The SARAF-LINAC Project for SARAF-PHASE 2

THPF005International audienceSNRC and CEA collaborate to the upgrade of theSARAF accelerator to 5 mA CW 40 MeV deuteron andproton beams (Phase 2). This paper presents the referencedesign of the SARAF-LINAC Project including a fourvane176 MHz RFQ, a MEBT and a superconducting linacmade of four five-meter cryomodules housing 26superconducting HWR cavities and 20 superconductingsolenoids. The first two identical cryomodules house lowbeta($\beta$opt = 0.091), 280 mm long (flange to flange), 176MHz HWR cavities, the two identical last cryomoduleshouse high-beta ($\beta$opt = 0.181), 410 mm long, 176 MHz,HWR cavities. The beam is focused with superconductingsolenoids located between cavities housing steering coils.A BPM is placed upstream each solenoid

Wettability Modification of Nanomaterials by Low-Energy Electron Flux

Controllable modification of surface free energy and related properties (wettability, hygroscopicity, agglomeration, etc.) of powders allows both understanding of fine physical mechanism acting on nanoparticle surfaces and improvement of their key characteristics in a number of nanotechnology applications. In this work, we report on the method we developed for electron-induced surface energy and modification of basic, related properties of powders of quite different physical origins such as diamond and ZnO. The applied technique has afforded gradual tuning of the surface free energy, resulting in a wide range of wettability modulation. In ZnO nanomaterial, the wettability has been strongly modified, while for the diamond particles identical electron treatment leads to a weak variation of the same property. Detailed investigation into electron-modified wettability properties has been performed by the use of capillary rise method using a few probing liquids. Basic thermodynamic approaches have been applied to calculations of components of solid–liquid interaction energy. We show that defect-free, low-energy electron treatment technique strongly varies elementary interface interactions and may be used for the development of new technology in the field of nanomaterials

Zastosowanie zwiększonego wydobycia ze złóż ropy naftowej

At present, oil can be ranked among the most important fuels and energy minerals. In the majority of cases, primary recovery moves, however, merely in the range of 30-40% of original oil in place (geological reserves). But with deposits containing very viscous oil, percent recovery is much lower, i.e. from 5 to 10%, and the use of primary methods brings about only little economic effect. It is the application of so-called secondary and tertiary methods that enables the effective exploitation of reserves. In the submitted study, we present some results obtained by laboratory experiments with using polymers and surface-active agents in the displacement of highly viscous oil from reservoir rocksObecnie ropa naftowa należy do najważniejszych paliw i źródeł energii. Jednakże w większości przypadków ze złóż pozyskiwanych jest około 30-40% ropy. W przypadku złóż ropy charakteryzującej się dużą lepkością procent ten jest dużo mniejszy, tj. od 5 do 10%, a zastosowanie metod pierwotnych przynosi niewielkie zyski ekonomiczne. Dopiero zastosowanie tzw. metod wtórnych lub trzeciorzędnych gwarantuje efektywne wykorzystanie złóż. W artykule przedstawiono wyniki badań laboratoryjnych nad wykorzystaniem polimerów i surfaktantów do zwiększenia produkcji ropy o dużej lepkośc

Comparison of four paper imaging techniques : β-radiography, electrography, light transmission, and soft X-radiography

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