Paper | Title | Page |
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MOOMMH02 |
First Ion Beams Extracted from a 60 GHz ECR Ion Source Using Polyhelices Technique | |
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Funding: We acknowledge the support of the LNCMI-CNRS, member of the European Magnetic Field Laboratory (EMFL) and the International Science and Technology Center (project#3965). The first 18 GHz ECR plasma in an ion source prototype with a magnetic structure using high field magnets techniques was performed in 2012. The particularity of such a prototype is the establishing of a topologically closed ECR zone in a cusp configuration. During the current increase to get a closed 60 GHz zone, a failure appeared at 21000 A in one helix among the four. After the modification of the cooling circuit, the prototype was able to accept up to 26000 A allowing high frequency experiments. In the same time, a 60 GHz - 300 kW pulsed gyrotron has been successfully built and installed in Grenoble by IAP-RAS and Gycom company. The first 60 GHz ECR plasma has been produced in April 2014, the first pulsed beams have been extracted and analyzed. The experimental results obtained will be presented along with the perspectives of such developments. |
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Slides MOOMMH02 [8.061 MB] | |
TUOBMH01 |
The 60 GHz 300 kW Gyrotron System for ECR Ion Source of New Generation | |
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The 60 GHz Gyrotron system was specifically designed to meet the requirements of the ECR ion source prototype for production of radioactive multicharged ion beams at the Laboratoire de Physique Subatomique et de Cosmologie (LPSC). This system provides microwave power smoothly regulated from 20 kW to 300 kW in pulses from 0.05 to 1 ms with a repetition rate up to 3 Hz. The system includes a gyrotron, liquid-He cryomagnet, microwave quasioptical transmission line, whole set of power supplies, embedded controller, hard-wired interlocks, water-cooling subsystem. Architecture of the gyrotron system, control software, the user interface, the main system parameters, and performance in respect to output power stability will be described in the presentation. | ||
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Slides TUOBMH01 [1.589 MB] | |