METHOD FOR RADIAL LOCATION AND MOUNTING OF SCINTILATING DETECTOR GLASS CRYSTAL
Publication Date: 2015-Oct-09
The IP.com Prior Art Database
A technique to radially locate and mount a scintillation detector glass crystal is disclosed The technique employs a polytetrafluoroethylene PTFE U Cup style seal to radially locate the glass crystal in a housing of the scintillation detector The PTFE U Cup seal slides over a top of the glass crystal The cup seal centers and locates the glass crystal radially within the housing
The present disclosure relates generally to a scintillation detector and more particularly to a technique for radially locating and mounting a scintillation detector glass crystal.
A scintillator is a material that exhibits property of luminescence when excited by an ionizing radiation. The scintillator is generally made up of glass crystals. A scintillation detector includes a scintillator coupled to an electronic light sensor, such as, a photomultiplier tube (PMT), photodiode, or silicon photomultiplier. The glass crystals are coated with white polytetrafluoroethylene (PTFE) to optimally reflect light generated by the scintillation detector.
For effective functioning of the scintillation detector, the glass crystals are required to be optimally located in a tube of the scintillation detector, such that the glass crystals are resistant to outside impact. Further, PTFE coating on the glass crystals is delicate and needs to be protected while radially locating the glass crystals in the tube. Furthermore, the glass crystals are required to resist shock and vibrations of higher order resonance frequency.
A conventional technique employs a PTFE coated steel shim stock wrapped around the glass crystals for their protection. Multiple radial springs are also inserted around the glass crystals and the protective shim stock to center the glass crystals inside housing. However, such a system is cumbersome and provides scratches on either a teflon tape or the glass crystals.
It would be desirable to have a technique that mounts the glass crystals of the scintillation detector inside the housing with minimal clearance.
BRIEF DESCRIPTION OF DRAWINGS
Figure 1 depicts a polytetrafluoroethylene U-cup seal slid over a glass cry...