scholarly journals Digital Archives for Nuclear Emulsion Data

2019 ◽  
Vol 208 ◽  
pp. 13003
Author(s):  
Koichi Kodama ◽  
Takehiro Kamiya ◽  
Masakatsu Ichimura ◽  
Mitsuhiro Nakamura
Keyword(s):  
Preliminary Data ◽  
Nuclear Emulsion ◽  
Cosmic Ray ◽  
Current Status ◽  
Accelerator Physics ◽  
Digital Archives ◽  
Significant Progress

Digital archives for nuclear emulsion data of past experiments, such as in cosmic-ray and accelerator physics, is being studied and prepared. Significant progress of HTS, which is an automatic read-out system for tracks recorded in emulsion, is achieving a read-out speed of about 1m2/hour and opens a possibility to read all tracks recorded in emulsion of past experiments. Current status of our first trial with RUNJOB emulsion plates is reported. Till now, the top-most 10 plates had been scanned by HTS and preliminary data is presented.

CURRENT STATUS OF THE TA EXPERIMENT

2008 ◽  
Vol 23 (17n20) ◽  
pp. 1301-1312
Author(s):  
◽  
MASAHIRO TAKEDA
Keyword(s):  
Energy Range ◽  
Preliminary Data ◽  
Cosmic Ray ◽  
Current Status ◽  
Hybrid Technique ◽  
Telescope Array ◽  
Observation Phase ◽  
Large Aperture ◽  
Hybrid Type ◽  
Previous Generation

In the highest energy range on the cosmic ray observation, previous-generation experiments were terminated in these years. The ongoing experiments have introduced a hybrid technique of a widely spread surface array and atmospheric fluorescence detectors. This hybrid technique with a large aperture is expected to calibrate those two methods, only one of which was used in the previous-generation experiments. The Telescope Array (TA) experiment is one of those hybrid-type experiments located in Utah, USA. The TA construction was completed in 2007 and our observation phase is now in progress. This report presents the current status and the first preliminary data.

Driving with Low Vision

1979 ◽  
Vol 73 (9) ◽  
pp. 345-350
Author(s):  
Dennis K. Kelleher
Keyword(s):  
Preliminary Data ◽  
Visually Impaired ◽  
Low Vision ◽  
Current Status ◽  
Training Sequences ◽  
Conducting Research ◽  
Licensing Standards

Discusses the current status of driving with low vision, both with and without a bioptic telescope. It specifies licensing criteria, training sequences, and identifies problem areas. Preliminary data from a comparison of safety records in three states are presented and recommendations are made for future licensing standards and for conducting research on visually impaired drivers.

scholarly journals The Management of Iron Chelation Therapy: Preliminary Data from a National Registry of Thalassaemic Patients

Anemia ◽  
2011 ◽  
Vol 2011 ◽  
pp. 1-7 ◽  
Author(s):  
Adriana Ceci ◽  
Laura Mangiarini ◽  
Mariagrazia Felisi ◽  
Franco Bartoloni ◽  
Angela Ciancio ◽  
...  
Keyword(s):  
Preliminary Data ◽  
Age Groups ◽  
Iron Chelation ◽  
Cost Effective ◽  
National Registry ◽  
Therapeutic Interventions ◽  
Current Status ◽  
Mediterranean Countries ◽  
Important Health ◽  
Definition Of

Thalassaemia and other haemoglobinopathies constitute an important health problem in Mediterranean countries, placing a tremendous emotional, psychological, and economic burden on their National Health systems. The development of new chelators in the most recent years had a major impact on the treatment of thalassaemia and on the quality of life of thalassaemic patients. A new initiative was promoted by the Italian Ministry of Health, establishing a Registry for thalassaemic patients to serve as a tool for the development of cost-effective diagnostic and therapeutic approaches and for the definition of guidelines supporting the most appropriate management of the iron-chelating therapy and a correct use of the available iron-chelating agents. This study represents the analysis of the preliminary data collected for the evaluation of current status of the iron chelation practice in the Italian thalassaemic population and describes how therapeutic interventions can widely differ in the different patients' age groups.

scholarly journals Telescope Array Experiment

2019 ◽  
Vol 208 ◽  
pp. 08002
Author(s):  
Shoichi Ogio
Keyword(s):  
Cosmic Ray ◽  
Low Energy ◽  
Current Status ◽  
Future Prospects ◽  
Fluorescence Detector ◽  
Telescope Array ◽  
Air Shower ◽  
Primary Particles ◽  
Shower Array ◽  
Air Shower Array

The Telescope Array is the largest hybrid cosmic ray detector in the Northern hemisphere designed to measure primary particles in 4 PeV to 100 EeV range. The main TA detector consists of an air shower array of 507 plastic scintillation counters on a 1.2 km square grid and fluorescence detectors at three stations overlooking the sky above the air shower array. The experiment and its recent measurements - spectrum, composition, and anisotropy - is reviewed. Recently the construction of the TA Low energy Extension (TALE) detector, which consists of an additional fluorescence detector and an infill array, was finished. TALE lowers the energy threshold of TA down to 4 PeV. We are also constructing the TAx4 detector to increase statistics in particular at the highest energies. The current status and the future prospects of these new TAx4 experiments is reported.

scholarly journals Isotopes of Cosmic Ray Elements from Neon to Nickel

1981 ◽  
Vol 94 ◽  
pp. 33-34
Author(s):  
C. J. Waddington ◽  
P. S. Freier ◽  
R. K. Fickle ◽  
N. R. Brewster
Keyword(s):  
Total Energy ◽  
Nuclear Emulsion ◽  
Cosmic Ray ◽  
Mass Resolution ◽  
Residual Range ◽  
Charge Resolution

We are reporting here on the results obtained from a balloon exposure of a cosmic ray detector flown in 1977. This detector, described elsewhere, Gilman and Waddington (1975), Young (1979), measures elemental charge from scintillation and Cherenkov signals and mass from Cherenkov and total energy determined from a measure of residual range in nuclear emulsion. The charge resolution obtained ranged from 0.19 to 0.21 charge units between neon and nickel. This resolution was sufficient to ensure that all but a few percent of the nuclei were correctly identified, even for those elements of low abundance that have neighbors with high abundances, such as Cl or Al. The mass resolution obtained for those nuclei that stopped in the emulsions ranged from 0.40 to 0.70 amu for A between 20 and 60 amu. This was not adequate to uniquely resolve neighboring mass peaks in many cases, but was adequate to draw a number of conclusions regarding many of the more abundant elements.

scholarly journals The Galactic Evolution of Boron

2000 ◽  
Vol 198 ◽  
pp. 405-414 ◽  
Author(s):  
Francesca Primas
Keyword(s):  
Hubble Space Telescope ◽  
Cosmic Ray ◽  
Big Bang ◽  
Stellar Structure ◽  
Current Status ◽  
Big Bang Nucleosynthesis ◽  
Medium Resolution ◽  
The Galaxy ◽  
Stellar Interiors ◽  
Astrophysical Research

Boron, together with lithium and beryllium, belongs to the group of the so-called light elements, the importance of which ranges from providing important tests to Big Bang nucleosynthesis scenarios to being useful probes of stellar interiors and useful tools to further constrain the chemical evolution of the Galaxy.Since it became operative in the late eighties, the Hubble Space Telescope (HST) and its high- and medium-resolution spectrographs have played a key role in analyzing boron. Boron has now been observed in several stars and in the interstellar medium (ISM), providing important information in different fields of astrophysical research (nucleosynthesis, cosmic-ray spallation, stellar structure). In particular, determinations of boron in unevolved stars of different metallicity have allowed to study how boron evolves with iron.After a general review of the current status of boron observations and of the major uncertainties affecting the measurements of its abundance, I will mainly concentrate on unevolved stars and discuss the ‘evolutionary’ picture emerging from the most recent analyses and how its interpretation compares with theoretical expectations. A brief discussion on future prospects will conclude this contribution, showing how the field may evolve and improve.

COSMIC RAY PHENOMENA AT MINIMUM IONIZATION IN A NEW NUCLEAR EMULSION HAVING A FINE GRAIN, MADE IN THE LABORATORY

1954 ◽  
Vol 32 (8) ◽  
pp. 538-554 ◽  
Author(s):  
Pierre Demers
Keyword(s):  
Grain Size ◽  
Nuclear Emulsion ◽  
Electron Pair ◽  
Cosmic Ray ◽  
Silver Bromide ◽  
Positive Identification ◽  
Fine Grain ◽  
Scattering Measurements ◽  
Made In ◽  
Grain Diameter

The preparation of a silver bromide emulsion in the form of baseless sheets and their use in thick homogeneous stacks are described. In these sheets, a suitable development brings out minimum ionization tracks with a grain diameter 0.1 to 0.2 μ, and a linear grain density of 15 per 100 μ. The sequence of observations which led to the positive identification of minimum tracks is discussed. Short recoils and delta rays are visible, and excellent discrimination is available at all ionizing powers. The influence of grain size on fog is analyzed.Several cosmic ray phenomena containing minimum tracks are presented: single tracks, hard showers, πμe events, and an electron pair. Distortion is very small, and it is shown that the small grain size renders feasible better scattering measurements on higher energy particles. With this emulsion, nearly every possible measurement should become feasible with greater accuracy.

LATTICE QCD CURRENT STATUS AND GOALS AT ONE TERAFLOPS

1994 ◽  
Vol 05 (02) ◽  
pp. 195-200
Author(s):  
CARLETON DeTAR
Keyword(s):  
Numerical Simulations ◽  
Quantum Chromodynamics ◽  
Lattice Qcd ◽  
Recent Progress ◽  
Current Status ◽  
Strong Interactions ◽  
Significant Progress ◽  
The Past

Through numerical simulations over the past decade we have made significant progress toward solving quantum chromodynamics (QCD), the widely accepted theory of the strong interactions. Quantitatively respectable results are beginning to emerge. We are also gaining new qualitative insights into the workings of the theory that will assist in the design and analysis of experiment. I give a few examples of recent progress in lattice QCD and discuss goals and prospects for computations using the coming generation of teraflops-scale supercomputers.

scholarly journals Gaia: Astrometric performance and current status of the project

2009 ◽  
Vol 5 (S261) ◽  
pp. 296-305 ◽  
Author(s):  
Lennart Lindegren
Keyword(s):  
Solar System ◽  
Data Processing ◽  
Preliminary Data ◽  
Scientific Data ◽  
Current Status ◽  
Fundamental Physics ◽  
Implementation Phase ◽  
Optical Reference ◽  
Measurement Principle

AbstractThe scientific objectives of the Gaia mission cover areas of galactic structure and evolution, stellar astrophysics, exoplanets, solar system physics, and fundamental physics. Astrometrically, its main contribution will be the determination of millions of absolute stellar parallaxes and the establishment of a very accurate, dense and faint non-rotating optical reference frame. With a planned launch in spring 2012, the project is in its advanced implementation phase. In parallel, preparations for the scientific data processing are well under way within the Gaia Data Processing and Analysis Consortium. Final mission results are expected around 2021, but early releases of preliminary data are expected. This review summarizes the main science goals and overall organisation of the project, the measurement principle and core astrometric solution, and provide an updated overview of the expected astrometric performance.

Sign in / Sign up

Export Citation Format

Share Document