Browsing by Author "Tan, YRE"

Now showing 1 - 4 of 4
  • Thumbnail Image
    Item
    Application of the CORIS360 Gamma Ray Imager at a light source
    (JACoW Publishing, 2021-05-24) Tan, YRE; Boardman, DA; Chartier, L; Guenette, MC; Ilter, M; Watt, GC
    The CORIS360 is a gamma-ray imager developed at Australian Nuclear Science and Technology (ANSTO) for identifying and localising sources of radiation typically from gamma emitting radionuclides. The low EMI and low noise power supply features of the imaging technology have enabled it to have a low energy detection threshold and to detect photons as low as 20 keV. This report shall present the initial measurements performed at the Australian Synchrotron, in the storage ring and beamlines, where the imager is able to detect radiation from all sources of synchrotron radiation (dipole, wiggler and undulator). The radiation imaging results from the injection system and scrapers (to dump the stored beam) will be discussed. Future developments for imaging in pulsed radiation environments and time varying environments will also be discussed. © 2021 JACoW
  • Thumbnail Image
    Item
    Beam dynamics, injection and impedance studies for the proposed single pulsed nonlinear injection kicker at the Australian Synchrotron
    (JACoW Publishing, 2019-05-19) Auchettl, R; Dowd, RT; Tan, YRE
    The Australian Synchrotron are currently investigating the use of a single pulsed nonlinear injection kicker (NLK) to free floor space within the ring for future beamline development. The NLK has a zero and flat magnetic field at the stored beam to leave the stored beam undisturbed but has a maximum field off-axis where the injected beam is located. After the kick, the injected beam is stored. While NLKs have been prototyped at many facilities around the world, injection efficiency and heat loading have been the main impediment to deployment of the NLK. The wakefields that pass through the ceramic chamber aperture can cause severe heat loading and impedance. Despite achieving impressive injection efficiencies, a previous prototype at BESSY II * showed that strong interactions of the stored beam resulted in high heat load causing the thin 5µm Titanium coated ceramic chamber to reach temperatures > 500 °C and fail. To avoid beam induced heat loads, this paper presents studies of the wake impedance and thermal behaviour for our proposed NLK design. Injection simulations and future considerations for installation and operation at the Australian Synchrotron will be discussed.
  • Thumbnail Image
    Item
    MOSkin dosimetry for an ultra-high dose-rate, very high-energy electron irradiation environment at PEER
    (Frontiers, 2024-07-30) Cayley, J; Tan, YRE; Petasecca, M; Cutajar, DL; Breslin, T; Rosenfeld, AB; Lerch, MLF
    FLASH radiotherapy, which refers to the delivery of radiation at ultra-high dose-rates (UHDRs), has been demonstrated with various forms of radiation and is the subject of intense research and development recently, including the use of very high-energy electrons (VHEEs) to treat deep-seated tumors. Delivering FLASH radiotherapy in a clinical setting is expected to place high demands on real-time quality assurance and dosimetry systems. Furthermore, very high-energy electron research currently requires the transformation of existing non-medical accelerators into radiotherapy research environments. Accurate dosimetry is crucial for any such transformation. In this article, we assess the response of the MOSkin, developed by the Center for Medical Radiation Physics, which is designed for on-patient, real-time skin dose measurements during radiotherapy, and whether it exhibits dose-rate independence when exposed to 100 MeV electron beams at the Pulsed Energetic Electrons for Research (PEER) end-station. PEER utilizes the electron beam from a 100 MeV linear accelerator when it is not used as the injector for the ANSTO Australian Synchrotron. With the estimated pulse dose-rates ranging from (7.84±0.21)×105 Gy/s to (1.28±0.03)×107 Gy/s and an estimated peak bunch dose-rate of (2.55±0.06)×108 Gy/s, MOSkin measurements were verified against a scintillating screen to confirm that the MOSkin responds proportionally to the charge delivered and, therefore, exhibits dose-rate independence in this irradiation environment. © 2024 Cayley, Tan, Petasecca, Cutajar, Breslin, Rosenfeld and Lerch. This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.
  • Thumbnail Image
    Item
    Proceedings of the 10th International Particle Accelerator Conference
    (JACoW, 2019-05-19) Boland, MP; Tanaka, H; Button, D; Dowd, RT; Schaa, VRW; Tan, YRE
    The 10th International Particle Accelerator Conference (IPAC’19), will be held in Melbourne, Australia from May 19 -24, 2019. The venue will be the world-leading Melbourne Convention and Exhibition Centre (MCEC) located in the spectacular Southbank precinct and overlooking Melbourne city and Yarra River. IPAC is the main international event for the worldwide accelerator community and industry. Attendees will be presented with cutting-edge accelerator research and development results and gain the latest insights into accelerator facilities across the globe. With over 1000 delegates and 70 industry exhibits, this is a unique opportunity to network with, learn from and meet a wide range of decision makers, opinion leaders, buyers and new kids on the block. Melbourne has been ranked the Word’s Most Liveable City for seven years running and is also the gateway to some of Australia’s most scenic and beautiful regions including the Great Ocean Road, Yarra Valley, Mornington Peninsula, and Central Goldfields. Melbourne itself is home to world-class restaurants, galleries, shopping, and assorted cultural highlights. At IPAC’19, you will have the opportunity to meet and interact with accelerator scientists, engineers, students, and vendors while experiencing the world’s most liveable city.