In 2006 a team comprised of C.J. Staples, W.G. Lawrence, J.F. Christan, and F.L. Augustine set out to determine whether there was an alternative to the traditional PMT or Geiger Counter in measuring gamma radiation in harsh environments. Using what they called a solid-state photomultiplier (SSPM) which was the precursor to the silicon photomultiplier (SiPM)…
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Building Gamma Scintillation Detection Downhole Tools for High Temperature
Putting delicate scintillation detector crystals into a shock resistant hermetic casing, or shielding a photomultiplier tube (PMT) from background radiation all while drilling is one thing, ensuring that the tool can continue to operate in temperatures well above 165C is quite another matter. When Flashpoint first began to distribute its NaI(Tl) crystals and PMT tubes…
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