Abstract
In a first part of this report, published as AE-195, an account was given of critical mass determinations and measurements of flux distribution and reaction ratios in the first assemblies of the fast zero power reactor FR0. This second part of the report deals with various investigations involving the measurement of reactivity. Control rod calibrations have been made using the positive period, the inverse multiplication, the rod drop and the pulsed source techniques, and show satisfactory agreement between the various methods. The reactivity worths of samples of different materials and different sizes have been measured at the core centre. Comparisons with perturbation calculations show that the regular and adjoint fluxes are well predicted in the central region of the core. The variation in the prompt neutron life-time with reactivity has been studied by means of the pulsed source and the Rossi-{alpha} techniques. Comparison with one region calculations reveals large discrepancies, indicating that this simple model is inadequate. Some investigations of streaming effects in an empty channel in the reactor and of interaction effects between channels have been made and are compared with theoretical estimates. Measurements of the reactivity worth of an air gap between the reactor halves and of the
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Citation Formats
Hellstrand, E, Andersson, T L, Brunfelter, B, Kockum, J, Londen, S O, and Tiren, L I.
Experimental Studies on Assemblies 1 and 2 of the Fast Reactor FR-0. Part 2.
Sweden: N. p.,
1965.
Web.
Hellstrand, E, Andersson, T L, Brunfelter, B, Kockum, J, Londen, S O, & Tiren, L I.
Experimental Studies on Assemblies 1 and 2 of the Fast Reactor FR-0. Part 2.
Sweden.
Hellstrand, E, Andersson, T L, Brunfelter, B, Kockum, J, Londen, S O, and Tiren, L I.
1965.
"Experimental Studies on Assemblies 1 and 2 of the Fast Reactor FR-0. Part 2."
Sweden.
@misc{etde_20949530,
title = {Experimental Studies on Assemblies 1 and 2 of the Fast Reactor FR-0. Part 2}
author = {Hellstrand, E, Andersson, T L, Brunfelter, B, Kockum, J, Londen, S O, and Tiren, L I}
abstractNote = {In a first part of this report, published as AE-195, an account was given of critical mass determinations and measurements of flux distribution and reaction ratios in the first assemblies of the fast zero power reactor FR0. This second part of the report deals with various investigations involving the measurement of reactivity. Control rod calibrations have been made using the positive period, the inverse multiplication, the rod drop and the pulsed source techniques, and show satisfactory agreement between the various methods. The reactivity worths of samples of different materials and different sizes have been measured at the core centre. Comparisons with perturbation calculations show that the regular and adjoint fluxes are well predicted in the central region of the core. The variation in the prompt neutron life-time with reactivity has been studied by means of the pulsed source and the Rossi-{alpha} techniques. Comparison with one region calculations reveals large discrepancies, indicating that this simple model is inadequate. Some investigations of streaming effects in an empty channel in the reactor and of interaction effects between channels have been made and are compared with theoretical estimates. Measurements of the reactivity worth of an air gap between the reactor halves and of the temperature coefficient are also described in the report. The work has been performed as a joint effort by AB Atomenergi and the Research Institute of National Defence.}
place = {Sweden}
year = {1965}
month = {Dec}
}
title = {Experimental Studies on Assemblies 1 and 2 of the Fast Reactor FR-0. Part 2}
author = {Hellstrand, E, Andersson, T L, Brunfelter, B, Kockum, J, Londen, S O, and Tiren, L I}
abstractNote = {In a first part of this report, published as AE-195, an account was given of critical mass determinations and measurements of flux distribution and reaction ratios in the first assemblies of the fast zero power reactor FR0. This second part of the report deals with various investigations involving the measurement of reactivity. Control rod calibrations have been made using the positive period, the inverse multiplication, the rod drop and the pulsed source techniques, and show satisfactory agreement between the various methods. The reactivity worths of samples of different materials and different sizes have been measured at the core centre. Comparisons with perturbation calculations show that the regular and adjoint fluxes are well predicted in the central region of the core. The variation in the prompt neutron life-time with reactivity has been studied by means of the pulsed source and the Rossi-{alpha} techniques. Comparison with one region calculations reveals large discrepancies, indicating that this simple model is inadequate. Some investigations of streaming effects in an empty channel in the reactor and of interaction effects between channels have been made and are compared with theoretical estimates. Measurements of the reactivity worth of an air gap between the reactor halves and of the temperature coefficient are also described in the report. The work has been performed as a joint effort by AB Atomenergi and the Research Institute of National Defence.}
place = {Sweden}
year = {1965}
month = {Dec}
}