Ruggedized scintillation detector

G - Physics – 01 – T

Patent

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358/31

G01T 1/202 (2006.01) G01T 1/20 (2006.01)

Patent

CA 2016987

A scintillation detector capable of withstanding high shock and/or high temperatures, comprises a scintillation crystal, a casing for the crystal, and a shock absorbing boot interposed between the crystal and the casing. The boot is characterized by a plurality of radially outwardly directed protrusions for engaging the casing. The protrusions define therebetween unfilled spaces to provide room into which the boot may expand at high temperatures. The protrusions may be longitudinally or radially extending ribs and the ribs may be generally rectangular or triangular in cross section. A reflector surrounds the crystal and preferably is in the form of a thin poroussheet of polytetrafluoroethylene (PTFE) wrapped tightly around the crystal. The boot preferably has a substantially continuous cylindrical interior surface for engaging the thin porous PTFE sheet to avoid high pressure concentrations.

Divulgation d'un détecteur de scintillation capable de résister à des chocs importants et/ou à des températures élevées, comprenant un cristal, un boîtier pour le cristal et une gaine absorbant les chocs, placée entre le cristal et le boîtier. La gaine est caractérisée par un ensemble de protubérances radiales dirigées vers l'extérieur, de manière à maintenir le boîtier. Il existe des espaces libres entre les protubérances, qui permettent à la gaine de se dilater à haute température. Les protubérances peuvent être des nervures longitudinales ou radiales, et ces nervures ont en général une section transversale de forme rectangulaire ou triangulaire. Un réflecteur entoure le cristal et se présente de préférence sous forme d'une fine feuille poreuse de polytétrafluoroéthylène (PTFE) enveloppant de près le cristal. La gaine a de préférence une surface intérieure cylindrique substantiellement continue afin de pouvoir maintenir la fine feuille poreuse de PTFE et éviter de créer des zones de pressions importantes.

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