Device and method for ion beam acceleration and electron beam pulse formation and amplification

Device for electron beam pulse formation and amplification comprising

• (a) an electron gun (6),
• (b) a high-frequency deflector (7),
• (c) a d.c. voltage deflector (8),
• (d) a collector (9) having an opposing field,
• (e) an output coupler (11) for coupling the power of the electron beam (14) to a consumer (12), and
• (f) a main collector (13) for taking up the residual power of the electron beam (14), components (a) to (g) of the device being arranged behind one another in the direction of the electron beam (14).

Method for ion beam acceleration carried out using a device that comprises an ion accelerator tank (1) having a central container axis (2) for guiding and accelerating a pulsed ion beam (14) in the container axis (2) and an electron beam pulse formation and amplification device (4) having an electron beam axis (5) for microstructuring and amplifying current pulses to supply the device for ion beam acceleration with high-frequency power, wherein

• the electron beam pulse formation and amplification device (4) is arranged with its electron beam axis (5) transverse and offset relative to the container axis (2) and produces an electron beam (14) by means of an electron gun (6) outside the ion accelerator tank (1), and
• by means of a high-frequency deflector (7) and a d.c. voltage deflector (8) over 50% of the electron beam current is deflected, at frequencies of from 100 MHz to 400 MHz, at regular intervals into a collector (9) having an opposing field in order to microstructure the electron beam (14), and
• a post-deflection accelerator (10), at an accelerator voltage of several 100 kilovolts, preferably from 200 to 400 kilovolts, guides the electron beam (14) into the ion accelerator tank (1), and
• accelerates the ion beam (3) by way of an output coupler (11).

Method for electron beam pulse formation and amplification that comprises the following method steps:

• production of an electron beam (14) by means of an electron beam gun (5),
• action upon the electron beam (14) of a high-frequency alternating field (20) with simultaneous high-frequency deflection of the electron beam (14),
• high-frequency extraction of up to 80% of the electron beam energy to a collector (9) having an opposing field,
• post-deflection acceleration of the high-frequency-modulated electron beam (14) to give electron beam pulses,
• decoupling of the high-frequency energy by way of an output coupler (11).

Device for high-frequency power amplification, especially for supplying a device having a cavity for ion beam acceleration with high-frequency power, comprising:

• a vacuum tank having a central tank axis for producing and accelerating a pulsed electron beam (14) along the tank axis, characterised in that
• an electron beam pulse formation and amplification device (4) is arranged with its electron beam axis (5) transverse and offset relative to a container axis (2) of an ion accelerator tank (1) and comprises outside the ion accelerator tank (1)
• (a) an electron gun (6),
• (b) a high-frequency deflector (7),
• (c) a d.c. voltage deflector (8),
• (d) a collector (9) having an opposing field, and
• (e) a post-deflection accelerator (10),
• and comprises inside the ion accelerator tank
• (f) a first gap and a second gap for coupling the power of the electron beam (14) to the ion beam (3),
• (g) a main collector (13) for taking up the residual power of the electron beam (14),
• components (a) to (g) of the device being arranged behind one another in the direction of the electron beam (14).