DLC-0188 ZZ-SKYDATA-KSU.
ZZ SKYSDATA-KSU, Neutron and Gamma Skyshine Responses
NAME OR DESIGNATION OF PROGRAM, COMPUTER, HISTORICAL BACKGROUND AND INFORMATION, SOURCE AND SCOPE OF DATA, RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM, TYPICAL RUNNING TIME, UNUSUAL FEATURES OF THE PROGRAM, RELATED AND AUXILIARY PROGRAMS, STATUS, REFERENCES, MACHINE REQUIREMENTS, LANGUAGE, OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED, OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS, NAME AND ESTABLISHMENT OF AUTHORS, MATERIAL, CATEGORIES
[ top ]
[ top ]
To submit a request, click below on the link of the version you wish to order.
Only liaison officers are authorised to submit online requests. Rules for requesters are
available here.
| Program name | Package id | Status | Status date |
|---|---|---|---|
| ZZ-SKYDATA-KSU | DLC-0188/01 | Tested | 24-NOV-2000 |
Machines used:
| Package ID | Orig. computer | Test computer |
|---|---|---|
| DLC-0188/01 | IBM PC | PC Pentium III 500,Linux-based PC,IBM RISC6000 WS |
[ top ]
3. HISTORICAL BACKGROUND AND INFORMATION
The integral line-beam skyshine method is an effective and efficient method for performing both gamma-ray and neutron skyshine calculations for sources that are small compared to the source-to-detector distance. Critical to this method is the availability of skyshine response functions which are usually approximated by an empirical formula whose parameters are obtained by fits to accurate evaluations of the response functions. This library provides revised parameters for approximations of line-beam and conical-beam skyshine response functions for both gamma-ray and neutron sources. These new compilations allow the response functions to be evaluated with greater accuracy over greater energy ranges and over greater source-to-detector distances than do previous approximations. Moreover, the neutron and secondary-photon response functions are expressed for the first time in modern dosimetric units. Finally, approximations are provided to allow correction of the neutron conical beam response functions for the effect of the air-ground interface.
The data in this library are intended for use in calculations of skyshine doses from point gamma-ray and neutron sources with the integral line-beam method. The CCC-0646/SKYSHINE-KSU package includes these data and a series of such calculational codes (SKYDOSE, SKYNEUT, McSKY) that can directly use these data for simple geometries. These data can be used in specialized codes for sources with more complex geometries or to estimate the effect of the air-ground interface.
The integral line-beam skyshine method is an effective and efficient method for performing both gamma-ray and neutron skyshine calculations for sources that are small compared to the source-to-detector distance. Critical to this method is the availability of skyshine response functions which are usually approximated by an empirical formula whose parameters are obtained by fits to accurate evaluations of the response functions. This library provides revised parameters for approximations of line-beam and conical-beam skyshine response functions for both gamma-ray and neutron sources. These new compilations allow the response functions to be evaluated with greater accuracy over greater energy ranges and over greater source-to-detector distances than do previous approximations. Moreover, the neutron and secondary-photon response functions are expressed for the first time in modern dosimetric units. Finally, approximations are provided to allow correction of the neutron conical beam response functions for the effect of the air-ground interface.
The data in this library are intended for use in calculations of skyshine doses from point gamma-ray and neutron sources with the integral line-beam method. The CCC-0646/SKYSHINE-KSU package includes these data and a series of such calculational codes (SKYDOSE, SKYNEUT, McSKY) that can directly use these data for simple geometries. These data can be used in specialized codes for sources with more complex geometries or to estimate the effect of the air-ground interface.
[ top ]
4. SOURCE AND SCOPE OF DATA
Data in this library have been obtained by fitting the response function approximations to values of the response functions calculated, for the most part, by the MCNP code. Line-beam data are presented for gamma-ray and neutron sources, the latter including neutron and secondary-photon components. Conical-beam data are also provided for neutron sources with azimuthal symmetry. Source gamma rays may have energies between 0.02 and 100 MeV, and source neutrons may have energies between 0.01 and 14 MeV. The maximum source-to-detector distance is 3000 m for gamma photons below 10 MeV and 1500 m for photons between 10 and 100 MeV. Data for neutron response functions are valid to 2500 m. Skyshine doses for photon sources are expressed in air-absorbed rad while doses for neutron sources are in dose equivalent. Specifically, the following three dose equivalents (Sv/neutron) are used: (1) the effective dose equivalent for AP irradiation of an anthropomorphic phantom, (2) the dose equivalent at 10 mm into the ICRU sphere for isotropic (ISO) irradiation, and (3) the dose equivalent on the principal axis at 10 mm depth for irradiation of the ICRU sphere by a plane parallel beam (PAR). Fluence-to-dose conversion factors are from ICRP Report 51, but do *not* include the factor of 2 increase in the neutron quality factor recommended at the 1985 Paris meeting of the ICRP.
Data in this library have been obtained by fitting the response function approximations to values of the response functions calculated, for the most part, by the MCNP code. Line-beam data are presented for gamma-ray and neutron sources, the latter including neutron and secondary-photon components. Conical-beam data are also provided for neutron sources with azimuthal symmetry. Source gamma rays may have energies between 0.02 and 100 MeV, and source neutrons may have energies between 0.01 and 14 MeV. The maximum source-to-detector distance is 3000 m for gamma photons below 10 MeV and 1500 m for photons between 10 and 100 MeV. Data for neutron response functions are valid to 2500 m. Skyshine doses for photon sources are expressed in air-absorbed rad while doses for neutron sources are in dose equivalent. Specifically, the following three dose equivalents (Sv/neutron) are used: (1) the effective dose equivalent for AP irradiation of an anthropomorphic phantom, (2) the dose equivalent at 10 mm into the ICRU sphere for isotropic (ISO) irradiation, and (3) the dose equivalent on the principal axis at 10 mm depth for irradiation of the ICRU sphere by a plane parallel beam (PAR). Fluence-to-dose conversion factors are from ICRP Report 51, but do *not* include the factor of 2 increase in the neutron quality factor recommended at the 1985 Paris meeting of the ICRP.
[ top ]
[ top ]
[ top ]
[ top ]
[ top ]
10. REFERENCES
- J.K. Shultis et al.:
Approximate Beam Response Functions for Gamma-Ray and Neutron
Skyshine Analysis
EES Report 217, Engineering Experiment Station, Kansas State
University, Manhattan, Kansas, 1995
- J.S. Shultis et al.:
Extensions to the Integral Line-Beam Method for Gamma-Ray Skyshine Analyses
Report SAND94-2019, Sandia National Laboratory, Albuquerque,
New Mexico, 1995
- A.A. Gui et al.:
Response Functions for Neutron Skyshine Analysis, submitted to
Nucl. Sci. Eng., 1995
- J.K. Shultis et al.:
Approximate Beam Response Functions for Gamma-Ray and Neutron
Skyshine Analysis
EES Report 217, Engineering Experiment Station, Kansas State
University, Manhattan, Kansas, 1995
- J.S. Shultis et al.:
Extensions to the Integral Line-Beam Method for Gamma-Ray Skyshine Analyses
Report SAND94-2019, Sandia National Laboratory, Albuquerque,
New Mexico, 1995
- A.A. Gui et al.:
Response Functions for Neutron Skyshine Analysis, submitted to
Nucl. Sci. Eng., 1995
DLC-0188/01, included references:
- J.K. Shultis et al.:Approximate Beam Response Functions for Gamma-Ray and Neutron
Skyshine Analysis
KSU Report 271 (June 1995)
[ top ]
[ top ]
[ top ]
[ top ]
[ top ]
DLC-0188/01
miscellaneous mag tapeREADME.DOC Information file MISTPtest-case data mag tapeGCFN1.DAT Param. for neutron GCF_n1 DATTP
test-case data mag tapeGCFN1.TBL Param. for neutron GCF_n1 DATTP
test-case data mag tapeGCFN2.DAT Param. for neutron GCF_n2 DATTP
test-case data mag tapeGCFN2.TBL Param. for neutron GCF_n2 DATTP
test-case data mag tapeGCFSG.DAT Param. for secondary gamma GCF_p DATTP
test-case data mag tapeGCFSG.TBL Param. for secondary gamma GCF_p DATTP
test-case data mag tapeLOWGAM Gamma LBRF E=0.02 to 15 MeV DATTP
test-case data mag tapeHIGHGAM Gamma LBRF E=20 to 100 MeV DATTP
test-case data mag tapeLBNEDE.DAT n LBRF EDE anthropomorph phantomDATTP
test-case data mag tapeLBNEDE.TBL n LBRF EDE anthropomorph phantomDATTP
test-case data mag tapeLBNDEP.DAT n LBRF dose - beam on ICRU sph. DATTP
test-case data mag tapeLBNDEP.TBL n LBRF dose - beam on ICRU sph. DATTP
test-case data mag tapeLBNDEI.DAT n LBRF DE 10mm in the ICRU sph. DATTP
test-case data mag tapeLBNDEI.TBL n LBRF DE 10mm in the ICRU sph. DATTP
test-case data mag tapeLBGEDE.DAT sec-gamma LBRF EDE anthrop. ph. DATTP
test-case data mag tapeLBGEDE.TBL sec-gamma LBRF EDE anthrop. ph. DATTP
test-case data mag tapeLBGDEP.DAT sec-gamma LBRF DE beam ICRU sph.DATTP
test-case data mag tapeLBGDEP.TBL sec-gamma LBRF DE beam ICRU sph.DATTP
test-case data mag tapeLBGDEI.DAT sec-gamma LBRF DE 10mm ICRU sph.DATTP
test-case data mag tapeLBGDEI.TBL sec-gamma LBRF DE 10mm ICRU sph.DATTP
test-case data mag tapeCBNEDE.DAT n CBRF EDE anthropomorph phantomDATTP
test-case data mag tapeCBNEDE.TBL n CBRF EDE anthropomorph phantomDATTP
test-case data mag tapeCBNDEP.DAT n CBRF dose - beam on ICRU sph. DATTP
test-case data mag tapeCBNDEP.TBL n CBRF dose - beam on ICRU sph. DATTP
test-case data mag tapeCBNDEI.DAT n CBRF DE 10mm in the ICRU sph. DATTP
test-case data mag tapeCBNDEI.TBL n CBRF DE 10mm in the ICRU sph. DATTP
test-case data mag tapeCBGEDE.DAT sec-gamma CBRF EDE anthrop. ph. DATTP
test-case data mag tapeCBGEDE.TBL sec-gamma CBRF EDE anthrop. ph. DATTP
test-case data mag tapeCBGDEP.DAT sec-gamma CBRF DE beam ICRU sph.DATTP
test-case data mag tapeCBGDEP.TBL sec-gamma CBRF DE beam ICRU sph.DATTP
test-case data mag tapeCBGDEI.DAT sec-gamma CBRF DE 10mm ICRU sph.DATTP
test-case data mag tapeCBGDEI.TBL sec-gamma CBRF DE 10mm ICRU sph.DATTP
report KSU Report 271 (June 1995) REPPT
Keywords: air scattering, data library, gamma radiation, neutrons, response functions.