FEBIAD Ion Source Development at TRIUMF-ISAC

Schultz, Brad; Ames, F.; Kester, O.; Kunz, P.; Mjøs, Anders; Sandor, J. E.

doi:10.18429/jacow-ipac2018-thpml041

Cited by 2 publications

(1 citation statement)

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“…The resulting nuclear reaction products will then diffuse through a hot transfer-line where some of them -namely the Group 1 and 2 elements, can be ionized by surface-ionization to the 1+ charge-state [3]. Most reaction products will not be ionized in this way however; therefore a universal (but not very selective) method of ionization known as a Forced Electron-Beam Induced Arc-Discharge (FEBIAD) ion-source will also be incorporated into the TIS [4]. Radioactive ions produced in this way can then be accelerated as RIBs with energies of up to 60 keV for experimental studies.…”

Section: Introductionmentioning

confidence: 99%

Ion-source development at the off-line LERIB test-facility at iThemba LABS

Segal,

Bark,

Abraham

et al. 2023

J. Phys.: Conf. Ser.

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The Low Energy Radioactive Ion Beam (LERIB) facility [1] will be used to produce low-energy radioactive-ion beams (RIBs) with energies up to 60 keV. Radioactive reaction products will be created by a 66 MeV proton-beam impinging on a target made of carbide disks, such as SiC [2]. These reaction products will then be ionized in a target-ion-source (TIS) and extracted as beam. The TIS design allows three ion-sources: a surface ion-source [3], a forced electron-beam induced arc-discharge (FEBIAD) ion-source [4], and a resonance-ionization laser ion-source, or RILIS. The surface-ionization source was commissioned with stable beams in October 2021. The production of ions from Group-1 elements was accomplished with beams of 39K+, 41K+ and 23Na+ where currents were measured in the μA range. This source may be advantageous for producing stable pilot-beams for future radioactive-beam experiments. The FEBIAD is still in development at present.

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Section: Introductionmentioning

confidence: 99%

Ion-source development at the off-line LERIB test-facility at iThemba LABS

Segal,

Bark,

Abraham

et al. 2023

J. Phys.: Conf. Ser.

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Efficacy of radial matching section in enhancing RFQ cooler acceptance and optimization of its injection optics

Dechoudhury¹,

Babu²,

Naik

2020

J. Inst.

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Radio Frequency Quadrupole (RFQ) cooler is a device used for reducing transverse and longitudinal emittance of ion beams. The cooler employs a time varying field and as a result of which the acceptance ellipse, as seen by the beam while entering the cooler, is dependent on the RF phase. Acceptance ellipses having different orientations corresponding to the changing RF phase have a much smaller phase independent central overlapping area, so the real transmission for an injected DC beam into the RFQ cooler gets reduced. In RFQ linacs radial matching section has long been used for matching “time independent” DC input beam to the “time dependent” RF structure. Our simulation study shows that a similar radial matching section at the entrance of RFQ cooler can enhance the transmission for a DC beam into the RFQ cooler. Optimization of length of the radial matching section and the corresponding deceleration and injection optics shows an enhancement of more than two times in the area of time independent acceptance ellipse for ions over a mass range of 0A=4 to 240. Such innovative design could play a significant role in experiments with rare ion beams which are produced in miniscule quantities.

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FEBIAD Ion Source Development at TRIUMF-ISAC

Cited by 2 publications

References 1 publication

Ion-source development at the off-line LERIB test-facility at iThemba LABS

Ion-source development at the off-line LERIB test-facility at iThemba LABS

Efficacy of radial matching section in enhancing RFQ cooler acceptance and optimization of its injection optics

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