scholarly journals Development of Parallel Computing Framework to Enhance Radiation Transport Code Capabilities for Rare Isotope Beam Facility Design

2013 ◽  
Author(s):  
Mikhail Kostin ◽  
Nikolai Mokhov ◽  
Koji Niita
Keyword(s):  
Parallel Computing ◽  
Radiation Transport ◽  
Facility Design ◽  
Rare Isotope ◽  
Rare Isotope Beam ◽  
Transport Code ◽  
Computing Framework

TopADD: a 2D/3D integrated topology optimization parallel-computing framework for arbitrary design domains

2021 ◽  
Author(s):  
Zhi-Dong Zhang ◽  
Osezua Ibhadode ◽  
Ali Bonakdar ◽  
Ehsan Toyserkani
Keyword(s):  
Parallel Computing ◽  
Topology Optimization ◽  
Computing Framework

scholarly journals Radiation Risks in Cis-Lunar Space for a Solar Particle Event Similar to the February 1956 Event

Aerospace ◽  
2021 ◽  
Vol 8 (4) ◽  
pp. 107
Author(s):  
Fahad A. Zaman ◽  
Lawrence W. Townsend
Keyword(s):  
Effective Dose ◽  
Energy Transport ◽  
Radiation Transport ◽  
Organ Doses ◽  
Solar Particle Events ◽  
Solar Particle ◽  
Transport Code ◽  
On Line ◽  
Critical Organ ◽  
In Cis

Solar particle events (SPEs) can pose serious threats for future crewed missions to the Moon. Historically, there have been several extreme SPEs that could have been dangerous for astronauts, and thus analyzing their potential risk on humans is an important step towards space exploration. In this work, we study the effects of a well-known SPE that occurred on 23 February 1956 on a mission in cis-Lunar space. Estimates of the proton fluence spectra of the February 1956 event were obtained from three different parameterized models published within the past 12 years. The studied geometry consists of a female phantom in the center of spherical spacecraft shielded by aluminum area densities ranging from 0.4 to 40 g cm−2. The effective dose, along with lens, skin, blood forming organs, heart, and central nervous system doses, were tallied using the On Line Tool for the Assessment of Radiation In Space (OLTARIS), which utilizes the High Z and Energy TRansport code (HZETRN), a deterministic radiation transport code. Based on the parameterized models, the results herein show that thicknesses comparable to a spacesuit might not protect against severe health consequences from a February 1956 category event. They also show that a minimum aluminum shielding of around 20 g cm−2 is sufficient to keep the effective dose and critical organ doses below NASA’s permissible limits for such event. In addition, except for very thin shielding, the input models produced results that were within good agreement, where the doses obtained from the three proton fluence spectra tended to converge with slight differences as the shielding thickness increases.

Snow: A Parallel Computing Framework for the R System

2008 ◽  
Vol 37 (1) ◽  
pp. 78-90 ◽  
Author(s):  
Luke Tierney ◽  
A. J. Rossini ◽  
Na Li
Keyword(s):  
Parallel Computing ◽  
Computing Framework

Cross-shell excitations in Ca46 studied with fusion reactions induced by a reaccelerated rare isotope beam

2021 ◽  
Vol 103 (5) ◽  
Author(s):  
J. Ash ◽  
H. Iwasaki ◽  
T. Mijatović ◽  
T. Budner ◽  
R. Elder ◽  
...  
Keyword(s):  
Fusion Reactions ◽  
Rare Isotope ◽  
Rare Isotope Beam

A Practical Approach for Scalable Record Linkage on Hadoop

2013 ◽  
Vol 753-755 ◽  
pp. 3018-3024 ◽  
Author(s):  
Fen Gyu Yang ◽  
Ying Chen ◽  
Ye Zhang
Keyword(s):  
Parallel Computing ◽  
Record Linkage ◽  
Practical Approach ◽  
Massive Data ◽  
Traditional Methods ◽  
High Recall ◽  
Data Parallel ◽  
Computing Framework ◽  
Data Parallel Computing ◽  
Hadoop Cluster

As increasing data have been collected in many applications, we have to face with millions of data in record linkage. With respect to traditional methods, there comes out a big challenge in performance while dealing with massive data. Parallel computing framework, such as MapReduce, has become an efficient and practical way to address this problem. In this paper, we propose a practical 3-phase MapReduce approach that fulfills blocking, filtering, and linking in 3 consecutive processes on Hadoop cluster. Experiments show that our approach functions efficiently and effectively with keeping high recall in contrast to tradition method.

Electron-beam ion source/trap charge breeders at rare-isotope beam facilities

2019 ◽  
Vol 90 (10) ◽  
pp. 103312 ◽  
Author(s):  
A. Lapierre
Keyword(s):  
Electron Beam ◽  
Ion Source ◽  
Rare Isotope ◽  
Trap Charge ◽  
Rare Isotope Beam
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