Muon detectors, systems and methods

• US 10,451,745 B1
• Filed: 12/10/2015
• Issued: 10/22/2019
• Est. Priority Date: 12/11/2014
• Status: Active Grant

• Current Assignee: Decision Sciences International Corporation, National Technology & Engineering Solutions Of Sandia LLC (Honeywell International Inc.)
• Original Assignee: National Technology & Engineering Solutions Of Sandia LLC (Honeywell International Inc.)
• Inventors: Bonal, Nedra D., Preston, Leiph A., Schwellenbach, David, Dreesen, Wendi, Green, J. Andrew, Sossong, Michael
• Primary Examiner(s): Gunberg, Edwin C
• Application Number:
  US14/965,666
• Time in Patent Office: 1,412 Days
• Field of Search: None
• CPC Class Codes: G01N 9/24 by observing the transmission of wave or particle radiation through the material
• CPC Class Codes: G01T 1/20 with scintillation detectors
• CPC Class Codes: G01T 5/00 Recording of movements or tracks of particles spark chambers H01J47/00; Processing or analysis of such tracks
• CPC Class Codes: G01T 5/08 Scintillation chambers discharge tubes H01J40/00, H01J47/00; semiconductor devices H01L

Abstract

A muon detector system capable of determining muon direction and flight trajectory or path is disclosed. The muon detector system includes scintillators for determining muon direction, and an array of muon detectors arranged in orthogonal layers for determining flight trajectory. The system can be used for tomographic and telescopic mode imaging, and may be used for imaging concealed and/or subterranean objects.

Claims

1. A muon detection system, comprising:

a muon detector, comprising;

a trajectory determination system; and

a scintillator assembly;

a processor; and

a user interface

wherein the processor comprises executable commands for determining the directionality of muons passing through the scintillator assembly and for determining a trajectory through which muons pass through the trajectory determination assembly;

wherein the processor further comprises executable commands for imaging an object not located within the muon detector; and

wherein the processor includes instructions that when executed processes muon detections in telescopic mode by processing detections by the muon detector to determine attenuation of muons to produce a 2-dimensional image of an object.

2. The muon detection system of claim 1, wherein the trajectory determination system comprises two or more layers of muon drift tubes arranged orthogonally.

3. The muon detection system of claim 1, wherein the scintillator assembly comprises parallel scintillator plates disposed on opposite sides of the trajectory determination system.

4. The muon detection system of claim 2, wherein the two or more layers is between 4 and 10 layers.

5. The muon detection system of claim 1, wherein the trajectory determination system comprises two or more layers of charged particle detectors comprising a plurality of position sensitive strips selected from a group consisting of scintillator bars, silicon strips, resistive plate chambers, drift tubes, drift chambers, muon detector chambers, and scintillator fibers.

6. A muon detector, comprising:

a scintillator assembly; and

a trajectory determination system disposed between portions of the scintillator assembly; and

a processor comprising executable commands for determining the directionality of muons passing through the scintillator assembly and for determining a trajectory through which muons pass through the trajectory determination assembly;

wherein the processor further comprises executable commands for imaging an object not located within the muon detector; and

wherein the processor includes instructions that when executed processes muon detections in telescopic mode by processing detections by the muon detector to determine attenuation of muons to produce a 2-dimensional image of an object.

7. The muon detector of claim 6, wherein the trajectory determination system comprises two or more layers of muon drift tubes arranged orthogonally.

8. The muon detector of claim 6, wherein the scintillator assembly comprises parallel scintillator plates disposed on opposite sides of the trajectory determination system.

9. The muon detector of claim 7, wherein the two or more layers is between 4 and 10 layers.

10. The muon detector of claim 6, wherein each layer of the two or more layers of muon drift tubes comprises two layers of muon drift tubes.

11. The muon detector of claim 6, wherein the trajectory determination system comprises two or more layers of charged particle detectors comprising a plurality of position sensitive strips selected from a group consisting of scintillator bars, silicon strips, resistive plate chambers, drift tubes, drift chambers, muon detector chambers, and scintillator fibers.