At the European Spallation Source (ESS), a number of research projects on irradiated materials are undergoing in collaboration with other leading accelerator labs. The research program includes post irradiation examination (PIE) of tungsten as spallation material, in-beam characterization of chromium doped alumina as luminescent coating material, chemical kinetics of selected catalyzers for...
In this presentation I will introduce operational status of the J-PARC Neutrino Experimental Facility and upgrade plan of the facility to 1.3MW for Hyper-Kamiokande project.
Overview of the status of the Facility for Rare isotope Beam (FRIB)
In order to predict the irradiation effects in the MQXF quadrupoles in view of HL-LHC at CERN during operation up to a luminosity of 4'000 fb-1, an irradiation program was carried out on industrial, Ta and Ti added Nb3Sn wires. Wire samples from the same batch were irradiated with high energy protons (65 MeV and 24 GeV, up to 1.4 × 1021 p/m2) and neutrons (1 MeV, up...
Understanding and predicting the effects of irradiation on complex alloys such as structural “ferritic” steels used in fission and fusion reactors is a tremendous and complex challenge. Irradiations performed in experimental irradiation facilities always deviate to some extend from the irradiation conditions existing in nuclear reactors. For instance, the neutron spectrum can be different but...
STIP irradiation experiments have been conducted in the targets of SINQ (the Swiss Spallation Neutron Source) since 1996, which been the unique irradiation experiment in spallation target irradiation environments in the world. Seven irradiation experiments were performed during 1996 and 2014 and more than 8000 specimens from several tens kinds of materials were irradiated to doses as high as...
Advanced micromechanical testing techniques of irradiated materials and the ability to predict the bulk mechanical properties from small scale experiments
BLIP’s energetic proton beams can be used to explore the effects of radiation on
novel materials under consideration for next generation nuclear reactors and high-power particle accelerators. By studying how proton irradiation affects materials (including different grades of beryllium and graphite, carbon fibers
and silicon-carbon fiber composites, and super alloys and steels), and assessing...
A summary of ion irradiation facilities will be provided, including the UK National Ion Beam Centre. Facilities from around Europe and the USA will be summarised. Indication will be given on the facilities available at example facilities and where possible (within time and space constraints) some examples will be provided. According to the IAEA Accelerator Knowledge Portal There are over 200...
Materials exposed to radiation can undergo undesirable changes, including radiation-induced swelling and creep, hardening, amorphization, phase segregation, and radiation-enhanced corrosion. At the fundamental level these changes are driven by defects that can aggregate into clusters and dislocations and segregate to interfaces, such as grain boundaries. The nature and dynamics of these...
It is proposed to develop a more efficient method to evaluate radiation damage effects on fatigue life and mechanical/physical properties of future target materials using an existing 9 MeV electron beam machine at Fermilab’s IARC facility. This method is unique in that it replicates the prototypic thermal shock environment of high energy proton target facilities while simultaneously...
Staff members at PNNL have conducted numerous neutron irradiation experiments at research and test reactors in the US and overseas. Many of these experiments were conducted in support of programs that are subject to commercial nuclear quality assurance requirements (NQA-1 or 10 CFR 50 Appendix B). While this degree of quality assurance rigor may not be appropriate for proton irradiation...
Three capsules containing Ti-base alloys were irradiated as part of the proton irradiation experiment organized by the RaDIATE Collaboration at the Brookhaven Linac Isotope Producer (BLIP). The downstream Ti-1 capsule was opened at PNNL in spring 2018, the upstream Ti capsule was opened at PNNL in fall 2018, and the downstream Ti-2 capsule will be shipped to PNNL from BNL in spring 2019. ...
Antiprotons are produced by colliding a pulsed 1.5*1013 proton per pulse proton beam of 26 GeV/c momentum from CERN Proton Synchrotron (PS) with a fixed target made of a dense and high-Z material: iridium. In the framework of the Extra Low Energy Antiproton Ring (ELENA) project, in order to address specific requirements for the new designs and operational procedures, a deep understanding of...
During operation, the mechanical properties of the 316L stainless steel target module at the Spallation Neutron Source (SNS) are altered, and the vessel surfaces are damaged by cavitation-induced erosion. The mechanical properties of other high-dose components, such as the proton beam window, are also affected by radiation during operation, which limit their useful lifetimes. A robust post...
Analysis of the conditions on the window while in-service.
Mechanical analysis of the window.
Possible irradiation effects contributing to the window failure.
Upcoming physical testing of the irradiated and un-irradiated window material.
In the framework of the Extra Low Energy Antiproton Ring (ELENA) project, a new upgrade of the CERN AD facility is planned, including the replacement of the actual AD-target. Dynamic stresses take place in target materials as a consequence of the sudden increase of temperature after each pulse, leading to their potential failure. In this context, the two HRMT-27 and HRMT-42 experiments have...
BDF target: beam tests and material R&D
The development of new target materials toward the increase of the beam intensity of high power proton accelerators has been progressed. Polycrystalline graphite is a principal target material for high power proton accelerator. Graphite has extremely high performance for these applications due to its thermal properties, mechanical properties, and chemical stability. However, graphite is easily...
This presentation will introduce the current status on advanced materials development activities for neutron- and muon-production target applications in MLF (Material and Life Science Facility) 2nd Target Station at J-PARC (Japan Proton Accelerator Research Complex) which will be submitted as a next master plan to Science Council of Japan.
Tungsten (W) is a principle candidate as target...
Irradiation of coated low-Z absorbing materials for the Target Dump Internal (TDI) and SiC-SiC irradiation in the HiRadMat-35 experiment
C. Bahamonde, J. Maestre and I. Lamas
Department EN-STI-TCD, CERN, Switzerland
Abstract
The Large Hadron Collider (LHC) collimator system is one of the main contributors to the total impedance budget of the LHC machine. The Target Dump Internal (TDI) is a...
This talk will present recent High Radiation to Materials experiments run at CERN, and describe their motivations. A focus on the PIE, and the related outputs useful for beam intercepting devices will be given.
