Device for detecting radiation and associated detection device

Patent metadata

Field	Value
Publication number	US-2018074214-A1
Application number	US-201515315628-A
Country	US
Kind code	A1
Filing date	Jun 1, 2015
Priority date	Jun 3, 2014
Publication date	Mar 15, 2018
Grant date	—

Abstract

A radiation-detecting device including at least two radiation detectors distributed in series along a support cable, each detector including an optically stimulated luminescence detection element which is optically coupled to at least one optical fiber, each optically stimulated luminescence detection element being held opposite a first end of the optical fiber by a mechanical part fixed to the support cable, the mechanical part being held in a flexible cable by a holding mechanism, second ends of each optical fiber leading to the same first end of the flexible cable.

First claim

1 - 17 . (canceled)

18 . A radiation-detecting device comprising:
at least two radiation detectors distributed in series along a support cable, wherein each detector comprises an optically stimulated luminescence detection element which is optically coupled to at least one optical fiber, each optically stimulated luminescence detection element being held opposite a first end of the optical fiber by a mechanical part fixed to the support cable, the mechanical part being held in a flexible cable by holding means which comprises a carrier cylinder made of a deformable solid material on which the optical fibers are wound, second ends of each optical fiber leading to a same first end of the flexible cable.

19 . The radiation-detecting device according to claim 18 , wherein the mechanical part which encloses the support cable comprises a first bore and a second bore aligned with each other, the optically stimulated luminescence detection element being fixed in the first bore and the optical fiber being fixed in the second bore.

20 . The radiation-detecting device according to claim 18 , wherein the optical fibers are helically wound.

21 . The radiation-detecting device according to claim 18 , wherein the deformable solid material is a polymer.

22 . The radiation-detecting device according to claim 18 , wherein a plurality of optical fibers is coupled to a same optically stimulated luminescence detection element, the plurality of optical fibers being gathered in a capillary pipe as a beam of optical fibers.

23 . The radiation-detecting device according to claim 18 , further comprising a grease layer that covers an internal wall of the flexible cable.

24 . The radiation-detecting device according to claim 18 , further comprising a polymer layer that covers an external wall of the flexible cable.

25 . The radiation-detecting device according to claim 18 , wherein a single mode optical fiber containing a plurality of fiber Bragg gratings is fixed in the mechanical part, the optical fiber having an end leading to the first end of the flexible cable.

26 . The radiation-detecting device according to claim 18 , wherein the support cable is a multi-strand wire.

27 . The radiation-detecting device according to claim 18 , wherein the flexible cable is an interlocked metal hose.

28 . The radiation-detecting device according to claim 18 , wherein nominal diameter of the flexible cable is between 4 mm and 100 mm.

29 . The radiation-detecting device according to claim 18 , wherein diameter of the core of a multimode optical fiber is between 100 μm and 200 μm.

30 . The radiation-detecting device according to claim 18 , wherein a second end of the flexible cable, opposite the first end, is closed by a tip.

31 . The radiation-detecting device according to claim 30 , wherein the tip comprises a microphone.

32 . A radiation-detecting system in a facility, the system comprising:
a radiation-detecting device and introduction means for introducing the radiation-detecting device into the facility, wherein the radiation-detecting device is a device according to claim 30 , and wherein the introduction means comprises a turntable on which the flexible cable is wound, an injecting tube which opens into the facility and in which the tip of the flexible cable is engaged, and propulsion means for propelling the flexible cable into the facility.

33 . The radiation-detecting detecting system according to claim 32 , wherein the propulsion means comprises a motor and mechanical means connected to the motor and configured to rotate the turntable once a propulsion command is applied to the motor.

34 . The radiation-detecting detecting system according to claim 32 , wherein a multi-fiber connector fixed to the turntable connects both ends of the optical fibers to a measuring instrumentation configured to stimulate the optically stimulated luminescence detection elements and to read a luminescence which results from radiation exposure.

Assignees

• Commissariat Energie Atomique

Inventors

• Magne Sylvain
• Boudergui Karim
• Makil Hamid

Classifications

• G01T1/203

  the detector being made of plastics · CPC title

• G01T1/2012 Primary

  using stimulable phosphors, e.g. stimulable phosphor sheets · CPC title

• G01T7/00

  Details of radiation-measuring instruments · CPC title

• G01T1/201

  using scintillating fibres · CPC title

• G01T1/2002

  Optical details, e.g. reflecting or diffusing layers · CPC title