San Carlos de Bariloche, Argentina
San Carlos de Bariloche, Argentina

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This disclosure presents a new device for the removal and separation of isotopes of Helium in Compressed Natural Gas, based on a system with two cascades operating together to increase, in the first cascade, the concentration of Helium in the cascade head, and at the tail of the same cascade, Helium-depleted Compressed Natural Gas is discharged, while the second cascade, fed from the head of the first cascade, allows separation of the isotopes of Helium-3 and Helium-4, discharging Helium-3 through the head of the second cascade, while Helium-4 is discharged through the tail of the second cascade, with a configuration that is efficient from the energy consumption standpoint, while using a small number of rotating parts.


Alessi M.,INVAP SE | Focke P.,Bariloche Atomic Center | Otranto S.,National University of the South
Journal of Physics: Conference Series | Year: 2015

Electron capture reactions for 3He2+ collisions on He at impact energies in the range 40 keV-300 keV have been studied using the Cold Target Recoil-Ion Momentum Spectroscopy setup which has recently became operational at the Centro Atomico Bariloche. State-selective charge exchange cross sections were obtained and in this work we present recoil-ion transverse momentum distributions. For targets with residual thermal motion, we show that the implementation of a back-projection algorithm based on the transverse momentum distribution component along a direction perpendicular to the jet direction provides results in agreement with those obtained by using previously cooled targets. Present results nicely fit the gaps in the datasets already published by other laboratories and are found to be in good agreement with classical trajectory Monte Carlo simulations. © Published under licence by IOP Publishing Ltd.


Tempone S.,INVAP S.E. | Franceschini M.,INVAP S.E. | Dvorkin E.N.,SIM Inc
PANACM 2015 - 1st Pan-American Congress on Computational Mechanics, in conjunction with the 11th Argentine Congress on Computational Mechanics, MECOM 2015 | Year: 2015

The objective of this paper is to discuss the development of the computational structural models that were used to check the structural strength and orbital alignment of the communications spacecraft ARSAT-1, designed and built by INVAP.


Toscano R.G.,SIM Inc | Goldschmit M.B.,SIM Inc | Tempone S.,INVAP S.E. | Dvorkin E.N.,SIM Inc
PANACM 2015 - 1st Pan-American Congress on Computational Mechanics, in conjunction with the 11th Argentine Congress on Computational Mechanics, MECOM 2015 | Year: 2015

The scientific-technological development is essential for the sustained growth of our regions; the production of quality goods with high added value is an important step forward when compared with the production of raw materials. Computational Mechanics is an essential tool for the development of new technologies and for the optimization of the existing ones [1]. The industry faces technological problems increasingly more complex, and the numerical simulation of those technological problems induces scientists to computational developments of greater complexity. Since technological decisions are reached based on the results provided by numerical models, it is evident that these models have to be highly reliable. Therefore, it is essential that sophisticated modeling techniques are used; that highly qualified engineers develop models and that the results are validated experimentally using industrial or laboratory determinations [2]. The examples used to illustrate this article are taken from real applications developed for industry: the structural verification of the communications satellite ARSAT-1 and the modeling of rock fracturing processes.


Soba A.,Comision Nacional de la Energia Atomica | Denis A.,Comision Nacional de la Energia Atomica | Romero L.,Comision Nacional de la Energia Atomica | Villarino E.,INVAP SE | Sardella F.,INVAP SE
Journal of Nuclear Materials | Year: 2013

A group of subroutines, designed to extend the application range of the fuel performance code DIONISIO to high burn up, has recently been included in the code. The new calculation tools, which are tuned for UO2 fuels in LWR conditions, predict the radial distribution of power density, burnup, and concentration of diverse nuclides within the pellet. The balance equations of all the isotopes involved in the fission process are solved in a simplified manner, and the one-group effective cross sections of all of them are obtained as functions of the radial position in the pellet, burnup, and enrichment in 235U. In this work, the subroutines are described and the results of the simulations performed with DIONISIO are presented. The good agreement with the data provided in the FUMEX II/III NEA data bank can be easily recognized. © 2012 Elsevier Ltd. All rights reserved.


Diez R.J.,INVAP S.E. | Boeri A.M.,INVAP S.E. | Ochoa C.,INVAP S.E.
Proceedings of the International Astronautical Congress, IAC | Year: 2012

Earth Observation Sensors are usually characterized by a high data throughput and high volume data storage. Science data is stored in a Solid State Recorder (SSR) before being downloaded to ground through the data downlink system. A modular and robust general purpose Solid State Recorder for earth observation sensors is presented in this paper. The design includes several mechanisms in order to mitigate the radiation effects on electronic components, such as Reed Solomon coding, data interleaving, overcurrent protections, cluster health monitoring and partial modules shut down. The Engineering Model is already finished and has been successfully tested and the Flight Model is being manufactured. Copyright © (2012) by the International Astronautical Federation.


It is a system and method for the monitoring of the illicit traffic of fissile materials that can be used for the construction of nuclear bombs or not fissile that can be used for the construction of radiological dispersion devices; characterized by reducing the rate of spurious detection and increase the probability of detection compared with equivalent devices of the prior art. Some of its embodiments include the use of a radiation detector/telemeter ensemble with manual or automatic pointing and an ensemble of radiation detector/camera with an automatic object tracker along with data acquisition and processing electronics; which allow the calculation of the correlation between the characteristic profile produced by the MO and a predicted reference profile. The detection electronics includes a gamma spectrometer and processing electronics for compensating for the shadow shielding effects. One or more radiation detectors are included together with their correspondent high voltage power supplies and signal conditioning and amplification electronics.


Trademark
Invap S.E. | Date: 2016-10-20

hygrometers; automatic driving devices for vehicles (autopilots); electricity conduits; electronic signal transmitters; issuers (telecommunications); electric transformers; Scientific, nautical, surveying, weighing, measuring, signaling, checking (supervision), life saving and teaching; apparatus and instruments for conducting, switching, transforming, accumulating, regulating or controlling electricity. lenses for surgical implantation. nuclear reactors; installations for processing nuclear fuel and moderators. vehicles; apparatus for land, air and water vehicles; aerospace equipment; machines and devices for aircraft; amphibious aircraft; unmanned aircraft; space vehicles; aircraft. construction services; repair services; installation services. telecommunications. chemical treatment of different organic and non-organic products, among other mechanical transformation. education services; training services; entertainment services; sporting and cultural activities. scientific and technological services and research and design services relating thereto; industrial analysis and research services.


Ferraro D.,INVAP S.E. | Villarino E.,INVAP S.E.
Science and Technology of Nuclear Installations | Year: 2011

Monte Carlo neutron transport codes are usually used to perform criticality calculations and to solve shielding problems due to their capability to model complex systems without major approximations. However, these codes demand high computational resources. The improvement in computer capabilities leads to several new applications of Monte Carlo neutron transport codes. An interesting one is to use this method to perform cell-level fuel assembly calculations in order to obtain few group constants to be used on core calculations. In the present work the VTT recently developed Serpent v.1.1.7 cell-oriented neutronic calculation code is used to perform cell calculations of a theoretical BWR lattice benchmark with burnable poisons, and the main results are compared to reported ones and with calculations performed with Condor v.2.61, the INVAP's neutronic collision probability cell code. © 2011 Diego Ferraro and Eduardo Villarino.


Mochi I.,INVAP SE
Science and Technology of Nuclear Installations | Year: 2011

Since its origins in 1976, INVAP has been on continuous development of the calculation system used for design and optimization of nuclear reactors. The calculation codes have been polished and enhanced with new capabilities as they were needed or useful for the new challenges that the market imposed. The actual state of the code packages enables INVAP to design nuclear installations with complex geometries using a set of easy-to-use input files that minimize user errors due to confusion or misinterpretation. A set of intuitive graphic postprocessors have also been developed providing a fast and complete visualization tool for the parameters obtained in the calculations. The capabilities and general characteristics of this deterministic software package are presented throughout the paper including several examples of its recent application. Copyright © 2011 Ignacio Mochi.

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