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Browsing Scientific and Technical Reports by Subject "Accelerators"
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- ItemCommissioning and final installation report for the STAR Accelerator Facility(Australian Nuclear Science and Technology Organisation, 2005-09) Garton, DThis document describes the commissioning phases, management, safety and approvals systems used during the installation of the STAR Accelerator Facility. It is also intended as a historical account of changes to the engineering specification and the necessary modifications that were made to meet local and national standards.
- ItemDating, mass spectrometry and nuclear science: a proposed new facility at Lucas Heights.(Australian Atomic Energy Commission, 1984-01) Bird, JR; Airey, PL; Boldeman, JW; Cohen, DD; Duerden, PIt is proposed that the AAEC install a high-technology, multi-user facility based on an 8 MV tandem accelerator to provide new capabilities in the following fields: (a) Radioisotope dating and ultra-sensitive trace element determination in isotope hydrology, salinity, sedimentology, erosion, actinide transport and materials studies. (b) Physics studies for the development of methods of applying nuclear materials safeguards, the provision of neutron dosimetry standards, measurements of precision data for radiation interactions, and the development of new methods for radioisotope dating. (c) Development of nuclear and ion beam techniques with applications in occupational health, biomedicine, materials modification, industrial problems and other fields. (d) Special requirements for accelerator-based radiocarbon dating of geological and archaeological samples not provided by other laboratories, coordinated by the Australian National University. These primary objectives include collaborative projects with the Bureau of Mineral Resources, Geology and Geophysics (BMR), the NSW Water Resources Commission (NSWWRC) and, under the auspices of the Australian Institute of Nuclear Science Engineering (AINSE), with Australian universities and other advanced educational institutions. Existing inter-regional programs in hydrology and neutron physics would also be served by the proposed facility making possible an expansion in the scope of joint projects with other countries in the SE Asian region.
- ItemHigh energy, heavy ion nuclear microprobe for ion beam research on the tandem accelerator at ANSTO.(Australian Nuclear Science and Technology Organisation, 1996-04) Cohen, DD; Siegele, R; Dytlewski, NA comprehensive review is given on the production and use heavy ion beams with spot sizes of a few μm. The development of a high energy, heavy ion microprobe at ANSTO and its possible applications are discussed.
- ItemMegavolt accelerator systems for environmental monitoring at ANSTO(Australian Nuclear Science and Technology Organisation, 2023-01) Cohen, DDThe accelerator based ion beam techniques of ion beam analysis (IBA) and accelerator mass spectrometry (AMS) have been applied to environmental studies for many decades. IBA is particularly suited to fine particle air pollution studies where multi-elemental analysis of microgram samples is required. AMS, using 14C isotope, is a key tool for climate change studies and other isotopes like 36Cl and 10Be can be applied to ground water and soil erosion studies depending on the isotopic half-life and timescale being used. Megavolt accelerator systems together with modern detector systems are capable of individual atom and photon counting and consequently are very sensitive detection systems. They are capable of precise and accurate measurements on very small sample sizes. The multi-element IBA technique of PIXE is capable of measuring some elements with (µg/g) sensitivity on picogram (pg) samples. The AMS techniques used in 14C analysis have achieved dates out to 50,000 years on 10 µg samples.
- ItemParticle induced x-ray emission.(Australian Nuclear Science and Technology Organisation, 1991-08) Cohen, DDThe accelerator based ion beam technique of Particle Induced X-ray Emission (PIXE) is discussed in some detail. This report pulls together all major reviews and references over the last ten years and reports on PIXE in vacuum and using external beams. The advantages limitations costs and types of studies that may be undertaken using an accelerator based ion beam technique such as PIXE are also discussed.
- ItemSydney particle characterisation study PM2.5 source apportionment in the Sydney Region between 2000 and 2014(Australian Nuclear Science and Technology Organisation, 2016) Cohen, DD; Atanacio, AJ; Stelcer, E; Garton, DThe Australian Nuclear Science and Technology Organisation (ANSTO) has been applying accelerator based nuclear techniques to the characterisation of fine PM2.5 ambient air pollution since the early 1990s. Over the decades large long-term databases have been acquired at dozens of sites both in Australia and internationally on the PM2.5 mass together with over 23 different elemental and chemical species that make up this fine particle pollution. In this study we used data previously collected by ANSTO from four of our long-term sampling sites covering the period from 1 January 2000 to 31 December 2014. Positive matrix factorisation (PMF) source apportionment techniques were applied to this data to identify seven different source components or fingerprints that make up the measured total PM2.5mass at each of these four sites. The primary aim of this study was to: - convert the existing 15-year PM2.5 mass and elemental datasets for four given sites in the Sydney basin into identifiable source fingerprints - quantify the absolute and the percentage contribution of each of these fingerprints to the total fine PM2.5 mass - provide seasonal and annual variations for each of the source fingerprints - provide a readily accessible database containing the daily source fingerprints and their contributions covering the 15-year period from 2000–2014 for four given sites in the Sydney basin if possible, identify and quantify the major contributors of fine particle pollution to the ambient air quality in Sydney. Typically fine particles were collected over 24-hour periods twice a week (104 filters per year) at Lucas Heights, Richmond, Mascot and Liverpool sites over a 15-year period from 2000 to 2014. In all, around 6000 sampling days are represented by this study. Each of these filters was analysed for the 23 elemental and chemical species: hydrogen (H), sodium (Na), al uminium (Al), silicon (Si), phosphorous (P), sulfur (S), chlorine (Cl), potassium (K), calcium (Ca), titanium (Ti), vanadium (V), chromium (Cr), manganese (Mn), iron (Fe), cobalt (Co), nickel (Ni), copper (Cu), zinc (Zn), selenium (Se), bromium (Br), lead (Pb), bl ack carbon (BC) and total nitrogen (TotN) to concentrations down to 1ngm–3 of air sampled. TotN is the total nitrogen from ammonium and nitrate ions. © 2016 Australian Nuclear Science and Technology Organisation
- ItemVacuum technology and vacuum design handbook for accelerator technicians(Australian Nuclear Science and Technology Organisation, 2011-11-18) Garton, DThis handbook is a compilation of information gathered from over 50 years of direct hands-on experience to applicable information widely available from the vacuum technology industry. It seeks to address common and specific vacuum technology problems whilst clarifying the design standards and philosophies adopted for use in the ANSTO accelerator facilities. The author wishes to thank the reviewers and the many technicians from ANSTO that have contributed directly and indirectly to this booklet.