Intensity and Spectra of a White Light Neutron Source Produced by a 70-MeV Proton Accelerator

2000 ◽  
Vol 132 (1) ◽  
pp. 61-65 ◽  
Author(s):  
Qing Biao Shen
Keyword(s):  
Neutron Source ◽  
White Light ◽  
Proton Accelerator

Developments of a multiplexer system for the High-Brilliance Neutron Source HBS

2021 ◽  
pp. 1-14
Author(s):  
Marius Rimmler ◽  
Olaf Felden ◽  
Ulrich Rücker ◽  
Helmut Soltner ◽  
Paul Zakalek ◽  
...  
Keyword(s):  
Neutron Source ◽  
Test Facility ◽  
Proton Accelerator ◽  
Neutron Beams ◽  
Time Structures ◽  
Pulse Structure ◽  
Main Components

The High-Brilliance Neutron Source project (HBS) aims at developing a medium-flux accelerator-driven neutron source based on a 70 MeV, 100 mA proton accelerator. The concept optimizes the facility such that it provides high-brilliance neutron beams for instruments operating at different time structures. This can be realized by generating an interlaced proton pulse structure, which is unraveled and sent to three different target stations by a multiplexer system. In the following we present the developments of a multiplexer system at the JULIC accelerator at Forschungszentrum Jülich GmbH (FZJ), which serves as test facility for HBS. The main components of the JULIC multiplexer system are designed to be scalable to the HBS parameters.

Mercury Target and Its Peripheral Devices for 1 MW Spallation Neutron Source

2004 ◽  
Author(s):  
Katsuhiro Haga ◽  
Masanori Kaminaga ◽  
Hidetaka Kinoshita ◽  
Hiroyuki Kogawa ◽  
Hiroshi Satoh ◽  
...  
Keyword(s):  
Neutron Source ◽  
High Intensity ◽  
Cross Flow ◽  
High Energy ◽  
Proton Accelerator ◽  
Circulation System ◽  
Design Activity ◽  
Spallation Neutron Source ◽  
Present Design ◽  
Facility Construction

The Japan Atomic Energy Research Institute (JAERI) and the High Energy Accelerator Research Organization (KEK) are promoting a plan to construct a 1MW neutron source facility at the Tokai Research Establishment, JAERI, under the Japan Proton Accelerator Research Complex (J-PARC) Project. In the facility, 1 MW pulsed proton beam from a high-intensity proton accelerator will be injected into a mercury target in order to produce high-intensity pulse neutrons for use in the fields of life and material sciences. In order to realize such a high-power neutron source, the design activity of a cross flow type (CFT) mercury target and its peripheral devices has continued and the results is reflected in the ordering specifications of the facility construction. The arrangement of each component and their structure was optimized through experimental and analytical studies. In this paper, the present design of the mercury target components for 1MW spallation neutron source including the target vessel, a mercury circulation system, and a target trolley will be reported.

scholarly journals The SONATE project, a French CANS for Materials Sciences Research

2020 ◽  
Vol 231 ◽  
pp. 01004 ◽  
Author(s):  
Frédéric Ott ◽  
Alain Menelle ◽  
Christiane Alba-Simionesco
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Neutron Source ◽  
Powder Diffraction ◽  
Spin Echo ◽  
Average Power ◽  
Proton Accelerator ◽  
Low Resolution ◽  
Reference Design ◽  
Time Of Flight Spectroscopy

We describe the Compact Accelerator-based Neutron Source SONATE which we are aiming for to replace the closed Orphée reactor at Saclay, France. The SONATE source would serve an instrumental suite of about 10 instruments. The instruments would be split into low resolution instruments and higher resolution instruments. Our reference design is based on a proton accelerator operating at an energy in the range 20-30 MeV. The accelerator would serve 2 target stations. The first one operating at 20Hz with 2ms long pulses serving low resolution instruments (SANS, reflectivity, imaging, spin-echo) and the second one operating at 100Hz, 200μs long pulses serving higher resolution instruments (powder diffraction, Direct Time-of-flight spectroscopy, Indirect geometry spectroscopy). The 2 operation modes would be interlaced. The peak current on the target is aimed at 100 mA with an average power on the target on the order of 50-80 kW. Numerical Monte-Carlo simulations show that we may expect instrument performances equivalent to the current instruments around Orphée or ISIS.

scholarly journals Neutrons production on the IPHI accelerator for the validation of the design of the compact neutron source SONATE

2020 ◽  
Vol 231 ◽  
pp. 01007
Author(s):  
Hoang Ngoc Tran ◽  
Frédéric Ott ◽  
Jacques Darpentigny ◽  
Anthony Marchix ◽  
Alain Letourneau ◽  
...  
Keyword(s):  
Monte Carlo ◽  
Monte Carlo Simulations ◽  
Neutron Flux ◽  
Neutron Scattering ◽  
Thermal Neutron ◽  
Neutron Source ◽  
Thermal Neutron Flux ◽  
Gold Foil ◽  
Proton Accelerator ◽  
Good Agreement

We aim at building a compact accelerator-based neutron source (CANS) which would provide a thermal neutron flux on the order of 4x1012 n.s-1.cm-2.sr-1. Such a brilliance would put compact neutron sources on par with existing medium flux neutron research reactors for neutron scattering experiments. We performed the first neutron production tests on the IPHI proton accelerator at Saclay at a proton energy of 3 MeV. The thermal neutron flux were measured using gold foil activation and 3He detectors. The measured flux were compared with GEANT4 Monte Carlo simulations (10.4) in which the whole experimental setup was modelled. There is a good agreement between the experimental measurements and the Monte-Carlo simulations. The available modelling tools will allow us to optimize the whole Target Moderator Reflector assembly together with the neutron scattering spectrometer geometries for the design of the neutron scattering facility SONATE.

scholarly journals Измерения эмиттанса газодинамического электронно-циклотронного резонансного источника ионов

2021 ◽  
Vol 47 (10) ◽  
pp. 7
Author(s):  
С.В. Барабин ◽  
Г.Н. Кропачев ◽  
А.Ю. Лукашин ◽  
Т.В. Кулевой ◽  
С.С. Выбин ◽  
...  
Keyword(s):  
Neutron Source ◽  
Repetition Rate ◽  
Ion Beams ◽  
Ion Source ◽  
Electron Cyclotron ◽  
Proton Accelerator ◽  
Extraction Voltage ◽  
Proton Source ◽  
Current Duration

Advantages of using a gasdynamic electron cyclotron ion source in a proton accelerator based compact neutron source DARIA are discussed. It is experimentally demonstrated that the gasdynamic proton source is able to provide ion beams with 100 mA current, duration from 100 microseconds and longer at repetition rate up to 1 kHz. Emittance of the ion beams produced by the gasdynamic ion source was measured using a “pepper-pot” method for two extraction electrodes geometries: “spherical” and flat parallel. It is shown that the normalized 4 rms emittance value for both electrode configurations in the range of extraction voltage from 41 t 48 kV does not exceed 2 mm mrad.

scholarly journals Proton Beam Multiplexer Developments for Multi-Target Operation at the High-Brilliance Neutron Source HBS

2020 ◽  
Vol 231 ◽  
pp. 02002 ◽  
Author(s):  
Marius Rimmler ◽  
Johannes Baggemann ◽  
Paul Doege ◽  
Olaf Felden ◽  
Eric Mauerhofer ◽  
...  
Keyword(s):  
Proton Beam ◽  
Neutron Source ◽  
Pulse Sequences ◽  
Proton Accelerator ◽  
Beam Optics ◽  
Neutron Beams ◽  
Time Structures

The High-Brilliance neutron Source project (HBS) aims at developing a medium-flux acceleratordriven neutron source based on a 70 MeV, 100mA proton accelerator. The concept intends to optimize the facility such that it provides high-brilliance neutron beams for instruments operating at di_erent time structures. This can be realized by three di_erent target stations irradiated with di_erent proton pulse sequences. The appropriate proton pulses will be distributed by a Multiplexer unit. In the following, we present the integration of this Multiplexer with the HBS beam optics as well as ongoing developments of this unit and several components of the Multiplexer at the COSY facility in Jülich.

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