Title :
Performance results for scintillation detectors for high temperature environments including MWD
Author :
Dayton, R. ; Mayhugh, M. ; Papp, M. ; Parkhurst, P. ; Schreiner, R.
Author_Institution :
Bicron Corp., Newbury, OH, USA
Abstract :
Sheet reflectors and elastomeric potting materials have become available for packaging NaI(Tl) scintillation detectors. The problem of compatibility of these materials with NaI(Tl) in the high-temperature encountered in oil well applications is discussed. Specially treated systems that are compatible with NaI(Tl) to at least 200 degrees C are described. Their performance is as good as that of traditional packed-powder systems, with only a 5 to 10% pulse height drop during initial exposure to 180 degrees C. Additional data to 200 degrees C show similar stable results, indicating potential application in the harsh MWD (measurement-while-drilling) environment.<>
Keywords :
geophysical equipment; packaging; scintillation counters; 180 degC; 200 degC; NaI:Tl; elastomeric potting materials; high temperature environments; measurement-while-drilling; oil well applications; scintillation detectors; sheet reflectors; Crystalline materials; Crystallization; Packaging; Powders; Scintillation counters; Sheet materials; Solid scintillation detectors; Stability; Temperature; Welding;
Journal_Title :
Nuclear Science, IEEE Transactions on
