Electron Cyclotron Resonance Ion Sources and ECR Plasmas

Geller, R.

doi:10.1201/9780203758663

Cited by 171 publications

(181 citation statements)

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“…It is well-known that plasma physics finds its largest area of application in the controlled nuclear fusion field; on the other hand, compact plasma machines working as ion sources have played a crucial role in developing nuclear physics facilities. Among the various types of ion sources developed since 1950s, Electron Cyclotron Resonance Ion Sources (ECRIS) [4] are the most performing ones, supporting the growing request of intense beams of multicharged ions coming from both fundamental science (nuclear and particle Physics especially [5]) and applied research (neutrons spallation sources [6], sub-critical nuclear reactors [7][8][9], hadrotherapy facilities [10], material treatments, ion implantation). The ECRIS development path has been based [11] on the mere magnetic field, microwave source frequency and power boosting, now deemed saturating.…”

Section: Ecris State-of-the-artmentioning

confidence: 99%

PANDORA, a new facility for interdisciplinary in-plasma physics

et al. 2017

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PANDORA, Plasmas for Astrophysics, Nuclear Decays Observation and Radiation for Archaeometry, is planned as a groundbreaking new facility based on a state-of-the-art plasma trap confining extremely energetic plasma for performing interdisciplinary research in the fields of Nuclear Astrophysics, Astrophysics, Plasma Physics and Applications in Material Science and Archaeometry: the plasmas become the environment for measuring, for the first time, nuclear decays rates in stellar-like condition (such as 7 Be decay and beta-decay involved in s-process nucleosynthesis), especially as a function of the ionization state of the plasma ions. These studies are of paramount importance for addressing several astrophysical issues in both stellar and primordial nucleosynthesis environment (e.g. determination of solar neutrino flux and 7 Li Cosmological Problem), moreover the confined energetic plasma will be a unique light source for high performance stellar spectroscopy measurements in the visible, UV and X-ray domains, offering advancements in observational astronomy. As to magnetic fields, the experimental validation of theoretical first and second order Landé factors will drive the layout of next generation polarimetric units for the high resolution spectrograph of the future giant telescopes. In PANDORA new plasma heating methods will be explored, that will push forward the ion beam output, in terms of extracted intensity and charge states. More, advanced and optimized injection methods of ions in an ECR plasma will be experimented, with the aim at optimizing its capture efficiency. This will be applied to the ECR-based Charge Breeding technique, that will improve the performances of the SPES ISOL-facility currently installed at Laboratori Nazionali di Legnaro-INFN. Finally, PANDORA will be suitable for energy conversion, making the plasma as an exceptional source of electromagnetic radiation, for applications in Material Science and Archaeometry. PACS. 52.72.+v Laboratory studies of space-and astrophysical-plasma processes -26. Nuclear Astrophysics -23.40.-s Beta decay; Electron Capture -95.55.Qf Photometric, polarimetric and spectroscopic instrumentation -52.50.-b Plasma production and heating -52.65.-y Plasma simulation -52.70.-m Plasma diagnostics techniques and instrumentation

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Section: Ecris State-of-the-artmentioning

confidence: 99%

PANDORA, a new facility for interdisciplinary in-plasma physics

et al. 2017

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“…Various explanations have been proposed for the beneficial effect. It has been suggested that the average charge state in the plasma is reduced, which increases the energy lifetime of the ions finally resulting to enhanced ion confinement and increased HCI production of the heavier minority species [2]. Another, perhaps the prevailing, explanation is attributed to ion cooling, resulting from the collisional interaction between the two gas species, with the lighter ions being heated and the heavier ones being cooled, thus increasing the confinement time of the latter [3].…”

Section: Introductionmentioning

confidence: 99%

Investigation into the gas mixing effect in ECRIS plasma using Kα and optical diagnostics

Sakildien

Tarvainen

Kalvas

et al. 2018

AIP Conference Proceedings

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“…Electron cyclotron resonance (ECR) ion sources [1,2] are one of the best sources to boost the performance as well as the efficiency of modern particle accelerators and colliders in different fields of physics, especially fundamental research on heavy ions such as nuclear and atomic physics, etc. It is an ongoing quest to develop an ion source which maximizes the ion charge state, beam current and minimizes the beam emittance.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation of plasma instabilities by Fourier analysis in an electron cyclotron resonance ion source

Kumar

Sharma

et al. 2018

Phys. Rev. Accel. Beams

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The plasma instabilities play an important role in an electron cyclotron resonance (ECR) ion source for the production of intense heavy ion beams in high charge states for particle accelerators. The geometrical and operational constraints of ECR sources hinder the trapping of ions for a sufficient time to get fully ionized with maximum efficiency. This problem is looked at in detail by studying the plasma instabilities in ECR ion sources. The ECR environment is full of complex rearrangements of various electric and magnetic fields to define a sustainable trap for the ions. The maximum frequency of plasma instability has been observed to be of 122.5 kHz under a set of sustainable plasma parameters. However, this limit may be pushed further if the plasma is overdriven in terms of source parameters. The instabilities cover a full regime of few tens of Hz to few hundreds of kHz under various operating conditions of radio frequency (rf), negative bias voltage, rf power and injection gas pressure. The rigorous details of frequencies and amplitudes of plasma instabilities are being reported by studying the Fourier spectrum of extracted and analyzed beam intensity. The plasma instabilities are attributed as drift waves in an inhomogeneous ECR plasma generated by the application of radio-frequency fields.

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Electron Cyclotron Resonance Ion Sources and ECR Plasmas

Cited by 171 publications

References 0 publications

PANDORA, a new facility for interdisciplinary in-plasma physics

PANDORA, a new facility for interdisciplinary in-plasma physics

Investigation into the gas mixing effect in ECRIS plasma using Kα and optical diagnostics

Experimental investigation of plasma instabilities by Fourier analysis in an electron cyclotron resonance ion source

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