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Showing 1 to 20 of 42 for “"IThemba Labs"”.
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Monte Carlo simulations of the iThemba LABS neutron beam facility
The iThemba LABS neutron beam facility is currently being used for various applications of fast neutron studies, such as measurements of fission cross sections, the biological effectiveness of high-energy neutrons, calibration of detectors used for dose monitoring in space and aircrafts, and the …
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Beam emittance measurements in the SPC2 injection beamline at iThemba LABS
… beam with the acceptance of an accelerator. At iThemba LABS, the low energy beam transport (LEBT) system required a system that measures transverse beam emittance. This beamline connects the two electron cyclotron resonance ion sources (ECRIS) to the second solid pole injector cyclotron (SPC2) …
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Towards measuring the relative biological effectiveness of high-energy neutrons at iThemba LABS
… value of neutron RBE at low doses (RBEM) at the iThemba Laboratories for Accelerator Based Sciences (LABS) high-energy neutron facility. Data from a preparatory experiment conducted with neutrons produced by a 66.48 MeV proton beam irradiating an 8.0 mm lithium target are used to illustrate the …
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Measurement of fluence at the D-line fast neutron facility at iThemba LABS
… produced at the fast neutron beam facility of iThemba LABS, using an NE213 organic liquid scintillator detector and a 238U fission ionisation chamber. Neutron beams were produced by irradiating a 6 mm natural lithium target with pulsed proton beams obtained from the k = 200 separated sector …
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In-situ gamma-ray mapping of environmental radioactivity at Ithemba Labs and associated risk assessment
… Radioactivity Laboratory (ERL) of /Themba LABS performed in-situ and ex-situ measurements of environmental radioactivity on the /Themba LABS (/TL) site. The ERL's Multi-Element-Detector-for-Underwater-Sediment-Activity (MEDUSA) and high-purity germanium (HPGe) detector systems were used to …
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Automation of the γ-ray spectrometry setup of the Environmental Radioactive Laboratory at NRF-iThemba LABS
… Radioactivity Laboratory (ERL) of NRF-iThemba LABS. The primary objective of this research was to integrate domain-specific knowledge from nuclear spectroscopy with advanced machine learning techniques to enable reliable automated analysis of γ-ray spectra. To achieve this, γ-ray …
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Development of a duoplasmatron ion source at the Ithemba laboratory for accelerator based science (ithemba labs)
… and production of radioisotopes at iThemba LABS.
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Measurement of neutron production from an ¹⁸O target for the production of radioactive-ion beams at iThemba LABS
iThemba LABS, in the South African Isotope Facility (SAIF) project, proposes to produce radioactive ion beams by the fission of uranium. A natural way to fission uranium is to use high-intensity proton beams from a cyclotron. However, neutron-induced fission gives enhanced production of …
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Proton beam steering control system for high precision radiotherapy at iThemba LABS : an investigation on actuator saturation constraints
… to the Proton beam steering control at iThemba LABS. The steering of charged particles occurring in research plants is one of the interests of control systems. In this work an investigation of the algorithm for the control of the proton beam steering system in the radiotherapy treatment …
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The development of a cost-effective beam loss monitor for use at the K600 magnetic spectrometer at iThemba LABS
… for use at the K600 magnetic spectrometer at iThemba LABS. To this end. the commonly used materials and technologies were reviewed and photo diodes were chosen because of their low price, high performance and ready availability. Experiments have been carried out and compared to theoretical …
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Radiation Shielding calculations using MCNPX transport code for cost optimization of the shielding material to be used at iThemba LABS.
At iThemba Laboratory for Accelerator Based Sciences (iThemba LABS), the shared use of the Separated Sector Cyclotron has reached the point where further advancement of the respective disciplines cannot be realised. The new facility is proposed to respond to the demands of these, specifically a …
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Development of the analyser module for the MIDAS Data Acquisition System operating on the K600 magnetic spectrometer at iThemba LABS, Cape Town
The focal-plane detector package at iThemba LABS, Cape Town, is reviewed and a new analyser module is developed. The mathematical methods employed by the analyser are also reviewed and the final system is calibrated and tested against experimental data taken at iThemba LABS, Cape Town.
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A new compact neutron spectrometer
… neutron beams produced using the iThemba LABS cyclotron. A segmented variation of the spectrometer is capable of providing directional information through the comparison of count rates between scintillator cells.
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The study of high-spin states in 196HG
… of 65 MeV. The experiment was performed at iThemba LABS using the AFRODITE array. The y-y coincidence data in two different experiments using different geometries of the y-detectors are obtained. The analysis of results, concentrating on the measurement of Directional Correlations in …
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Neutron activation analysis of plantinum converter and furnace mattes using a D-T sealed tube neutron generator
… origin. The experimental work was carried out at iThemba LABS national laboratory near Cape Town, South Africa. A new NAA facility was designed and built for this purpose, and fully characterized, featuring a 14 MeV neutron generator. Gamma-ray spectra were measured using an HPGe detector. A …
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Circulation rate modelling of tumbling mill charge using positron emission particle tracking (PEPT)
… and further experiments were conducted at the iThemba LABS in Cape Town. The experimental approach is highly suited to allow the effective examination of the assumption that the grinding charge in these mills circulates at a constant rate of unity.
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Observing flow using fast neutron radiography and positron emission particle tracking
… at the PEPT Cape Town facility located at iThemba LABS, Cape Town. The steady state motion of media, within a laboratory-scale tumbling mill, was studied for a range of speed and media mixes, using both FNR and PEPT. Several operational parameters were derived from the data, which could be …
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Search for non-yrast states in ¹⁶°Yb
… detected using the AFRODITE Ge detector array at iThemba LABS. The computer program EONS was developed to measure the half-life of single ϒ rays for identification. The level scheme constructed from the ϒ-ϒ coincidence and single ϒ ray measurements confirms the existing level structure of ¹⁶⁰Yb. …
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Low Pressure Focal Plane Detectors for the K600: A design study
… K600 high-resolution magnetic spectrometer at iThemba LABS being an example of such a system. This dissertation presents a review of the K600 magnetic spectrometer and its position-sensitive focalplane detectors. The diverse research program conducted using this spectrometer is also discussed. …
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Determination of the Spectroscopic Quadrupole Moment of 40Ar
… was performed at the AFRODITE vault of iThemba LABS to determine the Qs(2+1 ) of 40Ar. A beam of 40Ar at a laboratory energy of 134.94 MeV was Coulomb excited on a 194Pt target at a safe distance between nuclear surfaces of 6.5 fm. The backward scattered 40Ar particles were detected by …
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