Scintillation detector with sleeved crystal boot

Details Scintillation detector with sleeved crystal boot Scintillation detector with sleeved crystal boot

G - Physics

01

T

G01T 1/20 (2006.01) G01V 5/04 (2006.01)

Patent

CA 2212273

A scintillation detector (10) includes a scintillation crystal (14) and-a shock absorbing member (76) circumscribing the crystal (14). A sleeve (98) circumscribes the shock absorbing member (76) which, in turn, is circumscribed by a housing (12). The sleeve (98) provides for substantial controlled radial loading on the crystal (14). A method of manufacturing the detector (10) includes placing the crystal (14) and shock absorbing member (76) into the sleeve (98), compressing the sleeve 98 and inserting the compressed sleeve (98) into the housing (12) such that the sleeve (98) substantially maintains its compression. The radial stiffness causes vibration induced counts to occur at an excitation frequency which is above the operational bandwidth of the radiation measurements, thereby excluding vibration induced counts for radiation measurements.

Un détecteur à scintillation (10) comprend un cristal à scintillation (14) et un membre amortisseur (76) qui entoure le cristal (14). Un manchon circonscrit le membre amortisseur.(76) qui, à son tour, est circonscrit par un logement (12). Le manchon applique une charge radiale contrôlée importante sur le cristal (14). Une méthode de fabrication du détecteur (10) comprend le placement du cristal (14) et du membre amortisseur (76) dans le manchon (98), la compression du manchon 98 et l'insertion du manchon comprimé (98) dans le logement (12) de façon que le manchon (98) conserve substantiellement sa compression. La raideur radiale provoque des coups induits par vibration qui surviennent à une fréquence d'excitation qui est au-dessus de la largeur de bande opérationnelle des mesures de rayonnement, ce qui les exclut des coups induits par vibration dans les mesures des rayonnements.

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