There are multiple ongoing contributions to the RaDIATE materials science program from universities and public sector research establishments across the UK. Initial funding via the Hyper-K–UK project kick-started academic materials science projects, with new and outstanding research now being supported by the LBNF-UK project.
UK activities are co-ordinated by STFC at Rutherford Appleton...
The presentation will cover the developments that have taken place on post-irradiation examination activities that have taken place at CERN since the last collaboration meeting.
It will cover:
- Wrap-up of PIE activities for the CERN2 BLIP capsule
- Results of PIE on Sigraflex specimens extracted from the LHC beam dump autopsy
- Preliminary results from PIE of HiRadMat-RaDIATE...
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, irradiation damage and thermal shock in the target, beam window, and other beam-intercepting...
With the projected increase in beam intensities at forthcoming multi-megawatt accelerator facilities, it is crucial to address the challenges posed by greater thermal stress waves and dynamic loads experienced by beam intercepting components like beam windows and targets. Additionally, these components are susceptible to radiation damage, which can significantly impact their operational...
X-ray scattering techniques coupled with the world-class brightness of the National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory (BNL) enable exceptional opportunities for non-destructive studies of nuclear materials such as uranium alloys. Materials for Energy Applications group at Nuclear Science & Technology Department at BNL partners with 28-ID-2 beamline (XPD)...
The efficiency of the isotope production process relies critically on the accuracy of the underlying nuclear data. Knowledge of nuclear excitation functions is particularly important for prediction and optimizing irradiation yield and radionuclidic purity of the desired radioisotope. This work is part of US DOE Isotope Program initiated joint effort between BNL, LANL and LBNL to address...
The Brookhaven Linac Isotope Producer (BLIP) facility at Brookhaven National Laboratory routinely irradiates targets, using a proton beam of incrementally tunable energy (66-200 MeV) and intensity (up to 170 µA), for the creation of a host of radioisotopes for use in medical applications. During irradiation of these targets, secondary neutrons are generated by proton-induced reactions and...
The Second Target Station (STS) at Spallation Neutron Source (SNS) will receive 700 kW proton beam with a very low duty cycle based on a microsecond long pulse with 15 Hz repetition rate. The beam intercepting materials exposed to the high-power proton beam will suffer from long-term radiation damages, including material hardening due to displacement damage, material embrittlement and swelling...
We present post irradiation examination (PIE) results of a piece of fractured POCO ZXF-5Q graphite fin that was extracted from the NuMI beamline of U.S. FermiLab. This piece of specimen has been irradiated by 340 kW, 120 GeV pulsed protons for producing neutrinos for MINOS/MINERvA high energy physics experiment use. PIE was conducted on this specimen using a novel approach with micro-Raman...
The material damage index of displacement per atom (dpa) is obtained by the particle flux and the displacement cross section. However, the experimental data of the displacement cross section was scarce. The measurements using proton beams were conducted, and so far, the experimental data of protons up to 30 GeV have been obtained in J-PARC and other Japanese facilities. The displacement cross...
High-Entropy Alloys and Electrospun Nanofiber materials are two novel classes of materials that can offer improved resistance to beam-induced radiation damage and thermal shock. Research to develop these new materials specifically for multi-megawatt accelerator target applications, such as beam windows and particle-production targets, has recently begun. The research program will combine...
Targets and beam windows are currently the limiting factors for beam power and runtime for high energy particle accelerators. Thermal shock and fatigue are the primary modes of failure for these components, which is accelerated by irradiation damage from the beam. To achieve the desired increase in beam power and runtime, new materials need to be explored and studied. High Entropy Alloys...
Beam power and runtime in high energy particle accelerators are currently limited by targets and beam windows. The existing materials used in these components have reached their maximum potential, necessitating the development of a new class of materials known as high entropy alloys (HEAs) to overcome this challenge. Numerous studies have demonstrated that HEAs possess exceptional qualities...
The High Power Targetry Research and Development (HPT R&D) Group at Fermi National Accelerator Laboratory (FNAL) has been investigating a novel target concept which has the potential to withstand high intensity primary beams: a target consisting of electrospun ceramic nanofibers. If successful, these exciting new targets could support the next generation of neutrino facilities, and could have...
The Facility for Rare Isotope Beams (FRIB) is a heavy ion accelerator facility aiming to reach 400-kW primary beams, which will extend the heavy-ion accelerator power frontier by more than one order of magnitude. FRIB’s superconducting radio frequency (SRF) continuous-wave heavy-ion linear accelerator can accelerate all the ions up to uranium to energies above 200 MeV/u. The design beam power...
The Second Target Station (STS) of the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory is currently in the preliminary design phase where extensive research and development is ongoing in support of the progressing target design. Short pulse spallation targets like SNS require an understanding of high cycle fatigue behavior due to the repeated thermal shock from the proton...
The Long Baseline Neutrino Facility (LBNF) Project, currently under final design, will deliver neutrino beam to the Deep Underground Neutrino Experiment (DUNE) utilizing 120 GeV proton beam on a graphite target at 1.2 MW in 2031 and up to 2.4 MW by 2036. The LBNF neutrino beamline utilizes several beam intercepting devices that are being designed and built to withstand the cyclic thermal shock...
Since the last RaDIATE meeting in September 2022, PNNL has continued work on characterizing the samples from the BLIP irradiation experiment. Beryllium bend bar testing has been completed, titanium results have been organized, and SiC-coated graphite sample microscopy has been completed. Efforts regarding all three material investigations are at the point in which publication drafts are...
Center for Functional Nanomaterials (CFN) is a DOE Scientific User Facility that provides access to state-of-the-art material characterization and synthesis tools to a scientific community. In this talk I will give an overview of the CFN user program and discuss how the facility can be accessed by external users. I will describe available instrumentation and capabilities relevant to material...
The National Synchrotron Light Source II (NSLS-II) at Brookhaven National Laboratory thrives at delivering world-class x-ray capabilities for studying complex and heterogeneous materials. NSLS-II’s beamlines and experimental stations offer unique, cutting-edge research tools, enabling in-situ, operando & extreme environments studies, as well as high throughput and real-time observations....
The proposed High Energy Effects Test (HEET) facility will be designed to support the needs of the space electronics testing community. It will have high energy reach as well as simulate solar proton events and galactic cosmic rays. I will describe the community needs and the current set of facilities supporting the community and the HEET proposal.
