Oil well logging
For oil well logging, Hamamatsu offers dozens of different ruggedized photomultiplier tubes. These PMTs feature a special bialkali photocathode that is highly temperature resistant, allowing the detector to be used with downhole tools at deeper drilling depths. This high-temperature photocathode also offers stable operation and long life at temperatures up to 90℃, 175 ℃, or 200℃. (For example, Hamamatsu’s newest high-temp photocathode can operate for more than 1000 hours at up to 200℃.) Furthermore, Hamamatsu’s ruggedized PMTs are designed with highly shock/vibration -resistant electrode structures that ensure reliable operation under harsh conditions.
Please note that if you do not find a PMT on this website that meets your needs, Hamamatsu would be happy to discuss with you a customized product (tube or assembly) for your unique requirements.