We outline the history of the method of forming ion beams by interaction with an electron beam. The method of forming this beam and the features of its application are called 'electron cooling." Described is the development of this method from the initial idea presented by its author, the first director of the Institute of Nuclear Physics (INP) in Novosibirsk GI Budker, to its implementation and dissemination in accelerator laboratories worldwide.

Василий Васильевич Пархомчук (к шестидесятилетию со дня рождения), Барков Л.М., Димов Г.И., Диканский Н.С., Кругляков Э.П., Кулипанов Г.Н., Логачев П.В., Мешков И.Н., Пестриков Д.В., Салимов Р.А., Сидоров В.А., Скринский А.Н., Сухина Б.Н.

Present status of an accelerator mass spectrometry (AMS) facility at BINP is described. The AMS facility with addition electric and magnetic analyzers into a terminal of a tandem accelerator is designed for precise analyses of carbon isotopes at extremely low concentration levels.

New electron cooling device was constructed for LEIR accumulator ring according to ILHC project at CERN. The cooler was designed, manufactured and completely tested with electron beam at BINP (Novosibirsk, Russia). Special features of the device and the results obtained are presented in the paper.

Николай Сергеевич Диканский (к шестидесятилетию со дня рождения), Балакин В.Е., Барков Л.М., Димов Г.И., Кругляков Э.П., Кулипанов Г.Н., Мешков И.Н., Салимов Р.А., Сидоров В.А., Скринский А.Н., Сухина Б.Н., Пархомчук В.В., Пестриков Д.В.

Results of the gun and collector simulation for the new developing electron cooling system EX-35 and EX-300 are presented. Gun microperveance is 2.5 mkA/V^3/2. Output transverse temperature of the electron beam is 0.1 eV.

This work presents an improvement of the collector's efficiency by addition of built-in titanium electrodes, their influence on vacuum conditions and on secondary electron emission.

Several projects for ion colliders are currently under consideration in China and Japan. A draft project for an electron cooling system at an energy of electrons of 350keV is presented. There is an easy opportunity to develop it up to 1.5MeV. Based on INP technologies this self-contained electron cooling system includes both a gun and a collector with a magnetic system and a relevant power supply with high-voltage terminals.

Some technical advances and ideas, which allow, the construction of highly reliable, simple and cheap subsystems for electrostatic accelerators and other high voltage devices, are described. The described subsystems were tested during their extensive running for several years on a series of the accelerators ION-1500, ION-300. They are a small sized high efficiency system for a power supply via a big isolating gap which is based on a high frequency resonant transformer with a low magnetic couple factor 0.1-0.3 (its characteristics are: 2.2 kW, efficiency 90%, 6 cm isolating gap for 500 kV); a system for highly efficient medium and low-power regulators based on magnetic amplifiers and working at high frequency power delivered by the above mentioned system; an intelligent multifunctional single-board noiseproof controller LOCUS placed under high potential is linked with the central computer by a fiber optic link

Ion accelerators intended for application to electronics industry, surface modification and other technologies are described. A series of the accelerators are characterized by horizontal ion beam position. The energy ranges from 20 keV to 1.5 MeV. In the frame of this project, the ION-300, ION-1500 installations were designed, built and successfully tested. The main rectifier and high voltage terminals of the accelerators have a power supply of the increased frequency. The high voltage terminals are supplied with a power up to 2.2 kW using special small-size resonant transformers. The accelerators are provided with ion beam separation on full energy, oil-free vacuum, high voltage isolation (SF6), and an intelligent automatic control system with an IBM PC host computer. A special set of technical, hardware and software decisions allows us to meet the reliability requirements

At INP there has been designed and is now under assembly and commissioning a series of high voltage ion accelerators including three variants, differing in energy and max current of single charged ions: at the range IOO-300 keV, up to5 mA, ION-300 installation; at the range 200-600 kcV, up to 2 mA, ION-600 installation; at the range 500-1.500 keV, up to 1 mA, ION-l.500 installation. Theaccelerators are equipped with oil-frecvacuum, ion separation on the total energy, microcomputer (PC) control. A set of accessory sources provides for a wide ions spectrum. This series of the accelerators is distinguished for unification of main parts and units in all the variants. According to the type of the employed end station the ion nccclcrntors can find application in microphotoelectronics, microclcctronics, for modifying surfaces of materials and other purposes. Rudkcr Institute of Nuclear Physics (INP), Novosibirsk, Russia is involved with High Energy Physics, Plasma Physics and Particle Accelerators Physics including electron and ion accelerators for industry applications. In particularly, now INP is designing a new industrial particle accclcrators set with common name “ION”. This paper is devoted to brief description of main fcaturcs and essential distinctions of “ION” set.

In the report presented here the recent developments on electron cooling at the iluclear Physics Institute, Novosibirsk are given. Problems of getting of electron beam with low effective temperature, suitable for fast electron cooling, are discussed.

The velocity distribution of electrons in an intense beam shaped in an electrostatic accelerating device is strongly anisotropic: the electron longitudinal-velocity scatter is much less than that of the transverse velocities. When such a beam moves in a drift chamber, the longitudinal and transverse temperatures become equalized. This process slows down substantially when the beam is shaped and transported in a device with a longitudinal magnetic field. The present paper is devoted to an investigation of this effect.