公开(公告)号：JPH0536372A

公开(公告)日：1993-02-12

申请号：JP33132491

申请日：1991-11-19

Applicant: BURLE TECHNOLOGIES

Inventor： FURETSUDO EI HERUBII

IPC: H01J43/18 ,  H01J43/04

Abstract: PURPOSE: To use a composite section photomultiplier tube for monitoring a radiated beam being incident into a large area region. CONSTITUTION: A composite section photomultiplier tube 10 has plural photomultiplier tube sections 14 in a single envelope, and regions, between photoelectric cathodes 24 and dynode cages 26 in the respective section, are separated from the other regions by shielding structure. The respective photoelectric cathodes act in cooperating with the corresponding diode cages, and one dinode 35 in the respective dinode cages is electrically independent from the other dinodes, also independently led outside the envelope. This can adjust the gains of the respective tube sections independently from the others, thereby making all section respond the same responses to a reference radiation signal.

公开(公告)号：JPH02288145A

公开(公告)日：1990-11-28

申请号：JP9992689

申请日：1989-04-19

Applicant: BURLE TECHNOLOGIES

Inventor： FURETSUDO EI HERUBII ,  GIRUBAADO ENU BATAAUITSUKU

IPC: H01J40/04 ,  H01J40/16 ,  H01J43/04

Abstract: PURPOSE: To accomplish improvement in collecting efficiency of a tube, reduction of a total transfer time, and miniaturization of a photomultiplier and the tube as a whole by comprising a plurality of concentric housing electrodes serving as sections of elliptic dome substantially. CONSTITUTION: A photo multiplier tube is constructed of an envelope 12, a face plate 14, a photoelectric emission cathode 16, a photomultiplier structure 18, the first dynode 20, a facing electrode structure 32, focusing electrodes 34, 36, 38, and an evaporator 42. Main segments, which are provided with faces tilted by tilting angles of at least 10 degrees and formed into ellipses or spheroids, are arranged from the photomultiplier part 18 to the photoelectric emission cathode 16 so that their diameters are increased in order while voltage is lowered in order. These focusing electrodes 32 form a precise electric field. In this way, collecting efficiency of the tube can be increased, a total transfer time can be reduced, and the photomultiplier tube 18 and the tube as a whole can be miniaturized.