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Multi-Charged Ion Source

#1496


Multi-Charged Ion Source Based on ECR Discharge in Heavy Gases Sustained by Powerful Gyrotron Radiation

Tech Area / Field

  • PHY-PLS/Plasma Physics/Physics
  • PHY-OTH/Other/Physics

Status
8 Project completed

Registration date
12.04.1999

Completion date
04.05.2005

Senior Project Manager
Glazova M B

Leading Institute
Russian Academy of Sciences / Institute of Applied Physics, Russia, N. Novgorod reg., N. Novgorod

Supporting institutes

  • VNIITF, Russia, Chelyabinsk reg., Snezhinsk\nVNIIEF, Russia, N. Novgorod reg., Sarov

Project summary

Proposed Project is aimed to the investigation of the physics of RF discharge in heavy gases, supported by powerful pulsed gyrotron radiation in the mirror magnetic trap under Electron Cyclotron Resonance (ECR) conditions and clarifying the prospects to use as a source of multi-charged ions (MCI) for various applications; in the first place we would like to specify MCI injectors of heavy particle accelerators.

At present in the Institute of Applied Physics the work has been started on the design of such a souce using gyrotron radiation (frequency 37.5 Ghz, power 100 kW) and mirror magnetic trap. First very encouraging have been obtained on the possibility to reach the record values of MCI current of highly ionized heavy particles. Within the Project it is supposed to use pulsed gyrotrons with 100 kW of output power operating at frequency 160 Ghz, wich allows to hope to produce plasma with the unique parameters (electron density up 1014–1015 cm-3 with electron energy within 1 keV) which seem to have good prospects for creating the new generation of pulsed MCI source. Indeed, an essential (more than by the order of magnitude compared to conventional sources) electfron density increase may result in the modification of plasma confinement regime in the magnetic trap. Realization of so called “quasigasdynamic” confinement regime provides plasma life-time in the mirror trap practically independent of plasma density which shifts ionization rate to higher numbers with the electron density increase and, correspondingly, increases the MCI current.

The main part of investigations within the Project will be performed using this installation currently under operation conditions with a number of additional modifications.Upgrading of the existing installations is aimed to the expanding of experimental abilities and, mainly, to the further development of X-ray and MCI diagnostic techniques. To increase the reliability of information on plasma parameters it is supposed to use as a rule a number of different diagnostics partly duplicate and partly supplementary to each other. Theoretical investigations will be aimed at the development of the model of ECR discharge with large energy input in heavy gases and to the design of most optimal schemes from the viewpoint of efficient MCI production.

In the course of the project realization a comprehensive investigation of ECR discharge in heavy gases with high energy input which was not available up to recent time will be performed. We hope to create laboratory model of pulsed MCI source capable of producing more than 1 A MCI current with an extreme charge numbers (e.g., Ar+16 or Xe+32). The result of project realization will be the design of the new type of efficient MCI source with cw operating regime based on ECR discharge provided by powerful gyrotron radiation of short mm wavelength range.


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