NESC0815 ALVIN (Abstract last modified 13-DEC-1982)
1.
NAME OR DESIGNATION OF PROGRAM - ALVIN 2.
COMPUTER FOR WHICH PROGRAM IS DESIGNED AND OTHER MACHINE VERSION PACKAGES AVAILABLE -
To request or retrieve programs click on the one of the active versions below.
A password and special authorization is required. Explanation of the status codes.
Machines used:
Package-ID Orig.Computer Test Computer
NESC0815/01 CDC 7600 CDC 7600
3.
DESCRIPTION OF PROBLEM OR FUNCTION - ALVIN analyzes the 4.
METHOD OF SOLUTION - Linear perturbation theory is used for the 5.
RESTRICTIONS ON THE COMPLEXITY OF THE PROBLEM - The DAFT2 6.
TYPICAL RUNNING TIME - About 1 minute is required, depending on 7.
UNUSUAL FEATURES OF THE PROGRAM - Data set consistency is 8.
RELATED AND AUXILIARY PROGRAMS - 9.
STATUS 10.
REFERENCES - 11.
MACHINE REQUIREMENTS - 55,000 (octal) words of small core memory 12.
PROGRAMMING LANGUAGE(S) USED - 13.
OPERATING SYSTEM UNDER WHICH PROGRAM IS EXECUTED - SCOPE. 14.
OTHER PROGRAMMING OR OPERATING INFORMATION OR RESTRICTIONS - ALVIN 15.
NAME AND ESTABLISHMENT OF AUTHORS - 16.
MATERIAL AVAILABLE - 17.
CATEGORIES - Keywords: COMPARATIVE EVALUATIONS, CROSS SECTIONS, DATA ANALYSIS, ENDF/B, LEAST SQUARE FIT, PERTURBATION THEORY, SENSITIVITY
Program-name Package-ID Status
ALVIN NESC0815/01 Tested
consistency of a set of differential and integral nuclear data,
adjusts the differential nuclear data to improve agreement with
integral observations, and identifies inconsistent data. ALVIN
also computes required sensitivities and related quantities such
as sensitivity profiles.
sensitivity calculations. Data consistency and adjustment
computations use least squares techniques.
consistency and adjustment subroutine treats fully or partially
correlated differential and integral parameters, but only as many
as the order of the largest matrix that can be inverted. The
DAFT3 consistency and adjustment subroutine treats arbitrarily
large differential data sets, but only if they are uncorrelated
with the integral data. Due to the current dimensions of some
arrays, maxima of 75 spatial mesh points, 41 groups, and 6th order
Legendre polynomials are allowed. This can be changed by
increasing the dimensions of the LCM arrays and the arrays in the
labeled COMMON block S1 and blank COMMON.
the size of the problem. NESC executed all three sample problems
in 20 CP seconds on a CDC7600.
analyzed. A special algorithm is used in DAFT3 to treat
arbitrarily large data sets.
NESC0815/01: 13-DEC-1982 Tested at NEADB
- D.R. Harris:
Consistency Among Differential Nuclear Data and Integral
Observations
Transactions of the American Nuclear Society, Vol.18, p.340, 1974.
NESC0815/01:
- D.R. Harris, W.A. Reupke and W.B. Wilson:
Consistency among Differential Nuclear Data and Integral
Observations: The ALVIN Code for Data Adjustement, for Sensitivity
Calculations, and for Identification of Inconsistent Data.
LA-5987 UC-32 and UC-34c (Dec. 1975)
(SCM) and 303,000 (octal) words of large core memory (LCM) are
required to execute the program.
NESC0815/01: FORTRAN-IV
makes use of the CDC7600 UPDATE program to modify the ALVIN code
for the third sample problem. Therefore, extra programming effort
will be necessary to implement this problem on machines without
the CDC UPDATE utility.
Contact D. R. Harris
Department of Nuclear Engineering
Rensselaer Polytechnic Institute
Troy, New York 12181
W. A. Reupke and W. B. Wilson
Los Alamos Scientific Laboratory
P. O. Box 1663
Los Alamos, New Mexico 87545
NESC0815/01:
NESC0815_01.003 ALVIN INFORMATION FILE 28 records
NESC0815_01.004 ALVIN JCL 49 records
NESC0815_01.005 ALVIN SOURCE PROGRAM (FORTRAN-4) 1674 records
NESC0815_01.006 ALVIN INPUT FOR TEST CASE 1 10 records
NESC0815_01.007 ALVIN INPUT FOR TEST CASE 2 10 records
NESC0815_01.008 ALVIN INPUT FOR TEST CASE 3 78 records
NESC0815_01.009 FORFLUX SYMBOLIC LIBRARY DATA 8796 records
NESC0815_01.010 ADJFLUX SYMBOLIC LIBRARY DATA 8796 records
NESC0815_01.011 CROSSEC SYMBOLIC LIBRARY DATA 2718 records
NESC0815_01.012 ALVIN OUTPUT OF TEST CASE 1 102 records
NESC0815_01.013 ALVIN OUTPUT OF TEST CASE 2 2359 records
NESC0815_01.014 ALVIN OUTPUT OF TEST CASE 3 1060 records
- O. Experimental Data Processing
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