The new 1.2 T–14.5 GHz Caprice source of multicharged ions: Results with metallic elements

Hitz, D.; Bourg, F.; Delaunay, M.; Ludwig, Peter; Melin, G.; Pontonnier, M.; Nguyen, Tram

doi:10.1063/1.1146828

Cited by 27 publications

(7 citation statements)

References 3 publications

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“…It may be possible to reduce the size and construction cost of the treatment building by adopting a scanning method. 36 It produced a great variety of ion species for fundamental physics experiments. If the wobbler method is expected to be utilized, the consideration for the additional shielding is necessary before the construction.…”

Section: A Typical Requirements For Ion Sourcesmentioning

confidence: 99%

Review on heavy ion radiotherapy facilities and related ion sources (invited)

Kitagawa¹,

Fujita²,

Muramatsu³

et al. 2010

Review of Scientific Instruments

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Heavy ion radiotherapy awakens worldwide interest recently. The clinical results obtained by the Heavy Ion Medical Accelerator in Chiba at the National Institute of Radiological Sciences in Japan have clearly demonstrated the advantages of carbon ion radiotherapy. Presently, there are four facilities for heavy ion radiotherapy in operation, and several new facilities are under construction or being planned. The most common requests for ion sources are a long lifetime and good stability and reproducibility. Sufficient intensity has been achieved by electron cyclotron resonance ion sources at the present facilities.

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Section: A Typical Requirements For Ion Sourcesmentioning

confidence: 99%

Review on heavy ion radiotherapy facilities and related ion sources (invited)

Kitagawa¹,

Fujita²,

Muramatsu³

et al. 2010

Review of Scientific Instruments

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“…From Table I with Grenoble CAPRICE-14.5 GHz and GANIL ECR4M. 15,16 This ion source almost combines all the techniques to enhance production of highly charged ions, such as higher magnetic field, large plasma volume, and biased probe to provide extra cold electrons except double frequency plasma heating and aluminum chamber. The results from this ion source further demonstrate that higher magnetic field, large plasma volume, and extra cold electrons are really significant to enhance production of highly charged ion beam.…”

Section: A 145 Ghz Imp Ecr Ion Sourcementioning

confidence: 99%

Development of ECR ion sources in China (invited)

Zhao

Bian

Liu

et al. 2000

Review of Scientific Instruments

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Minimono: An ultracompact permanent magnet ion source for singly charged ions Rev. Sci. Instrum. 74, 956 (2003); 10.1063/1.1523630Status and new developments of the high intensity electron cyclotron resonance source light ion continuous wave, and pulsed mode (invited) Rev. Sci. Instrum. 71, 830 (2000)Recent development of electron cyclotron resonance ͑ECR͒ ion sources in China is reviewed. Emphasis is put on high charge state ECR ion sources which have been mainly developed in China by Institute of Modern Physics ͑IMP͒. Presently two ECR ion sources built by IMP for highly charged ion beams are put into operation for cyclotrons and atomic physics research. The development of high charge state ECR ion sources at IMP has progressed with a new magnetic field configuration, better condition for extraction of highly charged ions, high mirror magnetic field, large plasma volume, and special techniques to provide extra cold electrons. These techniques greatly enhance the production of highly charged ions from IMP ECR ion sources. So far more than 185 eA of Ar 11ϩ and 50 eA of Xe 26ϩ were produced by the IMP ECR ion sources. The metallic ion beam production was tested and the first beam 40 Ca 11ϩ was provided to the cyclotrons at IMP. The beam intensity of 40 Ca 11ϩ could reach 130 eA. The next part of this article will report the latest progress of 2.45 GHz ECR ion sources in China. A 2.45 GHz compact permanent magnet proton ion source was designed and constructed by IMP. A new microwave feeding system is applied on this ion source. The ion source is able to deliver 90 mA of mixed ion beam (H 1 ϩ ϩH 2 ϩ ϩH 3 ϩ ) after preliminary commissioning. The article also mentions a small 2.45 GHz ECR ion source which was built by Sichuan University and used for industry applications. The dependence of plasma density and electron temperature on radio frequency power, neutral gas pressure, and different microwave windows was measured by a Langmuir probe on this ion source.

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“…In this sense, this diffusion regime in the momentum space resembles the well-known "classical" Coulomb losses in mirror traps [18]. The above-mentioned levels of heating powercorresponding to the weak diffusion regimeare the most often used in modern ECR ion sources and other applications [19,20,21]. However, as far as we know, the effect of electron-cyclotron interaction with monochromatic radiation on the electron losses from the mirror trap in this regime has not previously been studied experimentally.…”

Section: Introductionmentioning

confidence: 99%

Plasma losses from mirror trap, initiated by microwave radiation under electron cyclotron resonance conditions

Mansfeld¹,

Vodopyanov²,

Tokman³

et al. 2018

Plasma Phys. Control. Fusion

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Plasma of a stationary ECR discharge sustained by gyrotron radiation at a frequency of 24 GHz and a power of up to 600 W in a mirror magnetic trap was studied. At pressures near the gas breakdown threshold, the extinction effect of an electron-cyclotron discharge is observed with increasing radiation power. When the cyclotron resonance cross section approaches the magnetic plug, the power threshold corresponding to the discharge extinction decreases. These experimental results confirm the presence of the effect of particles precipitation from the trap as a result of electroncyclotron resonance interaction with gyrotron radiation. The experimental scaling of the extinction power dependence on the position of the ECR cross section in a magnetic trap corresponds to the results of the estimates on the basis of the theory of particle precipitation in the quasilinear diffusion regime.

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The new 1.2 T–14.5 GHz Caprice source of multicharged ions: Results with metallic elements

Cited by 27 publications

References 3 publications

Review on heavy ion radiotherapy facilities and related ion sources (invited)

Review on heavy ion radiotherapy facilities and related ion sources (invited)

Development of ECR ion sources in China (invited)

Plasma losses from mirror trap, initiated by microwave radiation under electron cyclotron resonance conditions

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