New neutron detector based on micromegas technology for ADS projects

Andriamonje, S.; Andriamonje, Grégory; Aune, S.; Ban, G.; Bréaud, S.; Blandin, Christophe; Ferrer, E.; Geslot, B.; Giganon, A.; Giomataris, I.; Jammes, C.; Kadi, Y.; Laborie, Philippe; Lecolley, Jean François; Pancin, J.; Riallot, M.; Rosa, Roberto De; Sarchiapone, L.; Steckmeyer, J.C.; Tillier, J.

doi:10.1016/j.nima.2006.02.048

Cited by 22 publications

(7 citation statements)

References 5 publications

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“…The Dunbar correction adjusts the pressure by a factor 0 , moving the curve to the right for elevated temperatures. Thus the Dunbar correction is simply the application of equations (2,3), while the Peek correction is more empirical in nature. The Dunbar correction may then be thought of as using the density instead of the pressure in the ordinate for the Paschen curve.…”

Section: A Temperature Correctionsmentioning

confidence: 99%

“…The current and possible future construction of the ITER and DEMO fusion reactors, as well as the construction of sodiumcooled IV th generation nuclear reactors will necessitate the use of high temperature fission chambers [1] (HTFC) to detect neutrons in the high temperature zones of these installations [2][3][4][5][6][7][8][9][10]. Multiple uses are envisaged such as reactor power control and fuel cladding failure detection [11][12].To operate in-core, the HTFC will have to operate under high irradiation, up to 10 10 n/cm².s and to withstand the high operating temperatures, up to 650°C, of the sodium-cooled fast reactors and, up to 1000°C, of the fusion reactors.…”

Section: Introductionmentioning

confidence: 99%

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Paschen’s Law in Extreme Pressure and Temperature Conditions

Galli

Hamrita

Jammes

et al. 2019

IEEE Trans. Plasma Sci.

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Paschen's law gives the inception voltage for an electrical discharge as a function of the product of gas pressure and the gap distance between two infinite planar electrodes. It is known that deviations from Paschen's law occur when temperature is increased. Historically two theoretical corrections, the Peek and Dumbar corrections, are proposed to predict the deviation from Paschen's law by increasing temperature. To carry out an experimental investigation on the deviation from Paschen's law by increasing temperature a customized system was designed which can operate at temperatures up to 400°C and at pressure up to 1MPa, calculated at room temperature; with an inter-electrode distance between 100µm and 6.6mm and with an error on the inter-electrode distance measurement of 20µm. In this article, firstly, the results from the experimental investigation on the deviation from Paschen's law at temperature up to 400°C are presented. The results are then compared with theoretical corrections, and finally a theory to explain the results is proposed and discussed.

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Section: A Temperature Correctionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Paschen’s Law in Extreme Pressure and Temperature Conditions

Galli

Hamrita

Jammes

et al. 2019

IEEE Trans. Plasma Sci.

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“…This new detector, named Piccolo for its small size, was designed in 2004 for the TRADE project and it has already been tested with a neutron generator in 2005 [10].…”

Section: The Neutron Detector 'Piccolo'mentioning

confidence: 99%

Piccolo Micromegas: First in-core measurements in a nuclear reactor

Pancin

Andriamonje

Aune

et al. 2008

Nuclear Instruments and Methods in Physics Research Section A:

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An Accelerator Driven System (ADS) consists in the coupling of an accelerator with a nuclear reactor. Such systems will need neutron detectors working in a wide energy range and insensitive to X-and γ-rays. Micromegas technology has been proposed to achieve this goal. The ability of Micromegas to detect neutrons over a wide energy range has already been demonstrated and this detector is, under certain conditions, insensitive to γ-rays. A new Micromegas neutron detector called Piccolo Micromegas has been designed to get integrated neutron fluxes on different energy domains. For the first time, Piccolo Micromegas has been placed in the core of a nuclear reactor at Casaccia in Italy. The configuration of the detector will be presented as well as its functioning and the reasons of its insensitivity to γ-rays.The results of the operation of the detector will also be shown for low reactor power to high reactor power ans some improvements will be suggested.

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“…There are many applications of the Micromegas concept in the neutron detection domain, which include neutron beam diagnostics [99], inertial fusion experiments [100], thermal neutron tomography [101] and a novel compact sealed Picollo-Micromegas detector designed to provide in-core measurements of the neutron flux and energy (from thermal to several MeV) in nuclear reactors [102]. Neutrons can be converted into charged particles to detect ionization in Micromegas by two means: either using the detector gas filling or a target with appropriate deposition in its entrance window.…”

Section: Micromegas For Neutron Detection and Low Background Experimentsmentioning

confidence: 99%

New developments and future perspectives of gaseous detectors

Titov

2007

Nuclear Instruments and Methods in Physics Research Section A:

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Gaseous detectors are fundamental components of all present and planned high energy physics experiments. Over the past decade two representatives (GEM, Micromegas) of the Micro-Pattern Gas Detector (MPGD) concept have become increasingly important; the high radiation resistance and excellent spatial and time resolution make them an invaluable tool to confront future detector challenges at the next generation of colliders. Novel structures where GEM and Micromegas are directly coupled to the CMOS multi-pixel readout represent an exciting field and allow to reconstruct fine-granularity, two-dimensional images of physics events. Originally developed for the high energy physics, MPGD applications have expanded to astrophysics, neutrino physics, neutron detection and medical imaging.

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New neutron detector based on micromegas technology for ADS projects

Cited by 22 publications

References 5 publications

Paschen’s Law in Extreme Pressure and Temperature Conditions

Paschen’s Law in Extreme Pressure and Temperature Conditions

Piccolo Micromegas: First in-core measurements in a nuclear reactor

New developments and future perspectives of gaseous detectors

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