Development of a New Generation of Coolers with a Hollow Electron Beam and Electrostatic Bending

2006 ◽  
Author(s):  
V. V. Parkhomchuk
Keyword(s):  
Electron Beam ◽  
New Generation ◽  
Hollow Electron Beam

Some Issues of Repairing Manned Space Vehicles in Outer Space Using Electron Beam Welding

2021 ◽  
Vol 315 ◽  
pp. 101-105
Author(s):  
Leonid M. Lobanov ◽  
E.A. Asnis ◽  
Ye.G. Ternovy ◽  
Yu.V. Zubchenko ◽  
I.I. Statkevich ◽  
...  
Keyword(s):  
Electron Beam ◽  
Open Space ◽  
Electron Beam Welding ◽  
Outer Space ◽  
Beam Power ◽  
Space Vehicles ◽  
Automatic Mode ◽  
Manned Space ◽  
Robotic Devices ◽  
New Generation

A new generation of electron beam tool for welding during assembly and repair-restoration works on board of manned space vehicles in open space was demonstrated. The tool includes a small-sized electron beam gun (EBG) with an electron beam power of up to 2.5 kW and a high-voltage power source with a voltage of 10 kV. The design of the electron-optical system of EBG allows using it in both manual as well as in automatic mode applying robotic devices. Applying the manufactured EBG and manipulator, in vacuum chamber the works on simulating the repair of a spacecraft’s section of aluminum 2219 alloy were carried out. The obtained results of studying the structure and mechanical characteristics and also sealing of welds confirmed the high quality of welded joints and a reliability of the technology for repairing a damaged fragment of a spacecraft's body using electron beam welding.

Filamentation instability of a self‐pinched hollow electron beam

1986 ◽  
Vol 29 (9) ◽  
pp. 3074-3083 ◽  
Author(s):  
Han S. Uhm ◽  
Thomas P. Hughes
Keyword(s):  
Electron Beam ◽  
Filamentation Instability ◽  
Hollow Electron Beam

Influence of the return current effects on the diocotron instability of a relativistic hollow electron beam

1989 ◽  
Vol 66 (1) ◽  
pp. 108-114
Author(s):  
Eun H. Choi ◽  
Han S. Uhm ◽  
Sun K. Song ◽  
Duk I. Choi
Keyword(s):  
Electron Beam ◽  
Return Current ◽  
Diocotron Instability ◽  
Hollow Electron Beam

ATOMIC PHYSICS RESEARCHES AT COOLER STORAGE RING IN LANZHOU

2009 ◽  
Vol 18 (02) ◽  
pp. 373-380 ◽  
Author(s):  
◽  
X. MA ◽  
X. H. CAI ◽  
X. L. ZHU ◽  
S. F. ZHANG ◽  
...  
Keyword(s):  
Electron Beam ◽  
Atomic Physics ◽  
Laser Cooling ◽  
X Ray ◽  
Density Distributions ◽  
Ion Interactions ◽  
Main Ring ◽  
Argon Ions ◽  
New Generation ◽  
Charged Ions

The commissioning of the cooler storage rings (CSR) was successful, and the facility provides new possibilities for atomic physics with highly charged ions. Bare carbon, argon ions, were successfully stored in the main ring CSRm, cooled by cold electron beam, and accelerated up to 1 GeV/u. Heavier ions as Xe 44+ and Kr 28+ were also successfully stored in the CSRs. Both of the rings are equipped with new generation of electron coolers which can provide different electron beam density distributions. Electron-ion interactions, high precision X-ray spectroscopy, complete kinematical measurements for relativistic ion-atom collisions will be performed at CSRs. Laser cooling of heavy ions are planned as well. The physics programs and the present status will be summarized.

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