Fast fission, fusion, medical	06-OCT-17	06-OCT-17

Requester: Dr Stanislav SIMAKOV at KARLSRUHE, GER
Email: stanislav.simakov@partner.kit.edu

Project (context): IRDFF project

Impact:
The International Reactor Dosimetry and Fusion File (IRDFF) aims at providing evaluated neutron dosimetry reactions validated for all applications related to fission reactors and fusion technology development [IAEA2017].

Accuracy:
2%-5%

Justification document:
Accurate cross sections as well as spectrum-averaged cross sections (SACS) in relevant and well-characterized neutron fields are essential for improvement and validation of the evaluated data [Simakov2017].

Comment from requester:
Measurements of the spectrum-averaged cross section are missing for validation purposes.

References

[IAEA2017] IAEA CRP on Testing and Improving the International Reactor Dosimetry and Fusion File (IRDFF),
http://www-nds.iaea.org/IRDFFtest/.
[Simakov2017] S. Simakov, et al., “Proposals for new measurements for IRDFF community and HPRL”, September 2017.

Review comment:

Entry Status:
Work in progress (as of SG-C review of May 2018)

Main references:
Please report any missing information to hprlinfo@oecd-nea.org

Theory/Evaluation

A. Trkov et al., IRDFF-II: A New Neutron Metrology Library, Nuclear Data Sheets 163 (2020) 1

Additional file attached:Simakov2017.pdf
Additional file attached:

Request ID 50 Type of the request Special Purpose Quantity

Target Reaction and process Incident Energy Secondary energy or angle Target uncertainty Covariance

28-NI-60 (n,p) SIG,SPA 252Cf(sf) 2-5 Y

Field Subfield Date Request created Date Request accepted Ongoing action

Dosimetry Fast fission, D-T fusion 06-OCT-17 06-OCT-17

Requester: Dr Stanislav SIMAKOV at KARLSRUHE, GER
Email: stanislav.simakov@partner.kit.edu

Project (context): IRDFF project

Accuracy:
2%-5%

Comment from requester:
New measurements of the spectrum-averaged cross section are requested to solve C/E discrepancy. See SPA_CE_Cf252.pdf below.

References

[IAEA2017] IAEA CRP on Testing and Improving the International Reactor Dosimetry and Fusion File (IRDFF),
http://www-nds.iaea.org/IRDFFtest/.
[Simakov2017] S. Simakov, et al., “Proposals for new measurements for IRDFF community and HPRL”, September 2017.

Review comment:

Entry Status:
Work in progress (as of SG-C review of May 2018)

Main references:
Please report any missing information to hprlinfo@oecd-nea.org

Experiments

M. Schulc, et al., Validation of IRDFF-II library by means of 252Cf spectral averaged cross sections, Applied Radiation and Isotopes 155 (2020) 108937

Theory/Evaluation

A. Trkov et al., IRDFF-II: A New Neutron Metrology Library, Nuclear Data Sheets 163 (2020) 1

Additional file attached:Simakov2017.pdf
Additional file attached:SPA_CE_Cf252.pdf

Request ID 64 Type of the request Special Purpose Quantity

Target Reaction and process Incident Energy Secondary energy or angle Target uncertainty Covariance

15-P-31 (n,p) SIG,SPA 252Cf(sf)-235U(n,f) 2-5 Y

Field Subfield Date Request created Date Request accepted Ongoing action

Dosimetry Fast fission, D-T fusion 06-OCT-17 06-OCT-17

Requester: Dr Stanislav SIMAKOV at KARLSRUHE, GER
Email: stanislav.simakov@partner.kit.edu

Project (context): IRDFF project

Accuracy:
2%-5%

Comment from requester:
Measurements of the 252Cf(sf)-spectrum-averaged cross section are missing for validation purposes. New measurements of the 235U(n,f)-spectrum-averaged cross section are requested to solve C/E discrepancy. See SPA_CE_Cf252U235.pdf below.

References

[IAEA2017] IAEA CRP on Testing and Improving the International Reactor Dosimetry and Fusion File (IRDFF),
http://www-nds.iaea.org/IRDFFtest/.
[Simakov2017] S. Simakov, et al., “Proposals for new measurements for IRDFF community and HPRL”, September 2017.

Review comment:

Entry Status:
Work in progress (as of SG-C review of May 2018)

Main references:
Please report any missing information to hprlinfo@oecd-nea.org

Theory/Evaluation

A. Trkov et al., IRDFF-II: A New Neutron Metrology Library, Nuclear Data Sheets 163 (2020) 1

Additional file attached:Simakov2017.pdf
Additional file attached:SPA_CE_Cf252U235.pdf

Request ID 82 Type of the request Special Purpose Quantity

Target Reaction and process Incident Energy Secondary energy or angle Target uncertainty Covariance

39-Y-89 (n,p) SIG 15 MeV-100 MeV 5-10 Y

Field Subfield Date Request created Date Request accepted Ongoing action

Dosimetry High-energy 06-OCT-17 06-OCT-17

Requester: Dr Stanislav SIMAKOV at KARLSRUHE, GER
Email: stanislav.simakov@partner.kit.edu

Project (context): IRDFF project

Accuracy:
5%-10%

Comment from requester:
The IRDFF project strives to evaluate, and eventually add to the library, high-threshold reactions with cross section plateaus located between 15/20 MeV and 100/150 MeV to meet the requirements of the accelerator-driven high-energy neutron sources. Note that it is important to know the cross section tail up to 100/150 MeV in order to allow the deconvolution of high-energy quasi-monoenergetic neutron source spectra.

References

[IAEA2017] IAEA CRP on Testing and Improving the International Reactor Dosimetry and Fusion File (IRDFF),
http://www-nds.iaea.org/IRDFFtest/.
[Simakov2017] S. Simakov, et al., “Proposals for new measurements for IRDFF community and HPRL”, September 2017.

Review comment:

Entry Status:
Work in progress (as of SG-C review of May 2018)

Main references:
Please report any missing information to hprlinfo@oecd-nea.org

Additional file attached:Simakov2017.pdf
Additional file attached:Y89(n,xn).pdf