A method to enhance the sensitivity of photomultipliers for Air Cherenkov Telescopes by applying a laquer that scatters light
Journal
Nucl.Instrum.Meth. 518, 619, 2004
Abstract:
The sensitivity of photomultipliers (PMT) can be substantially increased by applying a light scattering lacquer doped with a Wavelength Shifter (WLS). Applying this method to the Electron Tubes (ET) 9116/17A PMT resulted in a good sensitivity in the short wave UV range as well as a 15-20% increase in QE above 350 nm. Details of the procedure and a simple model for the explanation of the enhancement are presented.