EP 0336850 B1 19920923 - LINEAR ACCELERATOR WITH SELF-FOCALISING CAVITIES, WITH HIGH ELECTRON CAPTURE RATE AT LOW INJECTION VOLTAGES
Title (en)
LINEAR ACCELERATOR WITH SELF-FOCALISING CAVITIES, WITH HIGH ELECTRON CAPTURE RATE AT LOW INJECTION VOLTAGES
Publication
Application
Priority
FR 8804707 A 19880408
Abstract (en)
[origin: EP0336850A1] Good grouping and good capturing efficiency properties of a first resonating cavity (10) of an accelerator (1 to 5) are associated with self-focusing properties of this cavity associated with a second following cavity (11), by modifying (17, 18) the law for the modulus of the electric field set up inside this cavity. It is arranged for the amplitude of this field to be smaller in a first part (15) of this cavity than in a second part (16). It is shown that in the first part of this cavity the electrons then group together naturally, and that they may subsequently undergo, in the second part of the cavity, an acceleration and then a focusing including entry into the following cavity affecting them all homogeneously. In short, this enhances the capture rate and the electron density of the beam accelerated from a low-voltage gun (1). <IMAGE>
IPC 1-7
IPC 8 full level
H01J 23/20 (2006.01); H05H 7/18 (2006.01); H05H 9/00 (2006.01)
CPC (source: EP US)
Designated contracting state (EPC)
CH DE GB LI NL SE
DOCDB simple family (publication)
EP 0336850 A1 19891011; EP 0336850 B1 19920923; DE 68902944 D1 19921029; DE 68902944 T2 19930311; FR 2629976 A1 19891013; FR 2629976 B1 19910118; JP 2869084 B2 19990310; JP H02148600 A 19900607; US 4975652 A 19901204
DOCDB simple family (application)
EP 89400963 A 19890407; DE 68902944 T 19890407; FR 8804707 A 19880408; JP 9050089 A 19890410; US 33289489 A 19890404