The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 08, 2011
Filed:
Dec. 29, 2007
John Simonetti, Hamilton, NJ (US);
Joel L. Groves, Leonia, NJ (US);
Wolfgang Ziegler, Hightstown, NJ (US);
Arthur D. Liberman, Palo Alto, CA (US);
Christian Stoller, Princeton Junction, NJ (US);
John Simonetti, Hamilton, NJ (US);
Joel L. Groves, Leonia, NJ (US);
Wolfgang Ziegler, Hightstown, NJ (US);
Arthur D. Liberman, Palo Alto, CA (US);
Christian Stoller, Princeton Junction, NJ (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A radiation detector operating at high temperatures is shown comprising a scintillating material for producing light when excited by incident radiation, a photocathode, and an electron multiplier. The photocathode is deposited directly onto the surface of the scintillating material that is oriented toward the electron multiplier. Depositing the photocathode directly on the surface greatly decreases photon loss which is a problem of prior art systems. In a preferred embodiment, a metal flange is hermetically sealed to the scintillating material and this is fusion welded to the electron multiplier to create a vacuum envelope. This invention is particularly useful in noisy environments such as downhole in a drilling operation.