Anthony Leveling
(Fermilab)
28/04/2014, 09:25
The Fermilab Antiproton source is to be repurposed to provide an 8 kW proton beam to the mu2e experiment by 1/3 integer, slow resonant extraction. Shielding provided by the existing facility must be supplemented with in-tunnel shielding to limit the radiation effective dose rate above the shield in the AP30 service building. In addition to the nominal radiation shield calculations, radiation...
Robert Cooper
(Indiana University)
28/04/2014, 11:00
Low energy neutrinos (E < 50 MeV) have a predicted, but unobserved, coherent elastic scattering channel on nuclei. Coherent neutrino scattering has important physics reach for supernovae, standard model tests, and nuclear physics. The CENNS collaboration will deploy a liquid argon detector in a far off-axis configuration at the Booster Neutrino Beam (BNB) in order to produce a flux of...
Francesco Paolo La Torre
(CERN)
28/04/2014, 11:25
Several samples of materials used for accelerator components and shielding structures were irradiated in the high-energy stray radiation field of the H4IRRAD facility, one of the secondary beam lines (H4) from the SPS at CERN. After irradiation, the induced radioactivity of the samples was measured by gamma spectrometry at various cooling times up to 2 years, allowing identification of...
Mikhail Kostin
(Facility for Rare Isotope Beams (FRIB), Michigan State University)
28/04/2014, 11:50
The Facility for Rare Isotope Beams (FRIB) at Michigan State University is a project jointly funded by the US Department of Energy and Michigan State University with the construction scheduled to start in March 2014. This accelerator facility will provide a broad range of ion beams from 18-O to U with a beam power of up to 400 kW and energy of 200 MeV/u for U in its baseline configuration. A...
Roberto Versaci
(ELI-Beamlines)
28/04/2014, 14:05
ELI-Beamlines is one of the four pillars of the Extreme Light Infrastructure, a European ESFRI Project, for the next generation of
high energy and high intensity lasers.
It aims at the development of high-brightness sources of X-rays and at
the acceleration of proton, electron, and ion beams, to be used both for
pure research and practical applications.
Aiming at a proper radiation...
Bruce C. Brown
(Fermilab/Accelerator Div/Main Injector Dept)
28/04/2014, 15:15
In conjunction with efforts to predict residual radiation levels, measurements of residual radiation were correlated with the time history of losses. Detailed examination suggested that the list of radioactive isotopes used for fitting was incomplete. We will report on activation studies of magnet steel and copper samples which we irradiated adjacent to the Fermilab Main Injector collimation...
Peter Katrík
(Technische Universität Darmstadt)
28/04/2014, 15:40
The activation of the high-energy heavy ion accelerators due to beam-losses is a serious issue for parts of accelerator as collimator systems, magnets, beam-line, fragment separator targets, etc. The beam-losses below 1 W/m are considered as a tolerable for “hands-on” maintenance on proton machines. In our previous studies FLUKA2008 code has been used for establishing a scaling law expanding...
Sangjin Lee
(Institute for Basic Science)
28/04/2014, 16:05
LENS is a novel, long pulsed neutron source located in the Center for Exploration of Energy and Matter (CEEM) of Indiana University and RAON is a heavy-ion accelerator complex that is being constructed in Korea. NREF at LENS utilizes a low energy p-N reaction between Beryllium target and a high-current, variable-pulse-width proton beam to produce Quasi monochromatic high flux neutron beams...
Daniela Kiselev
(Paul Scherrer Institut)
28/04/2014, 16:30
The Paul Scherrer Institut operates a MW-class spallation source, SINQ, using the 590 MeV proton beam delivered by the ring cyclotron, HIPA. The target of the spallation source consists of a bundle of lead filled metal tubes (cannelloni). Five lead samples were extracted from a rod in the target center close to the beam entry window from SINQ target-4, which had been in operation in 2000/2001...
George Kharashvili
(Jefferson Lab)
28/04/2014, 16:55
Activation of materials impacted by GeV electron beams is of great importance for the purposes of radiation protection as well as future decommissioning. In order to measure thin and thick target activation Al, Pb, Nb, Cu, and stainless steel foils (0.01 – 0.1 mm) were placed upstream and downstream of 1.25-cm thick tungsten alloy blocks and irradiated by 2.25 and 3.36 GeV electron beams. The...
Benjaminas MARCINKEVIČIUS
(Center for Physical Sciences and Technology, Lithuania)
28/04/2014, 17:45
European Spallation Source (ESS) is next generation research facility for dynamics and material structure studies. It is common European project taking place in Lund, Sweden. Spallation reaction will be produced in helium cooled tungsten target by pulsed (50 Hz pulse length 2.8 ms) proton beam. Protons will be driven by linear accelerator (Linac) with maximum energy of 2 GeV and average power...
Dali Georgobiani
(Facility for Rare Isotope Beams (FRIB), Michigan State University, East Lansing, MI 48824 USA)
28/04/2014, 17:54
The Facility for Rare Isotope Beams (FRIB), a project supported by the US DOE Office of Science, is under construction at Michigan State University. The production of rare isotope beams during FRIB operations creates a high radiation environment for the fragment preseparator superconducting magnets. Therefore, detailed studies of the proposed magnet designs and shielding by beam and radiation...
Daniela Ene
(European Spallation Source, ESS-AB, Sweden)
28/04/2014, 18:03
As other accelerator based facilities, the European Spallation Source (ESS) facility will not be a totally isolated system. It will interact with the environment. One can distinguish four types of radiological impacts: i) releases of activated air, ii) discharges of activated water, iii) activation of soil and groundwater, iv) stray radiation in the environment. The Swedish legislation...
46.
Contribution of the Direct Electronuclear Processes to Thin Target Activation___________________
Pavel Degtiarenko
(Jefferson Lab)
28/04/2014, 18:12
Contribution of the direct inelastic interactions of electrons with nuclei to the neutron production and to the material activation radiation source terms may become significant or even critical in certain conditions at high energy electron accelerators. Impact of these processes may be considered negligible in descriptions and simulations of fully developed electromagnetic or hadronic...
Vitaly Pronskikh
(Fermilab)
28/04/2014, 18:21
A preliminary study of the Energy Production Demonstrator (EPD) concept, a heavy metal target irradiated by GeV-range intense proton beams and producing more energy than consuming, is carried out. Neutron production and fission are simulated using the MARS15 code for tungsten, natural uranium, lead and thorium target options, along with energy deposition and gain, peak DPA rate, materials...
Igor Rakhno
(Fermi National Accelerator Laboratory)
28/04/2014, 18:30
The Long-Baseline Neutrino Experiment (LBNE) at Fermilab is supposed to provide the world’s highest-intensity neutrino beam for the US program in neutrino physics. The corresponding incoming proton beam power can ultimately be as high as 2.3 MW, and the underground beam absorber at the end of the decay channel with related infrastructure is supposed to operate with little or no maintenance for...
Sergei Striganov
(Fermilab)
28/04/2014, 18:48
The Moliere approximation of elastic Coulomb scattering cross sections plays an important role in accurate description of multiple scattering, non-ionization energy, DPA radiation damage etc. The cross section depends only on a single parameter that describes the atomic screening. Moliere calculated the screening angle for the Tomas-Fermi distribution of electrons in atoms. In this paper, the...
Toshiya SANAMI
(High energy accelerator research organization (KEK))
28/04/2014, 19:15
The International Linear Collider is a proposed high energy collider which consist of two liner accelerators, two dumping rings, electron and positron source, and single colliding hall with two detectors. The total length and CMS energy of ILC reach 31 km and 500 GeV, respectively (50 km with 1 TeV for future upgrade). In 2013, Technical research document (TDR) of ILC was published and...
Joel Risner
(Oak Ridge National Laboratory)
29/04/2014, 08:55
Shielding analyses for the Spallation Neutron Source (SNS) at Oak Ridge National Laboratory pose significant computational challenges, including highly anisotropic high-energy sources, a combination of deep penetration shielding and an unshielded beamline, and a desire to obtain well-converged ‘nearly global’ solutions for mapping of predicted radiation fields. The majority of these analyses...
Lali Tchelidze
(European Spallation Source)
29/04/2014, 09:20
European Spallation Source (ESS) will consist of a proton linear accelerator that will accelerate protons up to 2 GeV, a target and a number of neutron instruments. An overall preliminary assessment of the linac shielding is completed. A simplified 3D model is constructed and used for necessary shielding evaluations using MARS Monte Carlo code. Model consists of a linac tunnel and an earth...
Riccardo Bevilacqua
(European Spallation Source)
29/04/2014, 09:45
The European Spallation Source (ESS) is a collaboration of 17 European partner countries established to project, build and operate the world’s most powerful neutron source in Lund, Sweden. The construction of the facility will start in the course of 2014, and ESS is expected to produce the first neutrons in 2019.
Monte Carlo calculations are required to design the appropriate shielding needed...
Pedro Vaz
(IST - Radiological Protection and Safety Group)
29/04/2014, 10:30
Over the last decade, the importance of evolving towards the construction of Radioactive Ion Beam (RIB) facilities gained considerable interest and support from the Nuclear Physics community (at large). Projects like the EURISOL (EURopean Isotope Separation On-Line Radioactive Ion Beam) Design Study paved the way to the investigation of scientific, technological and engineering studies of the...
Bradley Micklich
(Argonne National Laboratory)
29/04/2014, 11:20
Argonne’s ATLAS accelerator facility is a national user facility for low-energy nuclear physics. Ions from protons to uranium are produced by one of two ECR sources, accelerated in the booster linac and the main ATLAS linac, and then directed to one of three experimental areas. ATLAS has just finished upgrading the booster linac to provide a significant increase in current. This paper presents...
Hee-seock LEE
(Pohang Accelerator Laboratory)
29/04/2014, 11:45
A shielding analysis was carried out for 90 degrees bending section of heavy ion accelerator of RISP (Rare Isotope Science Project). A projectile beam is 18.5 MeV/u, 9.5 pμA U-238 with charges of 33+(50%) and 34+(50%). A thin carbon stripper is placed to generate higher positive charged U beam at the front of the 90 degrees bending section. The bending section consists of many quadrupole...
Nam-Suk JUNG
(Pohang Accelerator Laboratory / POSTECH)
29/04/2014, 14:20
The PAL-XFEL is a free electron laser using 10 GeV, 0.2 nC electron beams. The construction started in 2012. In this study, the design for radiation shielding of PAL-XFEL is presented. Beam loss scenario was established, and the bulk shielding was calculated with a consideration of beam loss scenario using SHIELD11 and FLUKA. Several dumps such as the main beam dump, the tune-up dump and...
Carol Johnstone
(Fermilab)
29/04/2014, 15:50
As discussed in the DOE report “Accelerators for America’s Future,” most of the critical R&D in particle-beam therapy can only be conducted at a dedicated accelerator-based medical research facility capable of supplying the full range of ion beams from protons to carbon, oxygen or even neon. Such a facility not only requires beam energies and intensities useful for therapy and imaging but...
Vladimir Mares
(Helmholtz Zentrum München, Institute of Radiation Protection, 85764 Neuherberg, Germany)
29/04/2014, 16:40
Proton therapy is an advanced radiation treatment that destroys cancer cells with high accuracy. Proton treatment beams can be fine-tuned to deposit most of their energy at a specific depth within the patient, keeping irradiation of adjacent organs and healthy tissue to a minimum. However, proton interactions with materials in the beam line and with patient’s tissue create secondary neutrons...
Arnold Pompos
(UTSouthwestern Medical Center)
29/04/2014, 17:05
A heavy ion therapy and research facility is being conceptually designed by the UT Southwestern Medical Center (UTSW) in Dallas, TX, USA. It will be the phase three addition to a total of three phase plan that consists of a proton therapy center (phase 1) and a large conventional (photon) center (phase 2). This unified complex of all currently available modalities for radiation therapy systems...
Robert Grove
(Oak Ridge National Laboratory)
30/04/2014, 08:30
The OECD NEA Working Party on Scientific Issues of Reactor Systems (WPRS) Expert Group on Radiation Transport and Shielding (EGRTS) was started in 2011 under the Nuclear Science Committee (NSC); the 4th meeting was held in February 2014. Among other activities, the EGRTS mandate includes supporting the SATIF community by co-ordinating the organization of and publishing the proceedings for the...
Hideo Hirayama
(KEK, High Energy Accelerator Research Organization)
30/04/2014, 10:55
Intercomparison of Particle production
Hideo Hirayama asn Toshiya Sanami
KEK, High Energy Accelerator Research Organization
1-1, Oho, Tsukuba, Ibaraki, 305-0801 Japan
In accordance with the discussion at SATIF11, we sent the following
inter comparison problemswe of particle production from thick targets
to understand the differences of neutron attenuation inside Fe and...
Frédéric Stichelbaut
(Ion Beam Applications)
30/04/2014, 11:20
The capability to accurately model the production of secondary neutrons from protons interacting with matter is of tremendous importance in Proton Therapy. These neutrons are the major source of secondary doses delivered to a patient during treatment. They also represent the most important contribution to the ambient doses remaining outside the biological shielding. They also constitute an...
Stefan E. Müller
(Helmholtz-Zentrum Dresden-Rossendorf)
30/04/2014, 11:45
In 1974, Nelson, Kase, and Svensson published an experimental investigation
on muon shielding around SLAC high energy electron accelerators (NIM 120
(1974) 413). They measured muon fluence and absorbed dose induced by 14 and
18 GeV electron beams hitting a copper/water beamdump and attenuated in a
thick steel shielding. In their paper, they compared the results with the
theoretical models...
Reginald Ronningen
(Facility for Rare Isotope Beams, Michigan State University, East Lansing, MI 48824 USA)
30/04/2014, 12:10
The performance of the Monte Carlo code system PHITS is validated for heavy ion transport capabilities by performing simulations and comparing results against experimental data from heavy ion reactions of benchmark quality. These data are from measurements of isotope yields produced in the fragmentation of a 140 MeV/u 48Ca beam on a beryllium target and on a tantalum target. The results of...
Tatsumi Koi
(SLAC National Accelerator Laboratory)
30/04/2014, 13:35
Geant4 is a toolkit for the simulation of the passage of particles through matter. To show its capability in the shielding area, we have submitted Geant4 results for the ”Inter comparison Problems of Neutron Attenuation” to SATIF organizers since 2006. Version 10 is the latest and major update of Geant4 and is publicly available since December 2013. Because it is a major update, there are...