Dynamic Parameter Fitting of the Zed-2 Reactor Core Using a Neutron Flux Perturbation Experiment

Li, Liqian; Lee, Nathan; Ende, B.M. van der; Chow, J.C.; Atfield, J.E.; Zeller, M.; Anghel, Vini; Sur, B.

doi:10.12943/cnr.2016.00017

Cited by 1 publication

(4 citation statements)

References 7 publications

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“…Advances in code development for reactor physics simulations may also made the experimental modulation studies less attractive in inferring the core parameters. Starting from 2000, several modulation studies with a focus on the determination of kinetic parameters, especially for delayed neutron parameters, are found in the literature [13][14][15][52][53][54]. The kinetic parameter evaluations in major nuclear data libraries rely essentially on experimental data, and the impact of undocumented uncertainty and experimental conditions of various experiments are difficult to quantify.…”

Section: After 1980mentioning

confidence: 99%

“…The driving system of linear oscillator has its capacity reduced for high frequency motion due to structural vibration and limits in the transmission system. Therefore, discontinuous pseudo-random binary motion [15,38,51,75,76] is preferred for the high flexibility it offers to the experimental setup. This kind of motion is driven by a binary sequence generated with a deterministic algorithm and has a similar statistical behavior to true stochastic sequence.…”

Section: Linear Modulatormentioning

confidence: 99%

“…Nonetheless, the method is being actively used and its new possible applications have been suggested [9]. To the authors' knowledge, multiple modulators have been built, tested [10,11] and operated [12][13][14][15][16] in the last 10 years.…”

Section: Introductionmentioning

confidence: 99%

“…Fig.5. Linear self-shielded reactivity modulator in ZED-2 reactor: a piston (right) and sleeve (left) coupling[15].…”

mentioning

confidence: 99%

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Review of kinetic modulation experiments in low power nuclear reactors

Jiang

Geslot

Lamirand

et al. 2020

EPJ Nuclear Sci. Technol.

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The safety improvement of nuclear reactors requires continuous efforts in understanding the fundamental physical quantities related to the fission process. In neutronic models, the reactor dynamics is covered by the kinetic parameters to characterize the temporal behavior of the neutron population subject to perturbations. The reactor transfer function is a frequency domain analogy of this temporal description. It can be measured experimentally through transfer function analysis via noise analysis or kinetic modulation, for the study of reactor stability and kinetic parameters. This paper summarizes the experimental measurements of reactor transfer function through kinetic modulation. Extensive work have been conducted experimentally, starting from the beginning of reactor physics research. An overview is given regarding various experimental designs and conducted analyses. The concepts of the modulation system are also discussed. The current work is limited to online contents and internal archives of CEA Cadarache due to difficulties in accessing references traced back to 1950s.

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