Broad-band beam buncher

Patent · Tue Jan 28 04:00:00 EST 1986

OSTI ID:5949060

Goldberg, D A; Flood, W S; Arthur, A A; Voelker, F

This patent describes a broad-band beam buncher. This beam buncher consists of: a housing adapted to be eacuated, an electron gun in the housing for producing a beam of electrons, buncher means in the housing forming a buncher cavity which has an entrance opening for receiving the electron beam and an exit opening through which the electron beam passes out of the buncher cavity, a drift tube electrode in the buncher cavity and disposed between the entrance opening and the exit opening with first and second gaps between the drift tube electrode and the entrance and exit openings, the drift tube electrode which has a first drift space through which the electron beam passes in traveling between the entrance and exit openings, modulating means for supplying an ultrahigh frequeny modulating signal to the drift tube electrode for producing velocity modulation of the electrons in the electron beam as the electrons pass through the buncher cavity and the drift tube electrode between the entrance opening and the exit opening, drift space means in the housing forming a second drift space for receiving the velocity modulated electron beam from the exit opening, the velocity modulated electron beam being bunched as it passes along the second drift space, the drift space means has a discharge opening through which the electron beam is discharged from the second drift space after being bunched therein, the modulating means containing a signal source for producing an ultrahigh frequency signal, a transmission line connected between the signal source and the drift tube electrode, and terminating means connected to the drift tube electrode for terminating the transmission line in approximately its characteristic impedance to afford a broad response band with minimum 6 variations therein.

• Assignee: Dept. of Energy
• Patent Number(s): US 4567452
• OSTI ID: 5949060
• Country of Publication: United States
• Language: English

Related Subjects

43 PARTICLE ACCELERATORS
430300* -- Particle Accelerators-- Auxiliaries & Components
BEAM BUNCHERS
BEAMS
DESIGN
DRIFT TUBES
ELECTRODES
ELECTRON BEAMS
ELECTRON GUNS
FREQUENCY MODULATION
LEPTON BEAMS
MODULATION
PARTICLE BEAMS
SIGNALS
SPACE DEPENDENCE
VELOCITY