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Title: Absolute reactivity calibration of accelerator-driven systems after RACE-T experiments

Abstract

The RACE-T experiments that were held in november 2005 in the ENEA-Casaccia research center near Rome allowed us to improve our knowledge of the experimental techniques for absolute reactivity calibration at either startup or shutdown phases of accelerator-driven systems. Various experimental techniques for assessing a subcritical level were inter-compared through three different subcritical configurations SC0, SC2 and SC3, about -0.5, -3 and -6 dollars, respectively. The area-ratio method based of the use of a pulsed neutron source appears as the most performing. When the reactivity estimate is expressed in dollar unit, the uncertainties obtained with the area-ratio method were less than 1% for any subcritical configuration. The sensitivity to measurement location was about slightly more than 1% and always less than 4%. Finally, it is noteworthy that the source jerk technique using a transient caused by the pulsed neutron source shutdown provides results in good agreement with those obtained from the area-ratio technique. (authors)

Authors:
 [1];  [2];  [1];  [3]
  1. Commissariat a l'Energie Atomique CEA, Centre de Cadarache, DEN/CAD/DER/SPEx/LPE, 13108 Saint Paul-Lez-Durance (France)
  2. Argonne National Laboratory, 9700 S. Cass Avenue, Argonne, IL 60439 (United States)
  3. Ente per le Nuove Tecnologie, L'Energia e l'Ambiente, Centro della Casaccia, Via Anguillarese, 301, 00060 Roma I (Italy)
Publication Date:
Research Org.:
American Nuclear Society, 555 North Kensington Avenue, La Grange Park, IL 60526 (United States)
OSTI Identifier:
22039571
Resource Type:
Conference
Resource Relation:
Conference: PHYSOR-2006: American Nuclear Society's Topical Meeting on Reactor Physics - Advances in Nuclear Analysis and Simulation, Vancouver, BC (Canada), 10-14 Sep 2006; Other Information: Country of input: France; 9 refs.
Country of Publication:
United States
Language:
English
Subject:
21 SPECIFIC NUCLEAR REACTORS AND ASSOCIATED PLANTS; 43 PARTICLE ACCELERATORS; ACCELERATOR DRIVEN TRANSMUTATION; CALIBRATION; COMPARATIVE EVALUATIONS; DOLLARS; EXPERIMENTAL DATA; ITALIAN ENEA; NEUTRON SOURCES; REACTIVITY; REACTOR SHUTDOWN; SENSITIVITY; SUBCRITICAL ASSEMBLIES

Citation Formats

Jammes, C. C., Imel, G. R., Geslot, B., and Rosa, R. Absolute reactivity calibration of accelerator-driven systems after RACE-T experiments. United States: N. p., 2006. Web.
Jammes, C. C., Imel, G. R., Geslot, B., & Rosa, R. Absolute reactivity calibration of accelerator-driven systems after RACE-T experiments. United States.
Jammes, C. C., Imel, G. R., Geslot, B., and Rosa, R. Sat . "Absolute reactivity calibration of accelerator-driven systems after RACE-T experiments". United States.
@article{osti_22039571,
title = {Absolute reactivity calibration of accelerator-driven systems after RACE-T experiments},
author = {Jammes, C. C. and Imel, G. R. and Geslot, B. and Rosa, R.},
abstractNote = {The RACE-T experiments that were held in november 2005 in the ENEA-Casaccia research center near Rome allowed us to improve our knowledge of the experimental techniques for absolute reactivity calibration at either startup or shutdown phases of accelerator-driven systems. Various experimental techniques for assessing a subcritical level were inter-compared through three different subcritical configurations SC0, SC2 and SC3, about -0.5, -3 and -6 dollars, respectively. The area-ratio method based of the use of a pulsed neutron source appears as the most performing. When the reactivity estimate is expressed in dollar unit, the uncertainties obtained with the area-ratio method were less than 1% for any subcritical configuration. The sensitivity to measurement location was about slightly more than 1% and always less than 4%. Finally, it is noteworthy that the source jerk technique using a transient caused by the pulsed neutron source shutdown provides results in good agreement with those obtained from the area-ratio technique. (authors)},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sat Jul 01 00:00:00 EDT 2006},
month = {Sat Jul 01 00:00:00 EDT 2006}
}

Conference:
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