What is the difference between ceramic and glass electron multipliers?
Historically glass multipliers have been lower in price than ceramic types however that difference has been eroded in recent years and the ceramic ones are now only slightly more expensive. However if price is the main consideration the glass ones are still cheaper. Technically the two types are very similar in performance. The ceramic ones are more sturdy and robust particularly on the larger coned types. Also the ceramic ones are more easily built into arrays. The mounting of the glass multipliers needs to be done with great care to ensure the cones are not damaged or broken.