ECRIS2016 - List of Keywords (diagnostics)

Paper	Title	Other Keywords	Page
MOCO01	Innovative Schemes of Plasma Heating for Future Multiply-Charged Ions Sources: Modeling and Experimental Investigation	ion, plasma, electron, ECR	14
	D. Mascali, C. Altana, G. Castro, L. Celona, S. Gammino, O. Leonardi, M. Mazzaglia, D. Nicolosi, R. Reitano, F.P. Romano, G. Sorbello, G. Torrisi INFN/LNS, Catania, Italy M. Mazzaglia, R. Reitano Universita Degli Studi Di Catania, Catania, Italy F.P. Romano IBAM-CNR, Catania, Italy G. Sorbello University of Catania, Catania, Italy
	The application of plasma heating methods alternative to the direct Electron Cyclotron Resonance coupling, such as the Electron Bernstein Waves (EBW) heating, is already a reality in large-size thermonuclear reactors. These plasma waves give the unique opportunity to largely overcome the cutoff density. EBW heating in compact traps such as ECRIS devices is still a challenge, requiring advanced modelling and innovative diagnostics. At Istituto Nazionale di Fisica Nucleare-Laboratori Nazionali del Sud (INFN-LNS), the off-ECR heating (driven by Bernstein waves) has produced a highly overdense plasma. Interferometric measurements say the electron density has overcome by a factor ten the cutoff density at 3.76 GHz. More advanced schemes of wave launching have been designed and implemented on the new test-bench called Flexible Plasma Trap, operating up to 7 GHz-0.5 T, in ﬂat/simple mirror/beach magnetic conﬁguration. The paper will give an overview about modal-conversion investigation by a theoretical and experimental point of view, including the description of the diagnostics developed to detect plasma emitted radiation in the RF, optical, soft-X and hard-X-ray domains.
	Slides MOCO01 [13.465 MB]
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-MOCO01
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WEPP01	High Intensity Beam Production at CEA/Saclay For The IPHI Project	ion, rfq, proton, solenoid	83
	R. Gobin, D. Bogard, O. Delferrière, M. Desmons, Y. Gauthier, F. Harrault, F. Peauger, G. Perreu, B. Pottin, Y. Sauce, J. Schwindling, F. Senée, O. Tuske, D. Uriot, T.V. Vacher CEA/DRF/IRFU, Gif-sur-Yvette, France
	CEA/Saclay is involved in high power proton accelerators for long years. This activity started in the 90's, with the development of the SILHI source which routinely produces tens mA of proton beam. Several industrial difficulties led to a very long IPHI RFQ construction process. The 352 MHz RFQ conditioning is presently in progress. Before the completion of the conditioning in CW mode, tests with pulsed proton beam have been decided. As a consequence, the SILHI source recently produced very short H⁺ beam pulses in order to allow the first IPHI beam acceleration. Such very short pulses, in the range of few hundred microseconds, allowed analyzing the beam loading of the RFQ cavity as well as conditioning the middle energy diagnostic. This article will focus on the source parameters and beam characteristics in the low energy beam line leading to the best RFQ transmission.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP01
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPP02	Commissioning of the High Intensity Proton Injector of the Facility for Anti Proton and Ion Research at CEA-Saclay	ion, proton, solenoid, plasma	86
	O. Tuske, N. Chauvin, O. Delferrière, Y. Gauthier, P. Girardot, N. Misiara, Y. Sauce, F. Senée, C. Simon CEA/IRFU, Gif-sur-Yvette, France F. Ameil, R. Berezov, J. Fils, R. Hollinger GSI, Darmstadt, Germany T.V. Vacher CEA/DSM/IRFU, France
	The Facility for Antiproton and Ion Research (FAIR) located at GSI (Darmstadt) in Germany addresses several fields of physics research within a single installation. One of the contribution of Irfu/SACM at CEA-Saclay to the FAIR linear proton accelerator concerns the development and construction of the ion source and the low energy line. The 2.45 GHz microwave ion source will deliver a 100 mA H⁺ beam pulsed at 4 Hz with an energy of 95 keV. A low energy beam transport (LEBT) line based on a dual solenoids focusing scheme allows the injection of the proton beam into the radio frequency quadrupole (RFQ) within an acceptance of 0.3π mm.mrad (norm., rms). An electrostatic chopper system located between the second solenoid and the RFQ is used to cut the beam macro pulse from the source to inject 36 μs long beam pulses into the RFQ. This article reports the finalization of the installation of the injector with the detail of dedicated diagnostics, the first beam measurements and gives a planning of the different commissioning phases
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP02
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPP41	Measurement of Microwave Frequencies Emitted by Instabilities of ECRIS Plasma with Waveguide Filters and Microwave Sensitive Diodes	ion, plasma, ECR, ECRIS	134
	J. Orpana, T. Kalvas, H. A. Koivisto, R.J. Kronholm, J.P. Laulainen, O.A. Tarvainen JYFL, Jyväskylä, Finland I. Izotov, D. Mansfeld, V. Skalyga IAP/RAS, Nizhny Novgorod, Russia
	Periodic emission of strong microwave bursts at certain frequencies is a characteristic feature of kinetic instabilities in ECRIS plasmas. Precise measurement of the temporally evolving microwave frequency spectra requires a high bandwidth oscilloscope, which can make the experiments prohibitively expensive to conduct. An alternative low-cost method to study the microwave emission in narrow frequency bands is to apply band-pass waveguide filters and microwave sensitive diodes. The microwave emission from the plasma of the JYFL 14 GHz ECRIS has been studied with both methods. The results of the experiments are compared and their interpretation is discussed. It is demonstrated that the method based on filters and diodes can provide useful information about the microwave emission spectra induced by electron cyclotron instabilities.
DOI •	reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP41
Export •	reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

Paper

Title

Other Keywords

Page

MOCO01

Innovative Schemes of Plasma Heating for Future Multiply-Charged Ions Sources: Modeling and Experimental Investigation

ion, plasma, electron, ECR

14

D. Mascali, C. Altana, G. Castro, L. Celona, S. Gammino, O. Leonardi, M. Mazzaglia, D. Nicolosi, R. Reitano, F.P. Romano, G. Sorbello, G. Torrisi
INFN/LNS, Catania, Italy
M. Mazzaglia, R. Reitano
Universita Degli Studi Di Catania, Catania, Italy
F.P. Romano
IBAM-CNR, Catania, Italy
G. Sorbello
University of Catania, Catania, Italy

The application of plasma heating methods alternative to the direct Electron Cyclotron Resonance coupling, such as the Electron Bernstein Waves (EBW) heating, is already a reality in large-size thermonuclear reactors. These plasma waves give the unique opportunity to largely overcome the cutoff density. EBW heating in compact traps such as ECRIS devices is still a challenge, requiring advanced modelling and innovative diagnostics. At Istituto Nazionale di Fisica Nucleare-Laboratori Nazionali del Sud (INFN-LNS), the off-ECR heating (driven by Bernstein waves) has produced a highly overdense plasma. Interferometric measurements say the electron density has overcome by a factor ten the cutoff density at 3.76 GHz. More advanced schemes of wave launching have been designed and implemented on the new test-bench called Flexible Plasma Trap, operating up to 7 GHz-0.5 T, in ﬂat/simple mirror/beach magnetic conﬁguration. The paper will give an overview about modal-conversion investigation by a theoretical and experimental point of view, including the description of the diagnostics developed to detect plasma emitted radiation in the RF, optical, soft-X and hard-X-ray domains.

Slides MOCO01 [13.465 MB]

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-MOCO01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPP01

High Intensity Beam Production at CEA/Saclay For The IPHI Project

ion, rfq, proton, solenoid

83

R. Gobin, D. Bogard, O. Delferrière, M. Desmons, Y. Gauthier, F. Harrault, F. Peauger, G. Perreu, B. Pottin, Y. Sauce, J. Schwindling, F. Senée, O. Tuske, D. Uriot, T.V. Vacher
CEA/DRF/IRFU, Gif-sur-Yvette, France

CEA/Saclay is involved in high power proton accelerators for long years. This activity started in the 90's, with the development of the SILHI source which routinely produces tens mA of proton beam. Several industrial difficulties led to a very long IPHI RFQ construction process. The 352 MHz RFQ conditioning is presently in progress. Before the completion of the conditioning in CW mode, tests with pulsed proton beam have been decided. As a consequence, the SILHI source recently produced very short H⁺ beam pulses in order to allow the first IPHI beam acceleration. Such very short pulses, in the range of few hundred microseconds, allowed analyzing the beam loading of the RFQ cavity as well as conditioning the middle energy diagnostic. This article will focus on the source parameters and beam characteristics in the low energy beam line leading to the best RFQ transmission.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP01

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPP02

Commissioning of the High Intensity Proton Injector of the Facility for Anti Proton and Ion Research at CEA-Saclay

ion, proton, solenoid, plasma

86

O. Tuske, N. Chauvin, O. Delferrière, Y. Gauthier, P. Girardot, N. Misiara, Y. Sauce, F. Senée, C. Simon
CEA/IRFU, Gif-sur-Yvette, France
F. Ameil, R. Berezov, J. Fils, R. Hollinger
GSI, Darmstadt, Germany
T.V. Vacher
CEA/DSM/IRFU, France

The Facility for Antiproton and Ion Research (FAIR) located at GSI (Darmstadt) in Germany addresses several fields of physics research within a single installation. One of the contribution of Irfu/SACM at CEA-Saclay to the FAIR linear proton accelerator concerns the development and construction of the ion source and the low energy line. The 2.45 GHz microwave ion source will deliver a 100 mA H⁺ beam pulsed at 4 Hz with an energy of 95 keV. A low energy beam transport (LEBT) line based on a dual solenoids focusing scheme allows the injection of the proton beam into the radio frequency quadrupole (RFQ) within an acceptance of 0.3π mm.mrad (norm., rms). An electrostatic chopper system located between the second solenoid and the RFQ is used to cut the beam macro pulse from the source to inject 36 μs long beam pulses into the RFQ. This article reports the finalization of the installation of the injector with the detail of dedicated diagnostics, the first beam measurements and gives a planning of the different commissioning phases

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP02

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)

WEPP41

Measurement of Microwave Frequencies Emitted by Instabilities of ECRIS Plasma with Waveguide Filters and Microwave Sensitive Diodes

ion, plasma, ECR, ECRIS

134

J. Orpana, T. Kalvas, H. A. Koivisto, R.J. Kronholm, J.P. Laulainen, O.A. Tarvainen
JYFL, Jyväskylä, Finland
I. Izotov, D. Mansfeld, V. Skalyga
IAP/RAS, Nizhny Novgorod, Russia

Periodic emission of strong microwave bursts at certain frequencies is a characteristic feature of kinetic instabilities in ECRIS plasmas. Precise measurement of the temporally evolving microwave frequency spectra requires a high bandwidth oscilloscope, which can make the experiments prohibitively expensive to conduct. An alternative low-cost method to study the microwave emission in narrow frequency bands is to apply band-pass waveguide filters and microwave sensitive diodes. The microwave emission from the plasma of the JYFL 14 GHz ECRIS has been studied with both methods. The results of the experiments are compared and their interpretation is discussed. It is demonstrated that the method based on filters and diodes can provide useful information about the microwave emission spectra induced by electron cyclotron instabilities.

DOI •

reference for this paper ※ https://doi.org/10.18429/JACoW-ECRIS2016-WEPP41

Export •

reference for this paper using ※ BibTeX, ※ LaTeX, ※ Text/Word, ※ RIS, ※ EndNote (xml)