公开(公告)号：EP2791706A1

公开(公告)日：2014-10-22

申请号：EP12871820.2

申请日：2012-12-13

Applicant: Purdue Research Foundation

Inventor： TALEYARKHAN, Rusi ,  ARCHAMBAULT, Brian

IPC: G01T5/00

CPC classification number: G01T5/02 ,  G01T3/00 ,  G01T5/002 ,  G01T5/06

Abstract: A directional-position sensing fast neutron sensor system is disclosed. The system includes one or more acoustically tensioned metastable fluid detector (ATMFD) for determining the direction of the source of incident neutron radiation. The system has been used to detect the position of a 1 Ci Pu-Be neutron radiation source. The ATMFD detector is comparable in technical performance with directional fast neutron detector-bank technologies but is significantly more economical, smaller, and has little to no interference from nonneutron background radiation. The ATMFD detector can be used to locate hidden neutron sources and has been used in blind tests to do so. Specifically an ATMFD system (with a 6 x 10 cm cross- sectional area) provides directional information for incoming neutron radiation from an 8 kg Pu source from a distance of 25 m with a resolution of 11.2° at a 68% confidence within 60 seconds. Position and neutron source image sensing were also demonstrated using two ATMFDs.

公开(公告)号：EP3153982A1

公开(公告)日：2017-04-12

申请号：EP15803426.4

申请日：2015-05-29

Applicant: Japan Agency for Marine-Earth Science and Technology

Inventor： YAMAMOTO, Miki ,  NISHIURA, Daisuke ,  SAKAGUCHI, Hide

IPC: G06F19/00

CPC classification number: G06G7/485 ,  G01N15/10 ,  G01N2015/0003 ,  G01T5/002 ,  G06F17/10 ,  G06F17/5009 ,  G06F17/5018 ,  G06F19/00 ,  G06F19/12 ,  G06F19/701 ,  Y02A90/16

Abstract: The calculation efficiency is improved in a particle simulation. A particle simulation device 10, which calculates the position and velocity of particles on the basis of the interaction force between particles in a work space, comprises: a position information acquisition unit 12 that acquires position information for the particles; a particle number setting unit 13 that sets particle numbers for the particles; a pair setting unit 14 that selects pairs of particles and sets a pair number, on the basis of the position information; a reference information generation unit 15 that generates a matrix from the pair numbers and the particle numbers, and generates reference information for referencing the pair numbers from the particle numbers on the basis of a matrix in which the order of the rows of the matrix are sorted on the basis of the particle numbers; a contact force calculation unit 16 that calculates the interaction force of the particles in the pairs; a sum calculation unit 17 that calculates a sum of interaction forces for each particle on the basis of the reference information; and a particle information calculation unit 18 that calculates the position and velocity of the particles on the basis of the sum of interaction forces.

Abstract translation: 在粒子模拟中计算效率得到提高。 颗粒模拟装置10，其基于工作空间中的颗粒之间的相互作用力计算颗粒的位置和速度，包括：位置信息获取单元12，其获取颗粒的位置信息; 设置粒子的粒子数的粒子数设定部13; 一对设定单元14，根据位置信息选择一对粒子并设定一对; 参考信息生成单元15，其从对号和粒子数生成矩阵，并且基于矩阵的排列顺序从矩阵生成参照来自粒子数的对数的参考信息， 基于粒子数; 接触力计算单元16，其计算成对中的颗粒的相互作用力; 和计算单元17，其基于参考信息计算每个粒子的相互作用力的总和; 和粒子信息计算单元18，其基于相互作用力的和来计算粒子的位置和速度。

公开(公告)号：EP2791706A4

公开(公告)日：2015-08-26

申请号：EP12871820

申请日：2012-12-13

Applicant: PURDUE RESEARCH FOUNDATION

Inventor： TALEYARKHAN RUSI ,  ARCHAMBAULT BRIAN

IPC: G01T5/06 ,  G01T3/00

CPC classification number: G01T5/02 ,  G01T3/00 ,  G01T5/002 ,  G01T5/06