Mr
Patrick Hurh
(Fermi National Accelerator Laboratory)
12/9/19, 9:15 AM
Oral presentation
Dr
Alexander Gottberg
(TRIUMF)
12/9/19, 9:45 AM
The family of Radioactive Ion Beam (RIB) facilities is growing and gaining capabilities with new projects in preparation at RISP (Korea), INFN-LNL (SPES), GSI (FAIR) and expanding facilities at ISAC (ARIEL), NSCL (FRIB), ISOLDE (HIE-ISOLDE and EPIC), RIKEN (RIBF), ANL (Caribu) and others. The programs are based on the ISOL or fragmentation production techniques with added capabilities of...
JOACHIM VOLLAIRE
(CERN)
12/9/19, 11:00 AM
Oral presentation
The operation of the on-line isotope separator ISOLDE at CERN allows the production of a wide variety of radionuclides that are delivered in the form of Radioactive Ion Beams (RIBs) to different experimental setups installed in the ISOLDE beam lines. The radionuclides are produced in thick targets bombarded by the pulsed proton beam delivered by the Proton Synchrotron Booster (PSB). During the...
Dr
Yong Joong Lee
(ESS)
12/9/19, 11:25 AM
Oral presentation
The ESS Target Station is designed to convert the 2 GeV protons to a high flux of low energy neutrons for scientific research, at 5 MW beam power. It will start receiving proton beam from the linac for neutron production in 2022. Upon commissioning “beam-on-target,” the linac will deliver protons at 571 MeV, which is lower than the nominal value 2 GeV. During the initial operations phase after...
Mr
Shaohong WEI
(Institute of High Energy Physics, Chinese Academy of Sciences)
12/9/19, 11:50 AM
Oral presentation
A 100 kW solid target was successfully developed for the CSNS phase one. Tungsten was selected as the CSNS target material and a layer of tantalum with a thickness of only 0.3mm as a protective layer. Eleven target blocks were fixed in parallel in a stainless steel target container with 1.2mm gap between each block. Using a specially designed spreader, the target plug can be easily replaced....
Mr
Luca Egoriti
(TRIUMF)
12/9/19, 12:15 PM
Oral presentation
The Isotope Separation On Line (ISOL) method is adopted in several accelerator facilities around the world in order to produce a number of isotopes of interest for a variety of branches of science. At the core of ISOL facilities is a target and ion source assembly which has to withstand extreme temperature conditions and constant particle irradiation, which are both playing a role in the...
Dr
Benjamin Eftink
(LANL)
12/9/19, 2:00 PM
Mr
Phil Earp
(University of Manchester / United Kingdom Atomic Energy Authority)
12/9/19, 2:25 PM
Oral presentation
Titanium alloys such as commercially available Ti-6Al-4V are currently used as the beam window material in the T2K (Japan) proton beam target for neutrino production due to their high specific strength and low thermal expansion coefficient. Thermal spikes from the pulsed beam cause high frequency stress waves with magnitudes well below the yield stress, which subject the component to...
Mr
Ming Jiang
(University of Bristol)
12/9/19, 2:50 PM
Oral presentation
Abstract
High power particle production targets are key for current and future generation accelerator driven facilities, e.g. neutrino beams such as T2K in Japan and the Long Baseline Neutrino Facility (LBNF) at Fermilab. During operation, the target materials will be bombarded by ultra-high energy protons inducing high thermal stresses and radiation damage, compromising their useful...
Dr
Ewart Blackmore
(TRIUMF)
12/9/19, 3:45 PM
Oral presentation
TRIUMF had been operating high intensity proton beams at >100 µA and 480-500 MeV over 40 years for producing pion, muon, neutron, radioactive ion beams and medical isotopes. During this time many radiation damage effects have been observed and measured. The highest fluences are on the meson production targets at about 1023 protons/cm2per year. TRIUMF has several locations for proton...
Dr
Kavin Ammigan
(Fermilab)
12/9/19, 4:10 PM
Oral presentation
The RaDIATE collaboration recently completed a two-phase material irradiation experiment at the Brookhaven Linac Isotope Producer facility at Brookhaven National Laboratory. Various materials of different grades were encapsulated in stainless steel capsules and bombarded with 181 MeV protons for a period of up to eight weeks. However, upon completion of the irradiation campaign, three out of...
Mr
Patrick Hurh
(Fermi National Accelerator Laboratory)
12/9/19, 4:35 PM
Dr
Shin-ichiro Meigo
(J-PARC/JAEA)
12/10/19, 9:00 AM
Oral presentation
For damage estimation of structural materials in the accelerator facility, displacement per atom (DPA) is widely employed as an index of the damage calculated based on the displacement cross section obtained with the calculation model. Although the DPA is employed as the standard index of material damage, the experimental data of displacement cross section are scarce for a proton in the energy...
Dr
Sujit Bidhar
(Fermi National Accelerator Lab)
12/10/19, 9:25 AM
Oral presentation
Titanium alloy Ti6Al4V currently used in beam windows in accelerator facilities are subjected to thermal stresses and high cycle fatigue loading due to intense pulsed proton beam. There materials interacting with beam will also undergo various radiation damage which will affect their endurance limit. Till now there is no fatigue data available for high energy proton irradiated titanium alloy....
Mr
Nicola Solieri
(CERN)
12/10/19, 9:50 AM
Oral presentation
The contribution will provide a status report of the Post Irradiation Examination of the RaDIATE-sponsored CERN2 capsule. The PIE will focus on the Mo-coated samples (MoGR and CfC), including microscopy analysis as well as coating adhesion. Perspectives on the schedule as well as on the other samples will be provided.
David McClintock
(Oak Ridge National Laboratory)
12/10/19, 10:15 AM
Oral presentation
Tensile testing of material from the Spallation Neutron Source (SNS) Target 2 showed abnormally large ductility for a specimen irradiated to approximately 5.4 displacements per atom (dpa). Subsequent electron backscatter diffraction (EBSD) characterization of these tested Target 2 specimens showed deformation-wave behavior from transformation-induced plasticity was responsible for the large...
Mrs
Inbal Gavish Segev
(Soreq)
12/10/19, 11:55 AM
Oral presentation
Proton irradiation damage is a common problem in structural materials at accelerators and nuclear fusion reactors. This damage may result in the degradation of the mechanical properties of structural materials and jeopardize the safe operation of nuclear facilities.
Tungsten and tungsten alloys are utilized as building blocks of nuclear facilities, due to their excellent mechanical and...
Mr
Abraham Burleigh
(Illinois Institute of Technology, Fermi National Accelerator Laboratory)
12/10/19, 12:20 PM
Oral presentation
Neutrino targets are constantly irradiated by high-energy protons to produce secondary particles that decay into neutrinos. Over time, radiation damage effects the macroscopic physical and structural properties of target materials and result in shortened operation lifetimes. The resulting decrease in the material’s thermal shock resistance combined with greater embrittlement results in an...
Dr
Slava Kuksenko
(United Kingdom Atomic Energy Authority)
12/10/19, 12:45 PM
Oral presentation
Beryllium is an essential material for target components material in the currently running (NuMI) and near-future multi-megawatt accelerator particle sources (LBNF), reflectors and moderators in material testing nuclear reactors, plasma facing material (JET, ITER) and potential neutron multiplier (DEMO) for fusion reactor designs, and it is under extensive investigation by fission, fusion...
Mr
Mathew Brownell
(TRIUMF)
12/10/19, 5:00 PM
Poster
The primary function of the TRIUMF’s new Advanced Rare IsotopE Laboratory (ARIEL) is to produce and deliver radioactive ion beams to experiments though two separate target stations. The ARIEL Electron Target East (AETE) station will be used to enable the impinging of an electron driver beam for the production of exotic isotopes and to facilitate their extraction, ionization and acceleration...
Alexander Shkuratoff
(TRIUMF)
12/10/19, 5:00 PM
Fibre-reinforced cyanate ester resin-based composites have been studied and used for applications in high radiation environments such as electrical insulation for magnet coils. Here we explore the composite’s planned use in a unique, large-scale high voltage insulation application; the high voltage feedthrough (HVFT) for the ARIEL target modules. To be discussed are physical properties and...
Ms
Cassidy Donaldson
(TRIUMF)
12/10/19, 5:00 PM
Poster
TRIUMF’s Advanced Rare IsotopE Laboratory (ARIEL) requires a new design of an ISOL target container that approaches an emissivity (ε) of 1, as is achieved at ISAC via cooling fins [1]. ARIEL’s new target geometry precludes the use of cooling fins as a viable option for heat dissipation, leading to exploration of other high-emissivity options. Small-scale (µm) surface modification is considered...
Mr
Fernando Alejandro Maldonado Millan
(UVIC/TRIUMF)
12/10/19, 5:00 PM
Poster
The ARIEL facility at TRIUMF will add two new state-of-the-art target stations to produce radioactive ion beams using the Isotope Separation On-Line (ISOL) method. In the ISOL method, a driver beam impinges a target material creating radionuclides that are ionized and extracted with a high electric field. The driver beam and target interaction cause radiation fields of around $10^9$ Gy/h that...
Mr
Aaron Schmidt
(TRIUMF)
12/10/19, 5:00 PM
Presentation of the various ISAC target ion sources used for the production of Radioactive Ion Beams at TRIUMF along with assembly methods, a quick overview of the SIS (Surface Ion Source) , FEBIAD (Forced Electron Beam Induced Discharge), & IG-LIS (Ion Guide Laser Ion Source) target ion sources, historical data and quality checks & parameters.
Mr
Darwin Ortiz Rosales
(TRIUMF)
12/10/19, 5:00 PM
Radioactive Ion Beam demand often centers around specificity and yield. This has made it necessary for TRIUMF to develop methods for the production of an array of Targets using materials that can best tailor the particular beam and yield demand.
An overview of various ISAC target materials, their current processing methods and quality assurance methodology, as well as some historical data,...
Dr
Johannes Jobst
(Demcon Advanced Mechatronics)
12/10/19, 5:00 PM
Poster
The broad applicability of the gamma-decay of Tc-99m for diagnostic imaging makes it the most widely used medical isotope with forty million patients each year. Due to its short half-life of 6 h, it is produced directly in the hospitals utilizing the decay of Mo-99 to Tc-99m with a half-life of 66 hours. The world-wide demand of Mo-99 is currently provided by neutron-bombardment of highly...
Dr
Dohyun Kim
(Brookhaven National Laboratory)
12/10/19, 5:00 PM
Poster
The array of post-radiation capabilities at BNL that link campaigns at its irradiation facilities (200 MeV Linac/BLIP and Tandem van de Graaff) with characterization of the effects in both the microstructure and the macrostructure will be presented. Emphasis will be given to the recently achieved
Brookhaven, due to decades-long continuous operation of medical isotope production augmented...
Ms
Marla Cervantes Smith
(TRIUMF/UVIC)
12/10/19, 5:00 PM
Poster
For the production of radioactive ion beams with the ISOL method, a target material is irradiated with a high energy driver beam that induces nuclear reactions and produces isotopes. This process consequently leads to the deterioration of the target material.
The characterization of post irradiated target materials provides information about the level of sintering the target material suffers...
Aurelia Laxdal
(TRIUMF)
12/10/19, 5:00 PM
Poster
The TRIUMF 30-75 MeV electron linac has the potential to provide cw beams of up to 0.5 MW to the ARIEL photo-fission facility for rare isotope science. Due to the cooling requirements, the use of a thick Bremsstrahlung target for electron to photon conversion is a difficult technical challenge in this intensity regime. Here, we present a different concept in which electrons are injected into a...
Mr
Louis Moskven
(TRIUMF)
12/10/19, 5:00 PM
Poster
Reliability indexing methods provide a means to combine explicit operational data with structural analysis techniques to better assess the ability of a design to undergo specific loading cases. Load variability can be assessed to add additional limits on the stresses components are able to handle, allowing for a more comprehensive estimate of operational life to be made. In design cases, this...
Aurelia Laxdal
(TRIUMF)
12/10/19, 5:00 PM
Poster
Two AC magnets were installed to scan the 500 MeV proton beam in a circular pattern on the TRIUMF ISAC target.
Rotating a proton beam of reduced width on the ISAC targets contributed to a more homogeneous temperature distribution across the target and enabled the operation at a higher average temperature. Narrower beam rotation resulted in higher local power density, which enhanced the...
Prof.
Mauricio Ponga
(The University of British Columbia)
12/11/19, 9:00 AM
Oral presentation
Controlling microstructural features in crystalline materials is one of the keys to achieving materials that combine mutually exclusive properties, such as strength and toughness. In this presentation, I will show the efforts made in my group to understand the generation of gradient nano-grained (GNG) structures in metallic materials under several manufacturing methods, including the impact of...
Mr
Shunsuke Makimura
(KEK, J-PARC)
12/11/19, 9:25 AM
Oral presentation
J-PARC (Japan Proton Accelerator Research Complex) consists of a series of world-class proton accelerators and the experimental facilities that make use of the high-intensity proton beams. Recently, higher intense proton beams are requested due to requirement of further physics research. However, the upgrade of the intensity is dominated by the target technologies.
Tungsten (W) is a principal...
Michael Moorehead
(University of Wisconsin-Madison)
12/11/19, 9:50 AM
Oral presentation
High-entropy alloys (HEAs) have become the focus of research in many fields often exhibiting unique thermal, mechanical, chemical, and electrical properties. In addition to this, several HEAs have been shown, in both modeling and experiments, to exhibit enhanced resistance to radiation damage. While several theories have been proposed to explain this behavior, often owing to the chemical...
Taku Ishida
(J-PARC)
12/11/19, 10:15 AM
Oral presentation
An &alpha+&beta dual-phase titanium alloy Ti-6Al-4V (ASTM Grade 5 or its Extra Low Interstitial grade 23) is widely utilized as the beam window material for high-intensity particle accelerators, because of its low density and high specific strength. However, it is known that proton beam irradiation with only 0.1 dpa-NRT rapidly initiates radiation-induced hardening and loss of ductility....
Dr
Ram Devanathan
(Pacific Northwest National Laboratory)
12/11/19, 11:30 AM
Oral presentation
We present an overview of computer simulation methods used to study radiation damage from the atomic to the continuum scale. Within the framework of multiscale materials modeling, the study of irradiation damage and associated materials property degradation has required modifications tailored to the application. Particle irradiation damage in accelerator targets begins at the nanometer scale...
Dr
Sujit Bidhar
(Fermi National Accelerator Lab)
12/11/19, 11:55 AM
Oral presentation
Some of the NT02 target fin made up of isotropic POCO graphite grade has developed crack and fractured after few years of operation. The highly energetic pulsed proton beam with small beam sigma would create thermal stress wave as well as radiation damage such as displacement damage, void formation, swelling, gas formation among few. A complex interaction of dynamic loading due to beam,...
Yosuke Iwamoto
(Japan Atomic Energy Agency)
12/11/19, 12:20 PM
Oral presentation
The displacement per atom (dpa) value is widely used for the index of radiation damage in materials under high energy proton irradiation. It is possible to calculate dpa values using the screened Coulomb scattering theory for incident proton-nucleus collisions and the nuclear reaction model for nuclear reaction product-nucleus collisions in the high-energy region (>10 MeV). For defect...
Dr
Marco Calviani
(CERN)
12/12/19, 9:00 AM
Oral presentation
The current contribution will detail a Post Irradiation Examination (PIE) on a spent antiproton production target (AD-target), which has been irradiated for around 10 years in the AD machine. The iridium core is estimated to have been irradiated up to 5 DPAs. The cutting procedure has well as all the measurements executed on the samples will be discussed as well as the path forward to other...
Mrs
Emily Abel
(Michigan State University)
12/12/19, 9:25 AM
Oral presentation
In preparation for isotope harvesting with a water-filled beam dump at the Facility for Rare Isotope Beams (FRIB), a flowing-water target connected to an isotope harvesting water system has been created and used in preliminary experiments. The target shell was made with a Ti64 alloy through additive manufacturing to reflect the material that is planned for the FRIB beam dump. Experiments with...
Dr
Katharina Domnanich
(NSCL, MSU)
12/12/19, 9:50 AM
Oral presentation
The harvesting of rare isotopes at the National Superconducting Cyclotron Laboratory (NSCL) is accomplished by the deposition of heavy ion beams in a water filled beam blocker. With the dissipation of such large amounts of energy, not only a plethora of radionuclides is formed, radiolysis reactions are induced as well. The thereby created various radiolytic products can either react with each...
Dr
Mark Palmer
(Brookhaven National Laboratory)
12/12/19, 10:15 AM
Oral presentation
Several super-alloys in the mid-Z range have been explored as targets for pion production to enable high-intensity neutrino sources. These allows have included Inconel-718, super-Invar, the Gum multi-functional alloys and the α+β titanium alloy Ti-6Al-4V.
In this presentation the phase stability of the Ti-6Al-4V following irradiation with 140 MeV protons at the Brookhaven Linac Isotope...
Dr
David Senor
(Pacific Northwest National Laboratory)
12/12/19, 11:30 AM
Oral presentation
Currently titanium alloys are used as beam windows in several accelerator facilities due to favorable beam interaction properties, high tensile strength, and high fatigue strength. The T2K neutrino beam-line currently uses the alpha+beta alloy Ti-6Al-4V as the material for its primary beam window and target beam window. Planned upgrades to the accelerators to 1.3 MW will require pushing the...
Dr
Andy Casella
(PNNL)
12/12/19, 11:55 AM
Oral presentation
Beryllium is currently of interest for use in beam-intercepting devices. As such, samples of multiple beryllium grades (PF-60, S-65F, S-200F, S-200FH, and ultra-high purity) were irradiated in the RaDIATE BLIP irradiation and subsequently shipped to PNNL for post irradiation examination. To date, dimensional measurements of irradiated samples and tensile tests of irradiated and unirradiated...
Mr
Ferran Boix Pamies
(TRIUMF)
12/12/19, 12:20 PM
Oral presentation
ISAC-TRIUMF operates targets under proton irradiation in the high-power regime of 50 kW to produce radioactive isotope beams using the ISOL method. During irradiation, high-energy protons passing through the ISOL target are available for studies of radiation damage in materials. Additionally, the existing hot-cell capabilities for the routine maintenance of target components allow immediate...
Dr
Antonio PERILLO MARCONE
(CERN)
Oral presentation
During the last two years, a wide range of analyses were performed on different beam intercepting devices at CERN, including numerical simulations, proton-beam impacts at HiRadMat and different post-irradiation examinations. The contribution will focus on new observations related to three recent experiments, one associated to LHC collimator materials and other two more related to targetry...
