IAEA.org | NDS Mission | About Us | Mirror: India
Databases » EXFOR ENDF CINDA IBANDL Medical PGAA NGAtlas RIPL FENDL IRDF-2002
 Participants
R.Capote
A.Trkov
V.G.Pronyaev
O.Cabellos
T.Kawano
P.Talou
O.Iwamoto
S.Hilaire
P.Romain
B.Morillon
E.Bauge
G.Noguere
D.Bernard
M.B.Chadwick
D.Neudecker
A.C.(Skip)Kahler
Y.Danon
M. Sin
 Send e-mail
Mail to all
 Links
Nuclear Data Services
Nuclear Data Section
NRDC Network
IAEA

CIELO Project (WPEC-SG40)

IAEA Data Development Project within the
International Pilot Project of the OECD/NEA

IAEA DDP Coordinators: R.Capote and A. Trkov
 (see IAEA CIELO follow-up project called INDEN)

Overall Objective

The overall objective of the CIELO Pilot Project (OECD/NEA WPEC SG-40) is to test the scheme of broad international collaboration to improve evaluated nuclear data files of the major nuclides: H-1, O-16, Fe-56, U-235, U-238 and Pu-239. The collaboration scheme is similar to that employed in the IAEA CRP on Evaluated Nuclear Data for the Th-U Fuel Cycle, which resulted in a very successful new evaluation of Th-232 and improvements to the evaluations for other relevant nuclides. Production of improved and validated evaluated nuclear data files is the main goal of the project.

IAEA CIELO transport files for U-235 and U-238, 01 Dec 2017

New files include latest covariance matrices with scaled PFNS uncertainties; the new P(nu) data for fission in MF6 and contain full correlations in the Legendre terms up to P2.
These files are proposed for the the ENDF/B-VIII.0.beta6 evaluation.
U-235 file (b6): U235 ENDF version "u235ib46o28t6DNcnu5ef0STzc" (ACE file)
U-238 file (b6): U238 ENDF version "u238ib58lrlFsfaST4q" (ACE file)

IAEA CIELO transport files for U-235 and U-238, 27 Sep 2017

Minor changes to the PFGS data, the PFNS and mu-bar covariances were made. The filenames of U-235 were not changed. The file on the link from 20 September was overwritten. Please, reload. The changes should not affect the U-235 ACE files.

U-235 file: u235ib46o28t6DNcnu5ef0STz3 ENDF file (ACE file )
are updates to the U-235 evaluation. It includes complete covariance matrices of the cross sections, nu-bar, mu-bar, PFNS(thermal) and PFNS(fast). This file is the updated proposal for the the ENDF/B-VIII.0.beta5 evaluation.

U-238 file: u238ib58lrlFsfaST4m ENDF file (ACE file )
are updates to the U-238 evaluation. It includes complete covariance matrices of the cross sections, nu-bar, mu-bar, PFNS(fast) and PFNS(high_energy). This file is the updated proposal for the the ENDF/B-VIII.0.beta5 evaluation.

IAEA CIELO iron files (in collaboration with BNL-NNDC)

Fe-56 (26FEB) Version: fe56ib20w compressed ENDF file and compressed ACE file
Fe-minor isotopes (28FEB) Version: e80b4 compressed ENDF files and compressed ACE files

Transport files including Neutron Standard reactions

B-10 (01MAR) Version: 10B_ENDF-VIII_b4 (as received from G. Hale on 1 March), consistent with STD2017
Au-197 (01MAR) Version: n-079_Au_197_STD17_ENDF (as received from A. Trkov on 1 March), consistent with STD2017
Li-6 (07FEB) Version: 6Li_ENDF-VIII_b4 (as received from G. Hale on 8 February), consistent with STD2017
H-1 (27JAN) Version: h1hale17 (as received from G. Hale on 26 January), consistent with STD2017 (comments need update)

Update to LANL Pu-239 (17-22) February 2017

Pu-239 was evaluated by Los Alamos National Laboratory, and is provided for convenience of validation. The file was made consistent with Standards_2017 above the resonance region. PFNS were missing for Einc = 17.5, 20 and 30 MeV in the file submitted on February 17.

Pu-239 Version: pu239e80b4_5_corDN (as submitted by D. Neudecker on 22 February) compressed ENDF file

Update to IAEA-CIELO as of 15 February 2017

The Standards were modified slightly (final release Standards 2017, February) and they affected benchmark performance. The U-238(n,f) cross section below the Standards region was defined on a finer mesh, so it was decided to adopt it (previously the ENDF/B-VI.8 was taken). The cross sections were made consistent with the new Standards in the "Standards" region, as well as in the region of "recommended" cross sections (pointwise or group-wise). This meant that U-235 and U-238 evaluations needed additional tuning. Small changes to nu-bar were made. The new PFNS of U-235 by D. Neudecker are included, as well as the fission gamma data from Stetcu (LANL).

Files available for downloading:
U-235 Version: u235_CIELO20170215 compressed ENDF file (internal IAEA designation u235ib36o28t6DNcnu5ef0STs), SUPERSEDED
U-238 Version: u238_CIELO20170215 compressed ENDF file (internal IAEA designation u238ib54lrlFsfaST4d)

Update to IAEA-CIELO as of 27 January 2017

Since the November release of the updated IAEA-CIELO files the Standards_2016 were finalised. These Standards were incorporated into the updated evaluations for the major uranium isotopes. A few additional small changes for U-235(n,f) and U-238(n,f) outside the standard region were deemed necessary.

  • U-235: (IAEA u235ib36o28p6DNcnu5ef0STi), SUPERSEDED
    nu-bar below 75 eV increased by 0.05% to compensate the loss of reactivity due to the new LANL hydrogen (STD 2016).
    U-235 resonance parameters were changed (ORNL RP file 28p) to decrease the slope of HST benchmarks vs ATLF.
  • Pu-240 (IAEA pu240e80b31c): Changed to improve MCF benchmarks and measured reaction rates (PROFIL).
    - Fission cross section updated: Replaced by Tovesson 2009 data from 5.7keV to 40 keV (URR), Weston 40keV - 190keV.
    - Capture cross section taken from ENDF/B-VII.0 (=ENDF-B/VI.8), with an additional 2% reduction above 42 keV to improve Pu240ng measured reaction rates (PROFIL).
    - Elastic cross section taken from ENDF/B-VII.0 (=ENDF-B/VI.8).
  • Pu-239 (IAEA pu239e80b420170112_STD3) : Changed to include GMA fitted fission in the URR.
    nubar restored to ENDF/B-VII.1 above 50 keV and slightly adjusted in the range 0.3-1 MeV by 0.1% to optimize fast criticality benchmarks, SUPERSEDED.
  • U-233: (IAEA designation u233j40e_updPFNS_f)
    - Taken from JENDL-4.0 with resonance widths of one bound level changed to match the Standards_2016.
    - Small changes to nu-bar to improve performance in fast criticality benchmarks.
    - Talou-Rising PFNS is used, except for incident thermal neutrons, where the B/VII.1 PFNS thermal spectrum was retained.

Files are available for downloading:

  • Pu-240 Version: pu240e80b31c compressed ENDF file (comments need update)
  • Pu-240 Corresponding compressed ACE file
  • Pu-239 Version: pu239e80b420170112_STD3 compressed ENDF file, SUPERSEDED
  • U-238 Version: u238_CIELO201612 compressed ENDF file (internal IAEA designation u238ib54lrlFsfaST2c) SUPERSEDED
  • U-235 Version: u235_CIELO201701 compressed ENDF file (internal IAEA designation u235ib36o28p6DNcnu5ef0STi) SUPERSEDED
  • U-233 Version: u233_CIELO201612 compressed ENDF file (internal IAEA designation u233j40e_updPFNS_f) (comments need update)
  • U-233 Corresponding compressed ACE file
  • Cu-63 Version: cu63e80b2 compressed ENDF file
  • Cu-63 Corresponding compressed ACE file
  • Cu-65 Version: cu65e80b2 compressed ENDF file
  • Cu-65 Corresponding compressed ACE file
  • Fe-56 Version: fe56ib19v compressed ENDF file
  • Fe-56 Corresponding compressed ACE file
  • Fe-54 Version: fe54nndc376 compressed ENDF file
  • Fe-54 Corresponding compressed ACE file
  • H-1 Version: h1hale17 (as received from G. Hale on 26 January) compressed ENDF file (comments need update)
  • H-1 Corresponding compressed ACE file
  • Au-197 based on ENDF/B-VII.1 cross sections in the fast energy range and resonance parameters evaluated at IRMM.

    The archive of data including processed ACE libraries and selected analysis reports are available from the tabs below.

    Note: The U-233, Cu-63,65, Au-197 and Fe-54,57,58 are not CIELO evaluations, but they affect benchmarking and have been included in the list.

    Available Materials


        Pu-239     U-238     U-235     Fe-56     O-16     H-1     Other     Validation    

    Data files available for downloading:

    #VersionDescriptionFormatLinkDocuments
    1CA.C.(Skip) KahlerENDFtxt [1]
    2239Pu_ENDF_LANL_23cENDF/B-VIII starter file provided by A.C.(Skip) KahlerENDFzip
    3 ACEzip
    4239Pu_ENDF_LANL_23c_nu8ENDF/B-VIII starter file provided by A.C.(Skip) Kahler with nu_bar (0.1eV--1MeV) from ENDF/B-VII.1ENDFzip
    5 ACEzip
    6pu239lanlmbc2ENDF/B-VIII beta2 file (mbc2) provided by A.C.(Skip) KahlerENDFzip02-Aug-2016
    7 ACEzip02-Aug-2016
    8pu239lanlmbc2vENDF/B-VIII beta2 file (mbc2) provided by A.C.(Skip) Kahler (LSSF=1)ENDFzip18-Aug-2016
    9 ACEzip18-Aug-2016
    10pu239e80b4_20170112pre-beta4 file provided by P.Talou (original name n-094_Pu_239-011217)ENDFzip18-Jan-2017
    11 ACEzip18-Jan-2017
    12pu239e80b4_20170112_STD3pre-beta4 file provided by P.Talou (original name n-094_Pu_239-011217) updated with the latest standards, nu-bar above 50 keV restored to ENDF/B-VII.1 and a small increase of nu-bar in the range 0.3-1.0 MeVENDFzip09-Feb-2017
    13 ACEzip09-Feb-2017
    14pu239e80b4_20170222pre-beta4 file provided by D. Neudecker updated with the latest standards, tweaked nubar and Chi-nu PFNS above 5 MeVENDFzip22-Feb-2017

    Relevant documents

    #DateAuthorTitleLink
    103/2015A.K. Kahler Content of MF1/MT451(Unpublished)
    Web page: by A. Trkov
 Last Updated: 11/22/2019 10:56:20