Beam test of a grid-less multi-harmonic buncher

Ostroumov, P. N.; Асеев, В. А.; Barcikowski, A.; Clifft, B.E.; Pardo, R. C.; Sharamentov, S.I.; Sengupta, Mainak

doi:10.1109/pac.2007.4441210

Cited by 7 publications

(3 citation statements)

References 2 publications

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“…If needed, the performance of the Pulsing start mode can be improved by replacing the AMS pulsing system by fast vertical deflector plates [9]. To partly mitigate the effect of large beam losses when pulsing beams of rare particles such as cluster ions, the useful primary particle rate could be increased by combining a beam chopper with a bunching system [24].…”

Section: Discussionmentioning

confidence: 99%

Time-of-flight MeV-SIMS with beam induced secondary electron trigger

Schulte-Borchers

Döbeli

Müller

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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A new Time-of-flight MeV Secondary Ion Mass Spectrometry (MeV-SIMS) setup was developed to be used with a capillary microprobe for molecular imaging with heavy primary ions at MeV energies. Due to the low output current of the ion collimating capillary a time-of-flight (ToF) measurement method with high duty cycle is necessary. Secondary electrons from the sample surface and transmitted ions were studied as start signals. They enable measurements with a continuous primary beam and unpulsed ToF spectrometer. Tests with various primary ion beams and sample types have shown that a secondary electron signal is obtained from 30 to 40 % of incident MeV particles. This provides a ToF start signal with considerably better time resolution than the one obtained from transmitted primary ions detected in a radiation hard gas ionization detector. Beam induced secondary electrons therefore allow for MeV-SIMS measurements with reasonable mass resolution at primary ion beam currents in the low fA range.

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Section: Discussionmentioning

confidence: 99%

Time-of-flight MeV-SIMS with beam induced secondary electron trigger

Schulte-Borchers

Döbeli

Müller

et al. 2016

Nuclear Instruments and Methods in Physics Research Section B:

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“…The use of an external buncher before RFQ structure has been discussed several times [11][12][13]. The MHB for ATLAS at ANL has been developed [14] and successfully operated for several years.…”

Section: Bunching Systemmentioning

confidence: 99%

Conceptual design of LEBT and RFQ for the HIAF linac

Sun

et al. 2013

Nuclear Instruments and Methods in Physics Research Section A:

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“…The RFQ replaced the first three superconducting cavities of the Positive Ion Injector (PII) [8] to avoid deterioration of the beam quality due to the fast acceleration of low energy beams. The RFQ uses the existing multi-harmonic buncher (MHB) [9] as a pre-buncher. Two notable features of the ATLAS RFQ are trapezoidal modulations in the accelerating section and a compact output matcher to produce an axially symmetric beam [10] for direct beam injection into PII which uses solenoidal focusing.…”

Section: Introductionmentioning

confidence: 99%

The ATLAS multi-user upgrade and potential applications

et al. 2017

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With the recent integration of the CARIBU-EBIS charge breeder into the ATLAS accelerator system to provide for more pure and efficient charge breeding of radioactive beams, a multi-user upgrade of the ATLAS facility is being proposed to serve multiple users simultaneously. ATLAS was the first superconducting ion linac in the world and is the US DOE low-energy Nuclear Physics National User Facility. The proposed upgrade will take advantage of the continuous-wave nature of ATLAS and the pulsed nature of the EBIS charge breeder in order to simultaneously accelerate two beams with very close mass-to-charge ratios; one stable from the existing ECR ion source and one radioactive from the newly commissioned EBIS charge breeder. In addition to enhancing the nuclear physics program, beam extraction at different points along the linac will open up the opportunity for other potential applications; for instance, material irradiation studies at ∼1 MeV/u, isotope production and radiobiological studies at ∼6 MeV/u and at the full ATLAS energy of ∼15 MeV/u. The concept and proposed implementation of the ATLAS multi-user upgrade will be discussed. Future plans to enhance the flexibility of this upgrade will be presented. K: Accelerator Applications; Accelerator modelling and simulations (multi-particle dynamics; single-particle dynamics); Accelerator Subsystems and Technologies; Ion sources (positive ions, negative ions, electron cyclotron resonance (ECR), electron beam (EBIS))1Corresponding author.

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Beam test of a grid-less multi-harmonic buncher

Cited by 7 publications

References 2 publications

Time-of-flight MeV-SIMS with beam induced secondary electron trigger

Time-of-flight MeV-SIMS with beam induced secondary electron trigger

Conceptual design of LEBT and RFQ for the HIAF linac

The ATLAS multi-user upgrade and potential applications

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