L. A. Mironenko

COMMISSION OF ELECTRON COOLER EC-300 FOR HIRFL-CSR

HIRFL-CSR, a new ion accelerator complex, is under construction at IMP, Lanzhou, China. It is equipped with two electron cooling devices. This article describes the commissioning of cooler at electron energy 300 keV. The cooler is one of the new coolers with some unique manufactured in BINP, Russia. It has a new electron gun producing a hollow electron beam, electrostatic bending and a new structure of solenoid coils at the cooling section. The test results of cooler obtained in Novosibirsk and Lanzhou are reported.

Vacuum photodetectors for e+e− collider detectors in BINP

Abstract The test results of vacuum phototriodes (VPT) and PMT with microchannel plates (MCPT) are described. About 3000 VPTs now operate successfully in the BINP collider detector. Some recent results on MCPT are presented, in particular tube counting rate capability and the effect of a thin Al film on tube noise. The first measurements of the hybrid PMT with a silicon diode were performed.

Commissioning of the accelerator-recuperator for the FEL at the Siberian Center for Photochemical Research.

A 100 MeV eight-turn accelerator-recuperator intended to drive a high-power infrared free-electron laser (FEL) is currently under construction in Novosibirsk. The first stage of the machine includes a one-turn accelerator-recuperator that contains a full-scale RF system. It was commissioned successfully in June 2002.

A project of accelerator-recuperator for Novosibirsk high-power FEL

The first stage of the Novosibirsk high-power free-electron laser (FEL) was commissioned in 2003. It is driven by a CW energy recovery linac. The next step will be the full-scale machine, a four-track accelerator-recuperator based on the same RF accelerating structure. This upgrade will permit to get shorter wavelengths in the infrared region and increase the average power of the FEL by several times. The scheme and some technical details of the project are set out. The installation will be a prototype for future multiturn accelerator-recuperators.

Status of the free electron laser for the Siberian centre for photochemical research

Abstract A high-power infrared free electron laser is under construction in Novosibirsk. As the full-scale machine seems to be complicated and quite expensive, the project was divided into two stages so that the first-stage machine can be assembled and commissioned as soon as possible. Main features of the project and the current status are described.

SR front ends of VEPP-4M storage ring

Abstract The VEPP-4M storage ring system of SR front ends is described. SR is released by means of 14 front ends. Eleven of them are intended for beamlines of experimental stations. One front end is technical. For the permanent stabilization of an orbit of a beam with respect to a coordinate and angle in the vertical direction, two monitoring front ends are used. They take out SR from emission regions, which are at a large distance from one another.

All-metal sealing elements for high-vacuum components

Abstract Development of high-vacuum technology in many areas of science and engineering requires vacuum equipment to be simpler in service and to take less expense for manufacture. A sealing element of a new design for high-vacuum equipment and brief results of tests of specimens of vacuum valves are presented in this article. A vacuum valve consists of a sealing unit in the form of a cassette and of a drive mechanism located in the atmosphere. Its advantages are lower expenses of manufacturing, low requirements of precision of manufacturing, and possible restoration of the sealing plate.