Title : 
Study of Hamamatsu mesh dynode photomultiplier tubes for potential use with the ZEUS detector
         
        
            Author : 
Smith, G.R. ; Mayer, J.K. ; Durocher, J.J.G.
         
        
            Author_Institution : 
Dept. of Phys., Manitoba Univ., Winnipeg, Man., Canada
         
        
        
        
        
        
        
            Abstract : 
Tests have been conducted on Hamamatsu R2021 planar mesh dynode photomultiplier tubes in 12- and 15-stage versions with 25- and 40-mm envelope diameters. Dark current, overall gain and dynamic range of the tubes have been determined, and the behavior of the tubes magnetic fields up to 0.05 T has been studied. It is shown that with suitable modifications to the structure of calorimeter units of the ZEUS detector, these tubes will perform adequately in that application.<>
         
        
            Keywords : 
photomultipliers; scintillation counters; Hamamatsu mesh dynode photomultiplier tubes; R2021; ZEUS detector; calorimeter units; dark current; dynamic range; overall gain; Dark current; Detectors; Dynamic range; Electrons; Iron; Magnetic fields; Photomultipliers; Poles and towers; Protons; Superconducting magnets;
         
        
        
            Journal_Title : 
Nuclear Science, IEEE Transactions on