Dr
Nikolaos CHARITONIDIS
(CERN)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
The development of high-power targets constitutes a key R&D activity for future facilities presently under study like the Neutrino Factory, the Muon Collider or the upgraded high-power super beams for long-baseline neutrino experiments. The choice of materials to sustain the proposed beam power ranging up to (Multi-) MW levels is not trivial. Granular solid targets have been proposed and are...
Dr
David McClintock
(Oak Ridge National Laboratory)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
It has long been recognized by the nuclear materials research community that facilities suitable for irradiation studies relevant to envisioned fusion power systems are lacking. Therefore, efforts are underway at the Spallation Neutron Source (SNS) to design an irradiation facility at the beam entrance region of the SNS target module for materials science research in support of fusion energy...
Prof.
Kirk McDonald
(Princeton University)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
We describe a solenoid capture system suitable for producing an intense muon beam for eventual injection into either a neutrino factory storage ring or a muon collider ring. This arrangement allows for the capture and transport of muons of both charge states. An initial configuration featuring a low-Z solid target is envisioned for a 1-MW proton driver beam, while maintaining an upgrade path...
Davide Bernardi
(ENEA)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
In the framework of European fusion activities, a high flux neutron source is considered an essential device for testing candidate materials under irradiation conditions typical of future fusion power reactors. To this purpose, IFMIF (International Fusion Materials Irradiation Facility) project represents an important option to provide the fusion community with a source capable of irradiating...
Dr
Angel Ibarra
(CIEMAT), Dr
Davide Bernardi
(ENEA), Dr
Francesco Saverio Nitti
(ENEA), Dr
Friedrich Groeschel
(Karlsruher Institut fuer Technologie), Mr
Gioacchino Miccichè
(ENEA)
20/05/2014, 17:30
Target Facility Simulation Challenges
Poster Presentation
The main requirement for an efficient and safe operation of the IFMIF plant is the stability of the Li jet. The stability is related to the thermohydraulic behaviour and can be affected by the beam–target interaction. The waviness of the jet must stay within rather narrow limits to protect the backwall from beam impact and to maintain stable irradiation conditions in the test modules. Thermal...
Dr
Viacheslav Kuksenko
(Paul Scherrer Institute/University of Oxford)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
Ferritic-martensitic steel F82H was irradiated in a mixed proton-neutron spectra in the Swiss spallation neutron source SINQ up to 20.3 dpa at 345°C. Atom Probe Tomography (APT) investigations were performed in order to study the atomic scale evolution of the microstructure of the F82H steel under irradiation.
The irradiation led to the production of about 370 appm of Ca, 90 appm of Sc and...
Andrew Atherton
(STFC RAL),
Brian Hartsell
(FNAL), Dr
Kavin Ammigan
(Fermi National Accelerator Laboratory)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
Beryllium is currently widely used in various accelerator beam lines and target facilities as material for beam windows, and to a lesser extent, particle production targets. With plans to increase beam intensities in future accelerator facilities, such as the PIP-II driven Long Baseline Neutrino Experiment (LBNE) at Fermilab, it is essential to take full advantage of the high...
Ms
Valentina Venturi
(CERN)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
The design of the target assembly for the proposed CENF neutrino facility is a challenging task due to the very strict physics requirements. The material chosen for the target is graphite, while a beryllium double pipe configuration is foreseen for the external containing structure. The assembly must be supported in cantilever and has to fully fit inside a focusing horn featuring a very narrow...
Dr
Jong-Won Kim
(Institute for Basic Science)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
A graphite target system to produce rare isotope beams using in-flight fragmentation method has been designed for the rare isotope science project in Korea. A main primary beam to bombard the target is 238U in the energy of 200 MeV/u with the maximum power of 400 kW, in which beam power deposit on the target amounts up to 100 kW. A multi-slice target concept was adopted to enhance the...
Keith Woloshun
(Los Alamos National Lab)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
99mTc, the daughter isotope of 99Mo, is the most commonly used radioisotope for nuclear medicine in the United States. Under the direction of the National Nuclear Security Administration (NNSA), Los Alamos National Laboratory (LANL) and Argonne National Laboratory (ANL) are partnering with NorthStar Medical Technologies to demonstrate the viability of large-scale 99Mo production using electron...
Mr
David Wootan
(Pacific Northwest National Laboratory)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
Well-developed methodologies have been extensively applied to predicting radiation damage in materials for the neutron irradiation environments typically encountered in reactor test irradiations. Decades of reactor experience have resulted in standardized methods. An example is the ASTM standard dpa cross section for iron based reactor materials based on the traditional NRT-dpa model. ...
Ryan Schultz
(Fermilab)
20/05/2014, 17:30
Target Facility Simulation Challenges
Poster Presentation
Lithium Collection Lenses were used to collect anti-protons for decades during the Tevatron collider run at Fermilab. This investigation looks at using the same Lithium Lens design for future use for muon production during the g-2 experiment at Fermilab; where thermal loading is much less per pulse, but the repetition rate is much higher. A transient ANSYS analysis was performed comparing the...
Dr
Lucia Popescu
(SCK-CEN)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
Worldwide several efforts are underway to increase the intensities of radioactive ion beams at an ISOL facility by several orders of magnitude. One of the approaches is based on increasing the power of the primary beam on target. For this, issues have to be solved on target design and target material, which should be capable of withstanding reliably high beam-power deposition over long periods...
Mr
Drew Winder
(Oak Ridge National Laboratory)
20/05/2014, 17:30
Target Facility Simulation Challenges
Poster Presentation
The Spallation Neutron Source at the Oak Ridge National Laboratory produces neutrons by striking a target containing mercury with a pulsed proton beam. Examination of used targets shows that the innermost surface of the vessel where the proton beam strikes has a significant amount of damage due to mercury cavitation. The target also has an outer thin window flow channel which does not show...
Brian Hartsell
(FNAL)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
The Long Baseline Neutrino Experiment (LBNE) will utilize a proton beamline at Fermilab with 1.2MW power on target in the baseline configuration. A graphite target concept using a scaled version of the IHEP low energy target design was chosen to fulfill the design criteria. The proton beam was enlarged to a 1.7mm beam sigma compared to the 1.1mm beam sigma the IHEP LE target was originally...
Ms
Jana R. Fetzer
(Karlsruhe Institute of Technology (KIT))
20/05/2014, 17:30
Target Facility Simulation Challenges
Poster Presentation
A Lead-bismuth cooled accelerator driven system (ADS) is considered as a promising option for the transmutation of long lived nuclear waste into short lived or stable isotopes. In this type of reactor a subcritical core is used receiving the required neutrons for the nuclear reaction by spallation using a high power proton beam from an accelerator. At the entry point of the reactor pool where...
Thomas Shea
(ESS)
20/05/2014, 17:30
Target/Beam Monitoring & Instrumentation
Poster Presentation
The ESS linear accelerator will deliver a 5 MW, low-emittance proton beam directly to the target station. To limit power density, a transport line expands this beam to centimetre scale and rasters this expanded beam across the target surface. This technique produces a reasonably uniform current density that enables a five year service life for the rotating tungsten target and a 6 month service...
Dr
Theodor Asavei
(ELI-NP)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
The ELI-NP (Extreme Light Infrastructure -Nuclear Physics) facility, currently under construction in Magurele, Romania, will make possible experiments with high power lasers with peak powers of 100 TW, 1PW and 10PW.
One of ELI-NP research direction will focus on the field of materials in high radiation fields, temperature and pressure conditions, taking advantage of the ultrashort time scales...
Mr
Michael Campbell
(FNAL)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
The CD-2 conceptual design for the Mu2e production target remote handling system will be a robotic machine that is capable of performing the target exchange autonomously. After entering the target hall from the side through a sliding/shielded door, the robot is being designed to perform the following tasks: locate and remove the target access window from the end of the vacuum chamber, place...
Dr
Vitaly Pronskikh
(Fermilab)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
One of the main parts of the Mu2e experimental setup is its Target Station in which negative pions are generated in interactions of the 8-GeV primary proton beam with a tungsten target; a large-aperture 5-T superconducting production solenoid (PS) enhances pion collection. The heat and radiation shield (HRS) is a 33 ton water-cooled bronze shield which protects the PS coils and the first TS...
Mr
Christian Hubert
(TU-Darmstadt / GSI Helmholtzzentrum für Schwerionenforschung)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
Operation under intense radiation damage conditions and thermo-mechanical loads is common for both targets and beam protection components for high power particle accelerators like FAIR (Facility for Antiproton and Ion Research) which is currently under construction in Darmstadt, Germany. To ensure safe operation and less frequent maintenance shut-down’s related to beam catchers and targets,...
Mr
Patrizio Console Camprini
(ENEA National Agency for New Technologies, Energy and Sustainable Economic Development)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
Within the framework of fusion technology research and development, a neutron source has long been considered a key facility to perform irradiation tests aiming at populating materials engineering database – supporting DEMO reactor design and licensing. New Sorgentina Fusion Source (NSFS) has been proposed taking advantage of well-established D-T neutron generators technology, properly scaled...
Dr
Ido Silverman
(Soreq)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
A prototype of a compact Liquid Lithium Target (LiLiT), able to constitute an intense accelerator-based neutron source was successfully tested for the first time with an intense 1.9 MeV, 1.3 mA (~2.5 kW) continuous-wave proton beam. The high-power liquid-lithium target is designed to produce neutrons through the 7Li(p,n)7Be reaction and to overcome the major problem of removing the thermal...
Mr
Robert Gates
(Pacific Northwest National Laboratory)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
In this presentation, PNNLs work on structural analysis, material selection and fabrication issues associated with the energy deposition of proton beams in representative windows and targets will be explored. Strategies to improve the survival of beam window and target designs under challenging energy deposition rates will be discussed. High power beam parameters can induce very high thermal...
Dr
David Senor
(Pacific Northwest National Laboratory)
20/05/2014, 17:30
Radiation Damage and Material Limits
Poster Presentation
The Pacific Northwest National Laboratory has a number of facilities and capabilities that are relevant to post-irradiation examination of high power accelerator target and window materials such as graphite, beryllium, and Ti-base alloys. The Radiochemical Processing Laboratory contains a variety of shielded hot cell facilities routinely used for cask handling, experiment disassembly, visual...
Mr
Colin Souza
(Science and Technology Facilities Council), Mr
Stephen Gallimore
(Science and Technology Facilities Council)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
From the original vision over 30 years ago, ISIS has become one of the UK’s major scientific achievements. It is a world-leading centre for research in the physical and life sciences at the STFC Rutherford Appleton Laboratory near Oxford in the UK. The suite of neutron and muon instruments gives unique insights into the properties of materials on the atomic scale. ISIS supports a national and...
Dr
Claudia Strabel
(CERN)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
A short-baseline CERN Neutrino Facility (CENF) has been proposed in which a high-intensity 100 GeV proton beam with a beam power of up to 200 kW will be directed to a new fixed target complex in the North Area of the CERN Prévessin site. The target complex will be located underground at a depth of 15 m and contains, in addition to the production target itself, a focusing system, a decay tunnel...
Dr
Diane Reitzner
(FNAL)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
The Long Baseline Neutrino Experiment (LBNE) will deliver a
high intensity neutrino beam from Fermilab to a
detector 1300 km away in South Dakota. The neutrino beam will be produced from the decays of pions and kaons generated
from a 120 GeV proton beam incident on a 95 cm long graphite target.
To operate this facility over a twenty year period at a proposed 2.3 MW beam power requires...
Mr
Gianni Tassotto
(FNAL)
20/05/2014, 17:30
Target/Beam Monitoring & Instrumentation
Poster Presentation
Profile Monitors providing precision measurement of beam profile distributions are essential for transport and targeting of high intensity proton beams. We describe here the SEM grid monitors developed for the 0.4 – 0.7 MW NuMI proton beam, along with the development process leading to the current monitor design. We also provide details of their utilization in the NuMI beam, along with...
Federico Carra
(CERN)
20/05/2014, 17:30
Target Facility Simulation Challenges
Poster Presentation
In recent years, state-of-the-art numerical methods, involving the use of Autodyn and LS-Dyna wave propagation codes, have been developed at CERN and at Politecnico di Torino in order to simulate the impact of a particle beam on solid accelerator devices such as collimators, windows, targets, dumps and absorbers. These methods were adopted by the authors in 2011 to analyze the consequences of...
Dr
Klaus Knie
(GSI)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
In the future FAIR facility at GSI in Darmstadt, Germany, a multitude of experiments with an antiproton beam is foreseen. It is planned to produce these antiprotons in a collision of a primary proton beam with a metal target. A Ni rod will be bombarded with a pulsed beam of 29 GeV protons with an intensity of 2.5E13 ppp and a repetition rate of 0.2 Hz. Directely after the target the...
Mr
Dan Wilcox
(RAL)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
A conceptual design is presented for the target station and remote handling system of a multi-MW neutrino facility. This was originally developed for the EUROnu Super Beam study, which proposed a 4MW beam delivered to 4x 1MW pebble-bed targets operating in parallel. The target station was designed to cope with the unique demands of this 4 target arrangement, as well as challenges such as high...
Dr
Bob Zwaska
(Fermilab)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
We present the concept for a target material comprised of a multitude of interlaced wires of small dimension. The wires will be made of a thermal-shock resistant material, but will not be subject to stress accumulation due to their small size. The intrinsic bends of the wires will allow them to absorb the strain of thermal shock with minimal stress. The bulk of this material will have a...
Mr
Katsuhiro Haga
(Japan Atomic Energy Agency)
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
Cavitation damage of the target vessel wall which is caused by the pressure wave in mercury induced by the pulsed high power proton beam injection is the crucial issue for the development of the high power mercury target. Based on the analytical and experimental studies and also on the operational experiences of SNS, the effect of the rapid mercury flow to mitigate the cavitation damages seems...
Prof.
Toshikazu Kurihara
(High Energy Accelerator Research Organization (KEK))
20/05/2014, 17:30
Target Design Challenges
Poster Presentation
An accelerator-based BNCT (Boron Neutron Capture Therapy) facility is being constructed at the Ibaraki Neutron Medical Research Center, Japan. It consists of a proton linac of 80kW beam power with 8 MeV energy and 10mA average current, a beryllium target, and a moderator system to provide an epi-thermal neutron flux enough for patient treatment. The technology choices for this present system...
Dr
Diane Reitzner
(FNAL)
20/05/2014, 17:30
Target Facility Challenges
Poster Presentation
The production of tritium is a radiological concern in the operation of the Long Baseline Neutrino Experiment (LBNE) beamline. This
experiment aims to send a high intensity neutrino beam from Fermilab to a detector located approximately 1300 km away in South Dakota. The high power 120 GeV proton beam incident on a 95 cm graphite target will produce significant amounts
of tritium in and...
Dr
Nicholaos Tsoupas
(BNL)
20/05/2014, 17:30
Target/Beam Monitoring & Instrumentation
Poster Presentation
As part of the Accelerator Driven Subcritical Reactor project at BNL, high power beams are crucial to increase the neutron production of the spallation target. To minimize the stresses on the target and on the vacuum window, which separates the optical elements of the beam delivery system from the target region, we propose to expand the beam and uniformly distribute it over the target area....