Beam-bunching in an ECR ion source by the pulsed gating-potential method

Jeong, Sinwon; Oyaizu, M; Kawakami, Hiroo; Shirakabe, Y.; Nomura, Takushi

doi:10.1016/s0168-583x(96)01016-6

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…1993). A similar gating technique has also been developed for an ECR ion source, giving a duty cycle of 52% at a repetition rate of 1 kHz (Jeong et al . 1997).…”

Section: (D ) Ion-beam Storage and Bunchingmentioning

confidence: 99%

Radioactive ion–beam projects based on the two–accelerator or ISOL principle

Ravn

1998

Philosophical Transactions of the Royal Society of London. Seri

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Today, two basically different methods have been developed for production of accelerated radioactive ion beams (RIB). The fragmentation of intense heavy-ion beams, in which the forward momentum imparted to the primary beam fragments is preserved and exploited for mass separation, study and further reactions, is the preferred technique at present. The second method, which is the subject of this review, makes use of spallation, fission and fragmentation reactions in thick targets driven by light particles from a first accelerator or a nuclear reactor. The radioactivity produced is brought to rest in the target and then has to be separated and transformed into an ion beam in order to be post-accelerated in a second machine. This method has in the past 30 years been used successfully at many on-line mass separators to produce low-energy radioactive ion beams. Techniques for the transfer of the nuclear reaction products into an ion beam have been optimized with respect to the individual physical and chemical properties of 70% of the chemical elements. Several new ideas in efficiently matching such an on-line mass separator as injector to a heavy-ion accelerator are currently being developed so that this method holds much promise for the future, in particular when it comes to selecting the intensity and energy choice of the secondary beams. This paper is devoted to a systematic description and discussion of this two-accelerator type of RIB facility, of which many are currently in various phases of construction and planning.

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“…1993). A similar gating technique has also been developed for an ECR ion source, giving a duty cycle of 52% at a repetition rate of 1 kHz (Jeong et al . 1997).…”

Section: (D ) Ion-beam Storage and Bunchingmentioning

confidence: 99%

Radioactive ion–beam projects based on the two–accelerator or ISOL principle

Ravn

1998

Philosophical Transactions of the Royal Society of London. Seri

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Beam bunching of the radioactive nuclear beam in a 6.4 GHz electron cyclotron resonance ion source

Oyaizu

Ishiyama

Jeong

et al. 1998

Review of Scientific Instruments

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Articles you may be interested inEffect of electron cyclotron resonance ion source frequency tuning on ion beam intensity and quality at Efficiency and transit time studies performed with the electron cyclotron resonance ion source dedicated to the radioactive ion beam production at ISAC/TRIUMF Rev. Sci. Instrum. 77, 03A709 (2006); 10.1063/1.2172344 Multipurpose superconducting electron cyclotron resonance ion source, the European roadmap to thirdgeneration electron cyclotron resonance ion sources Rev. Sci. Instrum. 77, 03A303 (2006); 10.1063/1.2149303Production of multicharged radioactive ion beams: New results for the 1+→n+ method with the MINIMAFIOS and SARA-CAPRICE electron cyclotron resonance ion sources Rev.A single stage 6.4 GHz ECR ion source for an isotope separator on-line based radioactive nuclear beam facility at KEK-Tanashi, is under an on-line test for the effective production of 19 Ne 2ϩ ions by using alpha beams from a cyclotron. Synchronized with the pulsed operation of heavy ion linacs, the millisecond beam bunching is now being performed to reduce the loss of radioactive ions in acceleration by using a pulsed-gating potential method. The highest beam intensity at 100 Hz and 20% duty factor reaches 60% of that obtained in a continuous-wave mode.

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Beam-bunching in an ECR ion source by the pulsed gating-potential method

Cited by 2 publications

References 4 publications

Radioactive ion–beam projects based on the two–accelerator or ISOL principle

Radioactive ion–beam projects based on the two–accelerator or ISOL principle

Beam bunching of the radioactive nuclear beam in a 6.4 GHz electron cyclotron resonance ion source

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