No abstract

Recently the technological linear electron accelerators with the energy up to 10 and 25 MeV and the pulse current up to 1A have been developed and put into operation in the "Accelerator" R&D Production Establishment of the National Science Center, Kharkov Institute of Physics and Technology [1]. The zone of the technological object irradiation by the accelerated electrons is created by the magnetic scanning system. Wide-aperture (50 x 200mm) magneto-induction position monitor has been designed to control the electron beam position. Signals from the monitor are used in the accelerator control system.

To increase the reliability of operation and simplify the precise tuning of the beam it is proposed to upgrade the output part of the accelerator "EPOS" NSC KIPT that operates in the range of electron energies 25…35 MeV and beam power up to 12 kW. An additional collimator, beam profile scanner and a wide aperture beam current monitor is offered to install. It is also proposed to upgrade the target station, which will improve the quality of irradiation and improve working conditions for personnel.

A high-current two-section pulsed electron linear accelerator (ELA) "EPOS" has been in successful operation at "Accelerator" R & D Production Establishment, NSC KIPT, for a few years. Its main parameters are the current pulse length -4 µs, the pulse current 0.4 to 1 A, the pulse recurrence rate -150 Hz, the electron energy -up to 30 MeV. To provide a safe beam guiding, four-winding magnetic induction monitors were devised, making possible measurements of the position of beam current center relative to the accelerator axis with an error of ±0.5 mm at the input and output of the second accelerating section [1]. At present, the "Accelerator" specialists have developed a compact two-section ELA "KUT-20", at the output of which a similar magnetic induction monitor is installed. Below, we present the results of bench calibration of the monitor as well as the experimental results of measuring-channel operation at the "EPOS" accelerator. The possibility of determining the second moment, which characterizes the difference of the beam cross section from its axially symmetric section, is demonstrated [2,3]