Dr
Leonello Servoli
(PG)
11/29/11, 2:30โฏPM
Posters
Interventional Radiology (IR) is a subspecialty of radiology comprehensive of all minimally invasive diagnostic and therapeutic procedures performed using radiological devices to obtain image guidance. The interventional procedures are potentially harmful for interventional radiologists and medical staff due to the X-ray diffusion by the patient's body. The characteristic energy range of the...
Dr
Dariush Hampai
(LNF)
11/29/11, 2:31โฏPM
Posters
One branch of X-ray imaging studies at X Lab Frascati has been dedicated to the design of novel optics-detector solutions aiming in creating a compact laboratory X-ray microscopy apparatus. Based on our experience in the use of both capillary/polycapillary optical systems and LiF imaging detectors we have recently tested a new combination of these techniques. The potential of the optics both...
Dr
Domenico Doria
(Queens University of Belfast, Belfast, UK)
11/29/11, 2:32โฏPM
Posters
A wide range of detectors has been developed to reveal the different existing types of radiation. Among those detectors, scintillators are a broadly used option. The Image Plate (IP) is a type of scintillator and is made of phosphors with phosphorescent properties which can release the store energy in a long-lasting de-excitation (typically few hours). The energy stored in the IP can be...
Ms
Darya Ivanova
(Alfvรฉn Laboratory, KTH, Association EURATOM-VR, 100 44 Stockholm, Sweden)
11/29/11, 2:33โฏPM
Posters
Metallic mirrors will be essential components of all optical systems for plasma diagnosis in a reactor-class device. First Mirror Test (FMT) has been carried out at JET on the request of the ITER Design Team. Up to date two exposures have been performed in JET with carbon walls: 35 h of plasma operation (Step 1 in 2005-2007) and recently accomplished Step 2 (2008-2009): 45 h exposure with 32.7...
Mr
Siwon Jang
(KAIST)
11/29/11, 2:34โฏPM
Posters
A fast, two-dimensional (2-D) tangential soft x-ray pinhole camera (TXPC), which is a soft x-ray imaging diagnostic system with a wide angle toroidal view, has been developed for KSTAR plasmas. It consists of 50x50 channel multi-wire proportional counter (MWPC) filled with a gas mixture of 78% Kr, 20% C2H6, and 2% CF4 at atmospheric pressure and a selection of beryllium filters for...
Mr
Adrien Rousseau
(CEA, DAM, DIF, F-91297 Arpajon, France)
11/29/11, 2:35โฏPM
Posters
The Laser MegaJoule (LMJ) facility will host inertial confinement fusion experiments in order to achieve ignition by imploding a Deuterium-Tritium target. In order to understand reasons for failures, a X-ray imager is necessary to diagnose the core size and the shape of the DT-microballoon in the 10-100 keV band in complement of neutron imaging system. Such a diagnostic will be composed of two...
Dr
Maria Richetta
(University of Rome "Tor Vergata")
11/29/11, 2:36โฏPM
Posters
In 2007 Betti et al. [1] proposed a novel approach to ICF. It consists of igniting the target by a very strong converging shock (Pโ several hundreds of Mbar), produced by intense laser spikes (1e16W/cm2). The shock must hit the target at the end of the compression phase and before the stagnation of the target center. The scheme represents a very attractive solution for HiPER high repetition...
Dr
Khaled AYADI
(IOMP Universitรฉ FERHAT Abbas)
11/29/11, 2:37โฏPM
Posters
The applied studies based on the resonance of the surface Plasmonโs are particularly interesting for different stains; notably the utilization as sensors. Indeed, several studies carried, with the aide of the numeric simulations, on the optimization of the performances of the static and dynamic sensors thus that on some bio-sensors.
Some works on the process of realization of the midget...
Dr
Sarah Bollanti
(ENEA)
11/29/11, 2:38โฏPM
Posters
Schwarzschild objectives are widely used in the extreme ultraviolet (EUV)/soft X-ray spectral region both as reduction and magnification optics, e.g. for small-field projection lithography and microscopy, respectively.
When using a Schwarzschild objective as a micro-exposure tool (MET) at high spatial resolution (half-pitch โค 0.1 ฮผm), in addition to the tight requirements on the design and...
Luca Volpe
(MIB)
11/29/11, 2:39โฏPM
Posters
Generation of high intensity and well collimated multi energetic proton beams from laser-matter interaction extend the possibility to use protons as a diagnostic to image imploding target in Inertial Confinement Fusion experiments in the framework of experimental road map of Hiper project (the European High Power laser Energy Research facility Project). Point projection proton backlighting was...
Dr
Seung Hun LEE
(Korea Advanced Institute of Science and Technology)
11/29/11, 2:40โฏPM
Posters
The soft X-ray tomography is one of powerful tokamak diagnostics to investigate plasma shape or physical activities in the core region. It is possible to detect the core plasma behavior transparently, since the optical thickness of soft X-ray is thin. Therefore, the magnetohydrodynamic(MHD) instability and transport phenomena in the core plasma can be observed clearly. According to the...
Antonino Anzalone
(LNS)
11/29/11, 2:42โฏPM
Posters
The studies of plasma generated by laser - matter interaction requires detectors able to perform the time resolved imaging of photons and charged particles. Such information are necessary in order to characterize the time evolution of fundamental parameters (like temperature, density, etc.) of plasma. One of the key elements of such diagnostics is the position sensitive anode.
In this...
105.
Diagnostics improvement in the ABC facility and preliminary tests on a laser-cluster experiment
Dr
Fabrizio Consoli
(ENEA - Centro Ricerche Frascati)
11/29/11, 2:43โฏPM
Posters
The research on Inertial Confinement Fusion (ICF) is mainly developed using high power laser facilities. In this context the diagnostics of particle flows is a delicate issue, due to the fast timescales and to the strong electromagnetic and radiative contributions. The discrimination of the different particles emitted by the plasma is therefore not trivial, and it requires the use of several...
Gabriele Croci
(MIB)
11/29/11, 2:44โฏPM
Posters
The ITER neutral beam test facility under construction in Padova will host two experimental devices: SPIDER, a 100 kV negative hydrogen/deuterium RF source, and MITICA, a full scale, 1 MeV deuterium beam injector. A number of diagnostics will be deployed in the two facilities to qualify the beams [1]. This paper reports the design of a neutron diagnostic for SPIDER, as a first step towards the...
Dr
YUICHI OKAYASU
(JASRI/SPring-8)
11/29/11, 2:45โฏPM
Posters
We developed a three-dimentional electron bunch charge distribution (3D-BCD) monitor with single-shot detection. The monitor adopts a spectral decoding based Electro-Optic (EO) sampling technique that is non-invasive and enables real-time reconstruction of the 3D-BCD with 30- to 40-fs (FWHM) of noble temporal resolution. These goals are realized by simultaneously probing a number of Pockels EO...
Dr
Sergey Polosatkin
(Novosibirsk State Technical University)
11/29/11, 2:46โฏPM
Posters
Analysis of the energy distribution of charge-exchange neutrals is an informative diagnostic for fusion plasmas. Both passive and active (beam-assisted) diagnostics of charge-exchange particles are widely used and different types of neutral particle analyzers based on electric or magnetic field for particle separation have been designed. With the recent achievements in electronics and particle...
Dr
Yulii Sulyaev
(BINP)
11/29/11, 2:47โฏPM
Posters
Neutron counting is one of most important diagnostic tool of high-temperature plasma experiment. Informativeness and relevance of this diagnostic can be increased with analysis of shapes and amplitude distribution of count pulses, which allows to separate gamma-quanta background and pulse overlapping, or to find timing of the counts in relation to some events in plasma. At the same time modern...
Dr
Pasquale Gaudio
(Associazione EURATOM ENEA per la Fusione University of Rome Tor Vergata)
11/29/11, 2:48โฏPM
Posters
Various empirical models are available to determine the power threshold between the L and H mode of confinement. They are typically the results of regression analysis of the data collected in different machines and they are presented in terms of equations in power law monomial form. Even if the positive effects of the plasma shape on the confinement time have been clearly documented, the...
Dr
Geert Verdoolaege
(Ghent University)
11/29/11, 2:49โฏPM
Posters
Any measurement process involves the sampling from a latent probability distribution. This distribution contains all information about the quantity of interest and learning algorithms can benefit considerably from the inclusion of probabilistic information. The field of information geometry, which is well-established from the theoretical point of view, describes probability distribution...
Nadejda Drenska
("Sapienza" univ. di Roma)
11/29/11, 2:50โฏPM
Posters
The design, construction and commissioning of the magnetic spectrometer for the self-injection experiments with the Flame laser at LNF has demostrated extremely challenging: the characteristics of the detector are highly non conventional for laser-plasma physicists (high energy electrons), accelerator physicists (large angular divergence, energy spread) and particle phycisists (huge number of...
Dr
Tadzio Levato
(CNR INO Pisa & Univ. Tor Vergata)
11/29/11, 2:51โฏPM
Posters
A new era of laser based plasma accelerators is emerging following the commissioning of many high power laser facilities around the world. Extremely short laser pulses with energy of few or multi-joule level are available with these newly built facilities.
Preliminary results obtained last year at LNF with the sub-PetaWatt FLAME facility during the first phase of the self-injection test...
Dr
Jacek Rzadkiewicz
(Institute of Plasma Physics and Laser Microfusion)
11/29/11, 2:52โฏPM
Posters
ITER-oriented JET research program imposes new requirements on the high-resolution X-ray diagnostics instrumentation (KX1) for the impurity monitoring. Therefore, in addition to the upgrade of the Ni monitoring diagnostics system, one has to design and construct a new diagnostic instrument implemented in the same KX1 spectrometer for W impurity monitoring. Both, Ni and W characteristic X-ray...
Alberto Milocco
(Joลพef Stefan Institute)
11/29/11, 2:53โฏPM
Posters
The accurate simulation of fusion neutronics experiments is required for the development of the techniques aiming at monitoring the neutron flux and performing spectral analyses in the forthcoming ITER reactor. The interplay between experimental activity and simulation is the mean for proving and generalising the assumptions on ITER neutronics until it will be built. The work is carried out in...
Prof.
Yaming Zou
(Fudan University)
11/29/11, 2:54โฏPM
Posters
Electron beam ion traps (EBITs) are sophisticated devices capable of acting as both light sources and ion sources of highly charged ions (HCI). Basically they can provide ions of any charge state of any element, and consequently photon radiations from all kinds of excited states of these ions. This property makes EBIT unique and powerful in spectroscopic studies, especially studies along...
Prof.
Roger Hutton
(Fudan University)
11/29/11, 2:55โฏPM
Posters
Using the Shanghai permanent magnet electron beam ion trap, Shanghai-PermEBIT, we have established a program on the spectroscopy of low to medium charge states of Tungsten. The motivation of this program is to provide spectroscopic data for Tungsten of interest to Tokamak fusion plasma diagnostics. Due to thermal and mechanical properties, Tungsten has been chosen as one of the materials...
Dr
Sergei Popov
(Budker Institute of Nuclear Physics)
11/29/11, 2:56โฏPM
Posters
At the GOL-3 set up in BINP experiments on studying the relaxation mechanism of a powerful relativistic electron beam, and plasma confinement in multimirror magnetic field are carried out. At present, the mechanisms of generation of microwave radiation in plasma with Langmuir turbulence are investigated. An important place in these studies is the observation of the dynamics of plasma density...
Fabio Frassetto
(National Research Council of Italy-Institute of Photonics and Nanotechnologies, via Trasea 7, 35131 Padova, Italy)
11/29/11, 2:57โฏPM
Posters
We present the design and characterization of a compact and portable spectrometer especially realized to analyse in real time the high-order harmonic contents of the FEL beam at FLASH.
The instrument can be installed behind a generic experiment, at the end of a FEL beam line. It can monitor both the fluctuations of the fundamental FEL emission and its high-order harmonic content. The design...
Dr
Paolo Cardarelli
(INFN sez. Ferrara and Physics Department University of Ferrara)
11/29/11, 2:58โฏPM
Posters
The characterization of novel x-ray sources includes the measurement of the photon flux and the energy distribution of the beam produced.
The aim of BEATS2 experiment at INFN-LNF is the study of medical applications of an x-ray source based on Thomson relativistic backscattering. This source is expected to produce pulsed quasi-monochromatic x-ray beam with an instantaneous flux of 10^20 ph/s...
Mrs
Schirin Heidari Bateni
(Physics Department, University Roma Tre, Via della Vasca Navale 84, 00146 Rome, Italy)
11/29/11, 2:59โฏPM
Posters
Novel X-ray imaging detectors based on photoluminescence of color centers in lithium fluoride have been proposed and tested for extreme ultraviolet, soft and hard X-rays up to 10 keV. For the first time we present the optical characterization of LiF crystals and thin films irradiated at the TOPO-TOMO beamline of synchroton light source Anka (Karlsruhe, Germany) in the energy range (2-40 keV)...
F. Frassetto
(National Research Council of Italy-Institute of Photonics and Nanotechnologies (CNR-IFN), via Trasea 7, 35131 Padova, Italy)
11/29/11, 3:00โฏPM
Posters
We present the instrument that is used for the spectral and intensity diagnostics of the SPARC FEL test facility. The SPARC FEL is composed by a high brightness accelerator providing a high quality beam at energies between 110 and 180 MeV and an undulator beam line composed by six, variable gap, modules. The flexibility offered by the variable gap configuration of the SPARC undulator and the...
Dr
Pasquale Gaudio
(Associazione EURATOM-ENEA - University of Rome โTor Vergataโ , Roma, Italy)
11/29/11, 3:01โฏPM
Posters
Internal magnetic measurements are essential to obtain reliable and accurate magnetic reconstructions in the interior of the plasma column in Tokamaks. In the last years, polarimetry has been increasingly used to provide global constraints to equilibrium codes. JET polarimeter1 has four vertical and four lateral chords, whose arrangement is similar to the topology of the diagnostic foreseen...
Dr
Michela Gelfusa
(University of Rome "Tor Vergata")
11/29/11, 3:02โฏPM
Posters
On JET the magnetic topology is normally derived from the code EFIT, which solves the Grad-Shafranov equation with constraints imposed by the available measurements, typically the pick-up coils. Both the code and the measurements are expected to perform worse during ELMs. To assess this hypothesis, various statistical indicators, based on the values of the residuals and their probability...
Dr
Onofrio Tudisco
(ENEA)
11/29/11, 3:03โฏPM
Posters
The plasma density in tokamaks, as in many laboratory plasmas, is measured using plasma optical properties at appropriate wavelength. The mostly applied technique is the interferometry but also other techniques as the reflectometry, polarimetry and time-of-flight radar are employed. Recently in FTU, a CO/CO2 scanning interferometer and a time-of-flight radar (denominated refractometry) has...
Dr
Zwinglio Guimarรฃes-Filho
(IFS-PIIM, Aix-Marseille Univ.)
11/29/11, 3:04โฏPM
Posters
Tore Supra is a French tokamak with a circular cross section of 2.4m of major radius and 0.7m of minor radius. The ECE diagnostic of Tore Supra [J.-L.Sรฉgui, Rev. Sci. Instrum. 76 (2005) 123501] has 32 channels which signals can be recorded in two acquisition rates: the slow mode, at 1kHz, which register the ECE measurements during the whole discharge and the fast acquisition mode, recently...
Prof.
Christopher Watts
(Iter Organization)
11/29/11, 3:05โฏPM
Posters
The operation of ITER requires high-quality estimates of the plasma density over multiple regions in the plasma for plasma evaluation, plasma control and machine protection purposes. Although the density regimes of ITER are not very different from those of existing tokamaks (10^18 โ 10^21 m^-3), the severe conditions of the fusion plasma environment present particular challenges to...
Serov Vadim
(TRINITI)
11/29/11, 3:06โฏPM
Posters
Charge Exchange Recombination Spectroscopy (CXRS) diagnostic with use of diagnostic or heating beams of atoms is widely used practically in all modern tokamaks. This technique is utilized for a wide variety of measurements in the plasma edge and core, including ion temperature (via Doppler broadening of intrinsic impurity lines, which are efficiently populated by charge exchange from beam...
Mr
Kumar Ajay
(Institute For Plasma Research)
11/29/11, 3:07โฏPM
Posters
Passive CX-NPA has been designed and developed for the Aditya tokamak ion temperature measurement. Ion temperature measurements have been carried out by the energy analysis of passive Charge Exchange (CX) neutrals escaping out of the ADITYA-tokamak (Minor radius a = 25 cm, major radius R = 75 cm) plasma using a 45-degree Electrostatic Parallel Plate Analyzer [EPPA]. The upgraded the EPPA with...
Edoardo Alessi Alessi
(CNR Istituto di Fisica del Plasma "Piero Caldirola")
11/29/11, 3:08โฏPM
Posters
Tokamak plasmas are prone to various kind of magnetohydrodynamic instabilities which may affect the
energy and particle confinement time or lead in some cases to disruptive plasma termination. Such
instabilities take the form of magnetic islands driven by the reduction of bootstrap current where the
pressure profile is flattened (Neoclassical Tearing Modes) or by the radial gradient of the...
Dr
Bohdan Bieg
(Maritime University of Szczecin)
11/29/11, 3:09โฏPM
Posters
The polarization state of the infrared beam reflected from a metallic cube-corner retroreflector (CCR) is analyzed using the Mueller matrix formalism, as it was suggested by Segre and Zanza [1]. In a given paper polarization changes of an electromagnetic beam reflected from CCR are studied in a rather wide range of parameters: complex reflection coefficients of metalic surfaces, beam...
Dr
Janusz Chrzanowski
(Maritime University of Szczecin)
11/29/11, 3:10โฏPM
Posters
The modern plasma polarimetry is based on Stokes vector formalism (SVF) suggested and developed in depth by Segre (see [1] and cited there references). Segreโs equations describe evolution of the Stokes vector along the ray in the weakly inhomogeneous and weakly anisotropic plasma. Alternative approach โ Angular Variables technique (AVT) suggested by Czyลผ, Bieg, Kravtsov [2] in distinction to...
Dr
Luca Giacomelli
(Milano-Bicocca University)
11/29/11, 3:11โฏPM
Posters
Abstract. Fast neutron monitors are being developed for accelerator applications such as the study of neutron-induced single event effects (SEE) in microelectronics components, which are been recognized as a key threat to the reliability of advanced electronic systems. A new beam line (CHIPIR) dedicated to neutron SEE testing is being built at the ISIS spallation source (UK) to provide fluxes...
Giulia De Luca
(PI)
11/29/11, 3:12โฏPM
Posters
Time Of Flight PET is a promising technique that can improve the image quality of a PET scanner. A TOF PET
detector must be designed by optimizing its energy and time resolution. Several researches are being performed
to improve the time performances of the PET detectors. Recent studies demonstrate that LSO:Ce codoped with
Ca (LSO:Ce,Ca) shows an higher light output, a reduced decay times...
MATTEO MORROCCHI
(PI)
11/29/11, 3:13โฏPM
Posters
Silicon Photomultipliers (SiPM) represent an effective alternative to photomultiplier tubes used in actual Positron Emission Tomography (PET) scanners. Exploiting the design solutions offered by the Silicon technology it is now possible to build small devices and to pack them in monolithic arrays at millimetric pitch. This feature allows overcoming the limit in spatial resolution imposed by...
