| Paper |
Title |
Page |
MOOMMH02 |
First Ion Beams Extracted from a 60 GHz ECR Ion Source Using Polyhelices Technique |
|
| |
- T. Lamy, J. Angot, J. Jacob, P. Sole, T. Thuillier
LPSC, Grenoble Cedex, France
- M.I. Bakulin
GYCOM Ltd, Nizhny Novgorod, Russia
- F. Debray, J.M. Dumas, C. Grandclement, P. Sala, C. Trophime
LNCMI, Grenoble Cedex, France
- A.G. Eremeev, I. Izotov, B.Z. Movshevich, V. Skalyga
IAP/RAS, Nizhny Novgorod, Russia
|
|
| |
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.
|
|
|
Slides MOOMMH02 [8.061 MB]
|
|
| |
TUOBMH01 |
The 60 GHz 300 kW Gyrotron System for ECR Ion Source of New Generation |
|
| |
- M.I. Bakulin, Z.Sh. Gasajniev
GYCOM Ltd, Nizhny Novgorod, Russia
- A.V. Chirkov, G.G. Denisov, A.G. Eremeev, B.Z. Movshevich, M.Y. Shmelyov
IAP/RAS, Nizhny Novgorod, Russia
- T. Lamy
LPSC, Grenoble Cedex, France
|
|
| |
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.
|
|
|
|
Slides TUOBMH01 [1.589 MB]
|
|
| |
TUOBMH02 |
Millimeter Wave Microwave Sources for Electron Cyclotron Resonance Ion Sources |
|
| |
- G.G. Denisov, Yu.V. Bykov, A.G. Eremeev, I.G. Gachev, M.Yu. Glyavin, V.V. Holoptsev, S.V. Samsonov, E.M. Tai
IAP/RAS, Nizhny Novgorod, Russia
- E.A. Soluyanova
GYCOM Ltd, Nizhny Novgorod, Russia
|
|
| |
Two kinds of microwave sources (gyro-type devices) applicable for use in ECR ion sources are described: microwave oscillators and amplifiers. Gyrotron oscillators are capable to provide very high power (up to 1MW in CW regime) at any frequency in the millimeter wavelength range. Gyrotrons sources of moderate power are already used in several ion source setups where requested frequency and power are 24 GHz; 28 GHz and 10-15 kW/CW correspondingly. Usually gyrotron oscillator operates at one definite frequency. For special request a gyrotron can be designed for operation at two (three) frequencies or with some frequency tuning. Some pulse power gyrotrons (e.g.60 GHz/300kW) are also now under study to be applied in ion sources. Gyro-amplifiers have an instant frequency band of an amplified signal. Recent result on this activity at IAP includes realization of a CW Ka-band gyro-TWT. The best performance of this tube was obtained using an electron beam with voltage of (20+20 kV) and current of 1.4 A. In the regime of maximum instantaneous bandwidth it delivers output power within a frequency interval of 2 GHz in Ka-band with a maximum power of 7 kW. One more setup includes a Ka-band pulsed amplifier with a peak power of up to 150 kW and bandwidth of about 10% capable for operation with 10% duty factor. The gyro-TWTs are based on DC oil-cooled solenoids and single-stage depressed collectors.
|
|
|
|
Slides TUOBMH02 [5.075 MB]
|
|
| |