A. S. Alimov

Performance of the 6 MeV injector for the Moscow racetrack microtron

Abstract The 6 MeV injector for the Moscow racetrack microtron is described. The work presents the accelerator description, the rf power supply system and results of the computer simulation. The method of injector tuning and experimental results are discussed.

Operational experience with room temperature continuous wave accelerator structures

Abstract The paper reports the results of the computer simulation of parameters of the on-axis coupled accelerator structure for the continuous wave racetrack microtron. The operational experience with the accelerating sections on the basis of the on-axis coupled structure is described.

A compact industrial CW electron LINAC

We have built an inexpensive, room temperature Continuous Wave LINear electron ACcelerator, a CWEL, which is compact, reliable, and safe and can form the basis of a mobile irradiation unit, to produce 0.5-2.0 MeV, 10-30 mA, and 10-30 kW electron beams. We have improved our present CWEL by: (1) decreasing the injection energy and eliminating the bunching system; (2) maximizing the shunt impedance; and (3) simplifying the RF power supply system. We present our CWEL experimentally and sketch our modified design.

High-Power CW Linac for Food Irradiation

The continuing high profile food poisoning incidents are beginning to attract food processors using electron and gamma-ray sterilization technologies. The present method of choice uses radioactive isotopes but high-power electron particle accelerators are proving an increasingly attractive alternative. We are developing a family of compact industrial continuous wave linear accelerators which produce electrons with energies from 600 keV in increments of approximately 600 keV and with beam power of 30 kW increasing in increments of 30 kW. Here, we describe the performance of our 1st section that accelerates 15 keV gun electrons to relativistic energies and then we sketch the design of the less demanding subsequent sections that we are now constructing.

A high-intensity bremsstrahlung source for investigating radiation stability of optical samples for excimer laser windows

A bremsstrahlung X-ray source (hv ≤ 600 keV) was developed on the basis of CW electron LINAC. It provides an absorbed dose rate of ∼30 Gy/s within an area of ∼2.5 cm2. The radiation stability of quartz glasses and crystals for excimer lasers windows was investigated.

Compact linear electron accelerator for radiation technologies

A prototype of a commercial compact continuous-beam linear electron accelerator has been designed and constructed. With its energy of 600 keV and a beam with 30 kW maximum power, the accelerator can be used in various radiation technologies. Its compact size, easy operation, reliability, wide adjustment range for the main parameters, and possible local shielding allow it to be integrated into the majority of radiation technology processes.

A Continuous-Wave Linear Accelerator with an Output Electron Energy of 600 keV (Average Beam Current of 50 mA)

We describe a compact continuous-wave linear accelerator for industrial applications with an output electron energy of 600 keV, average beam current of 50 mA, and average beam power of 30 kW. The electron gun, beam dynamics, accelerating structure, and the RF-system design were modeled. After manufacturing, assembling, and tuning, the accelerator was started and the design parameters were achieved.

Effect of the coupling slots on beam dynamics in accelerator structure of Moscow CW RTM

We detected a strong coupling slots effect on the transverse beam dynamics for an on-axis coupled accelerator structure. This effect is explained by the transverse magnetic field exited on the axis of coupling cells and providing intercell coupling. We suggested a method to compensate for the coupling slots effect with the external magnetic field. Transition radiation was used to get beam size and position in the course of experiments presented below.

Compact low energy CW linac with high beam current

The present paper deals with the experimental investigation of electron capturing, design of a simple RF power system for multi-section accelerator, and beam acceleration at the prototype accelerator with two accelerator sections.

A technique for measuring and tuning the accelerating sections

A technique has been developed for measuring and tuning one of the accelerating sections based on a biperiodic structure with on-axis coupling cells for a 1.5-GeV double-sided racetrack microtron before and after the section is brazed. The technology and results of tuning of the microwave power input coupler for the accelerating section are described.