Conference
Innovative hybrid pile oscillator technique in the Minerve reactor open loop vs. closed loop
| العنوان: | Innovative hybrid pile oscillator technique in the Minerve reactor open loop vs. closed loop |
|---|---|
| المؤلفون: | Geslot, B., Gruel, A., Breaud, S., Leconte, P., Blaise, P. |
| المساهمون: | CEA-Direction des Energies (ex-Direction de l'Energie Nucléaire) (CEA-DES (ex-DEN)), Commissariat à l'énergie atomique et aux énergies alternatives (CEA) |
| المصدر: | ANIMMA ; https://hal.science/hal-02417737 ; ANIMMA, Jun 2017, Liege, Belgium |
| بيانات النشر: | HAL CCSD ANIMMA |
| سنة النشر: | 2017 |
| المجموعة: | HAL-CEA (Commissariat à l'énergie atomique et aux énergies alternatives) |
| مصطلحات موضوعية: | Neutron cross section measurement, hybrid pile oscillator, minerve experimental reactor, [PHYS.NEXP]Physics [physics]/Nuclear Experiment [nucl-ex], [PHYS.NUCL]Physics [physics]/Nuclear Theory [nucl-th] |
| جغرافية الموضوع: | Liege, Belgium |
| الوصف: | International audience ; Pile oscillator techniques are powerful methods to measure small reactivity worth of isotopes of interest for nuclear data improvement. This kind of experiments has long been implemented in the Mineve experimental reactor, operated by CEA Cadarache. A hybrid technique, mixing reactivity worth estimation and measurement of small changes around test samples is presented here. It was made possible after the development of high sensitivity miniature fission chambers introduced next to the irradiation channel. A test campaign, called MAESTRO-SL, took place in 2015. Its objective was to assess the feasibility of the hybrid method and investigate the possibility to separate mixed neutron effects, such as fission/capture or scattering/capture. Experimental results are presented and discussed in this paper, which focus on comparing two measurements setups, one using a power control system (closed loop) and another one where the power is free to drift (open loop). First, it is demonstrated that open loop is equivalent to closed loop. Uncertainty management and methods reproducibility are discussed. Second, results show that measuring the flux depression around oscillated samples provides valuable information regarding partial neutron cross sections. The technique is found to be very sensitive to the capture cross section at the expense of scattering, making it very useful to measure small capture effects of highly scattering samples. |
| نوع الوثيقة: | conference object |
| اللغة: | English |
| Relation: | hal-02417737; https://hal.science/hal-02417737; https://hal.science/hal-02417737/document; https://hal.science/hal-02417737/file/201700002240.pdf |
| الاتاحة: | https://hal.science/hal-02417737 https://hal.science/hal-02417737/document https://hal.science/hal-02417737/file/201700002240.pdf |
| Rights: | info:eu-repo/semantics/OpenAccess |
| رقم الانضمام: | edsbas.376B7DC1 |
| قاعدة البيانات: | BASE |
| الوصف غير متاح. |