501 The Structural Design of a Proton Beam Window in the Spallation Target System

2001 ◽  
Vol 2001 (0) ◽  
pp. 107-108
Author(s):  
Takuji TERAOKU ◽  
Masanori KAMINAGA ◽  
Atsuhiko TERADA ◽  
Hidetaka KINOSHITA ◽  
Syuichi ISHIKURA ◽  
...  
Keyword(s):  
Proton Beam ◽  
Structural Design ◽  
Target System ◽  
Spallation Target

310 Structual Design of Proton Beam Window in Spallation Target System

2000 ◽  
Vol 2000 (0) ◽  
pp. 83-84
Author(s):  
Takuji TERAOKU ◽  
Masanori KAMINAGA ◽  
Atsuhiko TERADA ◽  
Syuichi ISHIKURA ◽  
Hidetaka KINOSHITA ◽  
...  
Keyword(s):  
Proton Beam ◽  
Target System ◽  
Spallation Target

Heating Thermal/Structural Analysis of a Thin Beam Window of Ultra Cold Neutron Test Facility

Volume 4 ◽  
2004 ◽  
Author(s):  
Zukun Chen ◽  
Nathan K. Bultman
Keyword(s):  
Proton Beam ◽  
Heat Load ◽  
Thermal Stresses ◽  
Cold Neutron ◽  
Element Model ◽  
Particle Beam ◽  
Test Facility ◽  
Target System ◽  
Delivery Time ◽  
Ultra Cold Neutron

This paper is an analytical investigation of a proposed vacuum barrier window that isolates the proton beam transport vacuum envelope from the Ultra Cold Neutron (UCN) experimental target system at atmospheric pressure. The window is subjected to static pressure and cyclic thermal stresses as the accelerated particle beam passes through it and deposits a small amount of energy in the window. The analysis investigates various beam rms sizes for two beam delivery time structures. The 0.1-mm thick, 52 mm diameter window is made of inconel alloy 718 and is welded to the beamline tube at its outer edge. For some combinations of delivery time structure and beam size, the window under differential pressure and proton beam heating experiences stress that is well above yield and possibly large enough to break the inconel foil. In order to analyze the induced temperature and stress, a finite element model has been developed. The model has been written parametrically to allow the beam characteristics, window material properties, dimensions and mesh densities to be easily adjusted. The heat load is applied to the model through the use of a 3-dimentional table containing the calculated volumetric heat rates. The heat load is based on a radial distribution for a circular Gaussian beam under both normal and extensional operation cases. In this analysis, a radial-centered, circular beam is assumed. The results of several analyses are presented in this paper.

Structural design on reactor coupled with the spallation target for a lead-based ADS

2020 ◽  
Vol 363 ◽  
pp. 110626
Author(s):  
Daogang Lu ◽  
Tingru Yin ◽  
Xudong Li ◽  
Yue Wang ◽  
Shu Wang ◽  
...  
Keyword(s):  
Structural Design ◽  
Spallation Target

scholarly journals Design of a Thorium Metal Target for 225Ac Production at TRIUMF

Instruments ◽  
2019 ◽  
Vol 3 (1) ◽  
pp. 18 ◽  
Author(s):  
Andrew Robertson ◽  
Andrew Lobbezoo ◽  
Louis Moskven ◽  
Paul Schaffer ◽  
Cornelia Hoehr
Keyword(s):  
Proton Beam ◽  
Scale Up ◽  
Clinical Results ◽  
Target System ◽  
Average Standard Deviation ◽  
Production Scale ◽  
Alpha Therapy ◽  
Mev Protons ◽  
Production Target ◽  
Significant Effort

With recent impressive clinical results of targeted alpha therapy using 225Ac, significant effort has been directed towards providing a reliable and sufficient supply of 225Ac to enable widespread using of 225Ac-radiopharmaceuticals. TRIUMF has begun production of 225Ac via spallation of thorium metal with 480 MeV protons. As part of this program, a new 225Ac-production target system capable of withstanding the power deposited by the proton beam was designed and its performance simulated over a range of potential operating parameters. Special attention was given to heat transfer and stresses within the target components. The target was successfully tested in two irradiations with a 72–73 µA proton beam for a duration of 36.5 h. The decay corrected activity at end of irradiation (average ± standard deviation) was (524 ± 21) MBq (14.2 mCi) and (86 ± 13) MBq (2.3 mCi) for 225Ac and 225Ra, respectively. These correspond to saturation yields of 72.5 MBq/µA for 225Ac and 17.6 MBq/µA for 225Ra. Longer irradiations and production scale-up are planned in the future.

scholarly journals Split-target neutronics and the MLNSC spallation target system

1997 ◽  
Author(s):  
G. J. Russell ◽  
P. D. Ferguson ◽  
E. J. Pitcher ◽  
J. D. Court
Keyword(s):  
Target System ◽  
Spallation Target

scholarly journals Remote Handling Technology for Lead-Bismuth Spallation Target System

2021 ◽  
Author(s):  
Hironari Obayashi ◽  
Hidemitsu Yoshimoto ◽  
Satoshi Kita ◽  
Kenichi Yamaki ◽  
Tao Wan ◽  
...  
Keyword(s):  
Target System ◽  
Spallation Target ◽  
Remote Handling

Evaluation of the 3-GeV proton beam profile at the spallation target of the JSNS

2006 ◽  
Vol 562 (2) ◽  
pp. 569-572 ◽  
Author(s):  
Shin-ichiro Meigo ◽  
Fumiaki Noda ◽  
Syuichi Ishikura ◽  
Masatoshi Futakawa ◽  
Shinichi Sakamoto ◽  
...  
Keyword(s):  
Proton Beam ◽  
Beam Profile ◽  
Spallation Target

Thermal Hydraulic Analysis of China Spallation Neutron Source Target System Under Abnormal Situations

2016 ◽  
Vol 139 (1) ◽  
Author(s):  
Jun-Hong Hao ◽  
Qun Chen ◽  
You-Lian Lu ◽  
Song-Lin Wang ◽  
Quan-Zhi Yu ◽  
...  
Keyword(s):  
Proton Beam ◽  
Neutron Source ◽  
Cooling Water ◽  
Normal Operation ◽  
Maximum Temperature ◽  
Target System ◽  
Monte Carlo Code ◽  
Operating Pressure ◽  
Spallation Neutron Source ◽  
Power Failure

The analysis of thermal hydraulic performance under three abnormal conditions is very important for the design of China spallation neutron source (CSNS) target system, which could provide some important information for developing an emergency plan. In this study, we first introduce the design of the CSNS target system and create a three-dimensional physical model, calculate the heat source and decay heat distribution using the MCNPX 2.5 Monte Carlo code and the CINDER’90 activation code, and simulate and analyze the temperature distribution in the tungsten target and the steel container under normal operation using fluent. By using the same model, the thermal hydraulic characteristics are analyzed under three different abnormal conditions including power failure, off-center of proton beam, and cooling water failure. The results show that in order to keep the cooling water temperature below the boil point at normal operating pressure, the emergency power for the cooling water should start immediately after power failure. The maximum temperature of the beam window and the up plate increases by about 8 °C when the offsetting distance of proton beam is 5 mm along z direction. The cooling water will not effectively take all away the heat when the flow rate of the cooling water drops below 72% of the normal setpoint.

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