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ASTM Selected Technical Papers
Reactor Dosimetry: 16th International Symposium
By
Mary Helen Sparks
Mary Helen Sparks
Symposium Chairperson and STP Editor
1
White Sands Missile Range
,
White Sands, NM,
US
Search for other works by this author on:
K. Russell DePriest
K. Russell DePriest
Symposium Chairperson and STP Editor
2
Sandia National Laboratories
,
Albuquerque, NM,
US
Search for other works by this author on:
David W. Vehar
David W. Vehar
Symposium Chairperson and STP Editor
3
Sandia National Laboratories
,
Albuquerque, NM,
US
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ISBN:
978-0-8031-7661-4
No. of Pages:
654
Publisher:
ASTM International
Publication date:
2018

A new scheme is proposed for calculating the covariance matrix of an a priori neutron flux spectrum using the Total Monte Carlo method. This covariance matrix can be used to improve the adjustment of calculated spectra to dosimetry measurements in a more physically realistic way. We have taken an example experiment performed at the High Flux Reactor to successfully demonstrate the application of this covariance matrix to spectrum adjustment procedures using a modified J1 unfolding algorithm.

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