公开(公告)号：US08552370B2

公开(公告)日：2013-10-08

申请号：US11977409

申请日：2007-10-24

申请人： Larry Joe Schultz ,  Alexei Vasilievich Klimenko ,  Andrew Mcleod Fraser ,  Christopher Morris ,  John Christopher Orum ,  Konstantin N. Borozdin ,  Michael James Sossong ,  Nicolas W. Hengartner

发明人： Larry Joe Schultz ,  Alexei Vasilievich Klimenko ,  Andrew Mcleod Fraser ,  Christopher Morris ,  John Christopher Orum ,  Konstantin N. Borozdin ,  Michael James Sossong ,  Nicolas W. Hengartner

IPC分类号： G01N23/201

CPC分类号： G01N23/201 ,  G01N23/20 ,  G01V5/0025 ,  G01V5/0075 ,  G06F17/18

摘要： Systems and methods for charged particle detection including statistical reconstruction of object volume scattering density profiles from charged particle tomographic data to determine the probability distribution of charged particle scattering using a statistical multiple scattering model and determine a substantially maximum likelihood estimate of object volume scattering density using expectation maximization (ML/EM) algorithm to reconstruct the object volume scattering density. The presence of and/or type of object occupying the volume of interest can be identified from the reconstructed volume scattering density profile. The charged particle tomographic data can be cosmic ray muon tomographic data from a muon tracker for scanning packages, containers, vehicles or cargo. The method can be implemented using a computer program which is executable on a computer.

摘要翻译： 用于带电粒子检测的系统和方法，包括从带电粒子层析成像数据的物体体积散射密度分布的统计重建，以使用统计多重散射模型确定带电粒子散射的概率分布，并使用期望确定物体体积散射密度的基本最大似然估计 最大化（ML / EM）算法重建物体体积散射密度。 可以从重建的体积散射密度分布中识别占据感兴趣体积的物体的存在和/或类型。 带电粒子断层数据可以是用于扫描包装，集装箱，车辆或货物的muon跟踪器的宇宙射线μon断层摄影数据。 该方法可以使用可在计算机上执行的计算机程序来实现。

公开(公告)号：US07838841B2

公开(公告)日：2010-11-23

申请号：US11977410

申请日：2007-10-24

申请人： Christopher Morris ,  Andrew Mcleod Fraser ,  Larry Joe Schultz ,  Konstantin N. Borozdin ,  Alexei Vasilievich Klimenko ,  Michael James Sossong ,  Gary Blanpied

发明人： Christopher Morris ,  Andrew Mcleod Fraser ,  Larry Joe Schultz ,  Konstantin N. Borozdin ,  Alexei Vasilievich Klimenko ,  Michael James Sossong ,  Gary Blanpied

IPC分类号： H01L25/00 ,  H01L27/00 ,  G01T1/29 ,  G01K1/08 ,  H01J3/14

CPC分类号： G01N23/201 ,  G01N23/20 ,  G01V5/0025 ,  G01V5/0075 ,  G06F17/18

摘要： Methods, apparatus and systems for detecting charged particles and obtaining tomography of a volume by measuring charged particles including measuring the momentum of a charged particle passing through a charged particle detector. Sets of position sensitive detectors measure scattering of the charged particle. The position sensitive detectors having sufficient mass to cause the charged particle passing through the position sensitive detectors to scatter in the position sensitive detectors. A controller can be adapted and arranged to receive scattering measurements of the charged particle from the charged particle detector, determine at least one trajectory of the charged particle from the measured scattering; and determine at least one momentum measurement of the charged particle from the at least one trajectory. The charged particle can be a cosmic ray-produced charged particle, such as a cosmic ray-produced muon. The position sensitive detectors can be drift cells, such as gas-filled drift tubes.

摘要翻译： 用于检测带电粒子的方法，装置和系统，并通过测量带电粒子来测量体积的断层摄影，包括测量通过带电粒子检测器的带电粒子的动量。 位置敏感检测器的集合测量带电粒子的散射。 位置敏感检测器具有足够的质量以使带电粒子通过位置敏感检测器散射在位置敏感检测器中。 控制器可以被适配和布置成从带电粒子检测器接收带电粒子的散射测量，从测量的散射中确定带电粒子的至少一个轨迹; 并且从所述至少一个轨迹确定所述带电粒子的至少一个动量测量。 带电粒子可以是宇宙射线产生的带电粒子，例如宇宙射线产生的μ子。 位置敏感检测器可以是漂移电池，例如充气漂移管。

公开(公告)号：US20080265156A1

公开(公告)日：2008-10-30

申请号：US11977410

申请日：2007-10-24

申请人： Christopher Morris ,  Andrew Mcleod Fraser ,  Larry Joe Schultz ,  Konstantin N. Borozdin ,  Alexei Vasilievich Klimenko ,  Michael James Sossong ,  Gary Blanpied

发明人： Christopher Morris ,  Andrew Mcleod Fraser ,  Larry Joe Schultz ,  Konstantin N. Borozdin ,  Alexei Vasilievich Klimenko ,  Michael James Sossong ,  Gary Blanpied

IPC分类号： H01J47/00

CPC分类号： G01N23/201 ,  G01N23/20 ,  G01V5/0025 ,  G01V5/0075 ,  G06F17/18

摘要： Methods, apparatus and systems for detecting charged particles and obtaining tomography of a volume by measuring charged particles including measuring the momentum of a charged particle passing through a charged particle detector. Sets of position sensitive detectors measure scattering of the charged particle. The position sensitive detectors having sufficient mass to cause the charged particle passing through the position sensitive detectors to scatter in the position sensitive detectors. A controller can be adapted and arranged to receive scattering measurements of the charged particle from the charged particle detector, determine at least one trajectory of the charged particle from the measured scattering; and determine at least one momentum measurement of the charged particle from the at least one trajectory. The charged particle can be a cosmic ray-produced charged particle, such as a cosmic ray-produced muon. The position sensitive detectors can be drift cells, such as gas-filled drift tubes.

摘要翻译： 用于检测带电粒子的方法，装置和系统，并通过测量带电粒子来测量体积的断层摄影，包括测量通过带电粒子检测器的带电粒子的动量。 位置敏感检测器的集合测量带电粒子的散射。 位置敏感检测器具有足够的质量以使带电粒子通过位置敏感检测器散射在位置敏感检测器中。 控制器可以被适配和布置成从带电粒子检测器接收带电粒子的散射测量，从测量的散射中确定带电粒子的至少一个轨迹; 并且从所述至少一个轨迹确定所述带电粒子的至少一个动量测量。 带电粒子可以是宇宙射线产生的带电粒子，例如宇宙射线产生的μ子。 位置敏感检测器可以是漂移电池，例如充气漂移管。