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Author

Mark Spacher

Bio: Mark Spacher is an academic researcher from University of Rochester. The author has contributed to research in topics: Particle detector & Radiation monitoring. The author has an hindex of 2, co-authored 2 publications receiving 28 citations.

Papers
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Patent
11 Dec 1989
TL;DR: In this paper, a portable personnel monitor that is easily transported, set up and operated to perform radiological contamination testing of personnel is provided by a collapsible frame containing scintillation detectors.
Abstract: A portable personnel monitor that is easily transported, set up and operated to perform radiological contamination testing of personnel is provided by a collapsible frame containing scintillation detectors. The frame has hinged columns as side members and a top member which is releasably connected with electrical and mechanical connecting and alignment devices to the columns. A signal analyzer unit is attached to one column via a T-slot and is connected to the scintillator detectors via a coaxial cable. A base plate having upstanding posts supports the frame rigidly in an upright position and is releasably connected to the columns by push/pull pins. The frame defines a passage which is of sufficinet height so that an adult human subject can pass through the radiation sensitivity field defined by the detectors. For transporting the monitor, the top frame member is unplugged and released; the signal analyzer unit is detached from the column; the columns are detached from the base and folded over into compact size. The collapsed unit is stored in suitcase size containers which are readily stowable or portable. All parts of the monitor are self-contained so that the monitor can be set up without tools and rapidly put into use.

19 citations

Patent
01 Jun 1990
TL;DR: In this article, a mobile radiation monitor includes a radiation detector unit and a signal analyzer connected to it, and a bridging platform connected to the base and extending over the radiation scintillation detector to provide a walkway over it.
Abstract: A mobile radiation monitor includes a radiation detector unit and a signal analyzer connected to it. The radiation detector unit includes a base, a flat pad radiation scintillation detector on the base, and a bridging platform connected to the base and extending over the radiation scintillation detector to provide a walkway over it. Radiation from a subject on the bridging platform, producing an effect in the scintillator, is monitored at the signal analyzer. The radiation detector unit includes handles for mobility and anti-slip pads for safety.

9 citations


Cited by
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Patent
06 Feb 2006
TL;DR: In this paper, a method for detecting Special Nuclear Materials (SNM) or Radiological dispersion Devices (RDD) is proposed, which conveying an object along a predetermined path, imaging a distribution of radioactive sources associated with the object as it passes along said path, determining the presence and location of one or both of an RDD or SNM radioactive source within the object.
Abstract: A method for detecting Special Nuclear Materials (SNM) or Radiological dispersion Devices (RDD), comprising: conveying an object along a predetermined path; imaging a distribution of radioactive sources associated with the object as it passes along said path; determining the presence and location of one or both of an RDD or SNM radioactive source within the object.

87 citations

Patent
07 Sep 2012
TL;DR: In this article, the authors present systems and methods for integrating manifest data for cargo and light vehicles with their X-ray images generated during scanning, which helps the security personnel to quickly determine the contents of cargo.
Abstract: The present specification discloses systems and methods for integrating manifest data for cargo and light vehicles with their X-ray images generated during scanning. Manifest data is automatically imported into the system for each shipment, and helps the security personnel to quickly determine the contents of cargo. In case of a mismatch between cargo contents shown by manifest data and the X-ray images, the cargo may be withheld for further inspection. In one embodiment, the process of analyzing the X-ray image of the cargo in conjunction with the manifest data is automated.

58 citations

Patent
25 Feb 2005
TL;DR: In this article, the authors propose a mobile detecting apparatus which can include the ability to transmit data to and receive instructions from a remote location, detect multiple objects (e.g. stacked or side by side containers or cargo), and provide efficient traffic flow.
Abstract: A mobile detecting apparatus which can include the ability to transmit data to and receive instructions from a remote location, detect multiple objects (e.g. stacked or side by side containers or cargo), and provide efficient traffic flow (e.g. at cargo port).

58 citations

Patent
27 Feb 2006
TL;DR: X-ray security inspection machine (10) comprising an X-ray tunnel (40); a conveyor means (50) for conveying an article through the tunnel; an Xray source for irradiating the article; and an X ray detection means for detecting X-rays transmitted through the article as discussed by the authors.
Abstract: X-ray security inspection machine (10) comprising an X-ray tunnel (40); a conveyor means (50) for conveying an article through the tunnel; an X-ray source for irradiating the article; and an X-ray detection means for detecting X-rays transmitted through the article In one aspect, the detection means comprises a photodetector array module (20) actuatable between a first stowed configuration and a second deployed configuration In a second aspect, the detection means comprises a first unit having a first photodetector array (22); and a second unit, having a second photodetector array (24), offset with respect to the first unit The units are moveable relative to one another between a first arrangement where the arrays overlap to a first degree and a second arrangement where they overlap to a second, lower degree; preferably zero Also, a conveyor belt-tracking device (100) comprising a guide frame (104) to receive the conveyor belt (116) and substantially to restrict its motion to a predetermined direction

48 citations

Patent
08 Aug 2006
TL;DR: A detector for detecting radiation is described in this paper, which consists of a plurality of elongate scintillator segments arranged in a side by side array and at least one pair of light sensors optically coupled to the ends of each of the segments.
Abstract: A detector for detecting radiation, the detector comprising: a plurality of elongate scintillator segments arranged in a side by side array; and at least one pair of light sensors optically coupled to ends of each of the elongate scintillator such that they receive light from scintillations produced in the scintillator and generate electrical signals responsive thereto.

34 citations