Beam test results with the ISAC 35 MHz RFQ

Laxdal, Robert; Baartman, R.; Root, L.

doi:10.1109/pac.1999.792361

Cited by 5 publications

(3 citation statements)

References 3 publications

(3 reference statements)

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“…The TRANSOPTR model was verified through comparison with the particle tracking code PARMTEQ, itself used in 1995 for the design of the ISAC-RFQ [1] and for subsequent studies of its performance [22]. In the present study, a Monte Carlo method was used to produce a PARMTEQ input file with 10 4 particles, consisting of three independent Gaussian distributions in ðx; x 0 Þ, ðy; y 0 Þ and (ϕ; E).…”

Section: B Comparison To Parmteqmentioning

confidence: 99%

Fast radio frequency quadrupole envelope computation for model based beam tuning

Shelbaya

Baartman

Kester

2019

Phys. Rev. Accel. Beams

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Efficient tuning of complex accelerator chains requires automated procedures, themselves reliant upon beam physical models. The Isotope Separator and ACcelerator (ISAC) facility at TRIUMF requires frequent changes of beam species (isotope), mass to charge ratio and beam energy tailored to experiment requirements, which demands rapid beam tuning. In addition, emergent effects such as long term changes of energy or energy spread require beam optimization that must be based on a complete model of the accelerator. Using an envelope code to build an end-to-end simulation of the accelerator facility for operational purposes reduces computing times by 3 or 4 orders of magnitude, when compared to particle tracking codes, so that the requisite simulations may be carried out in real time, by polling control system data. Herein described is the second order Hamiltonian for an radio frequency quadrupole (RFQ), presented within the framework of the envelope code TRANSOPTR. To benchmark the TRANSOPTR model, envelope simulations of the TRIUMF-ISAC RFQ have been performed and compared with the multiparticle code PARMTEQ.

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Section: B Comparison To Parmteqmentioning

confidence: 99%

Fast radio frequency quadrupole envelope computation for model based beam tuning

Shelbaya

Baartman

Kester

2019

Phys. Rev. Accel. Beams

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“…These sources provide a variety of 1+ or n+ beams up to A/Q=32 (A: atomic mass and Q: charge state) for ISAC experiments, commissioning the accelerators, setting up for the radioactive experiments, and tuning the beamlines. The primary accelerator Radio Frequency Quadrupole (RFQ) [5] is designed to accept beams at a fixed injection velocity of 2.04 keV/u. Moreover, the secondary accelerator Drift Tube Linac (DTL) [6] requires a mass-over-charge ratio between 3.0 and 6.0.…”

Section: Introductionmentioning

confidence: 99%

Dual Frequency Enhancement of the Supernanogan Multi-Charged Ion Source at TRIUMF ISAC Facility

Jayamanna,

Adegun,

Ames

et al. 2024

J. Phys.: Conf. Ser.

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In 2008, a Supernanogan ECR ion source from PANTECHNIK was introduced in addition to an in-house developed microwave ion source and a surface ion source to complement the TRIUMF Offline Ion Source (OLIS) facility to provide highly charged ions to ISAC experiments. Originally, it employed a 400 W Travelling Wave Tube Amplifier (TWTA) for RF heating, but less than 50 W was enough to produce all the multi-charged beams required by the experiments. A 50 W solid-state amplifier was added for redundancy purposes, but we found a significant improvement when both were switched on at the same time. When properly optimized for the dual frequency, less than ten times the total power is needed to produce a similar charge state distribution with more current than the single frequency. The beam stability and the ability to extract higher charged ions also improved with the dual frequency enhancement. The simulation studies, operational experience, and results are discussed in this paper.

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“…4 MHz RFQ to accelerate beams of A/q ≤ 30 from 2 keV/u to 153 keV/u and a post-stripper, 106.1 MHz variable energy drift tube linac (DTL) to accelerate ions of 3 ≤ A/q ≤ 6 to a final energy from 0.15 to 1.53 MeV/u. The RFQ commissioning has been reported previously [2,3].…”

Section: Introductionmentioning

confidence: 99%

Beam commissioning and first operation of the ISAC DTL at TRIUMF

Laxdal

Dutto²,

Fong³

et al.

PACS2001. Proceedings of the 2001 Particle Accelerator Conference (Cat. No.01CH37268)

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The post-accelerator for the ISAC radioactive beam facility combines a 35.4 MHz RFQ and a variable energy 106 MHz DTL. The ISAC DTL is designed to accelerate ions with 3 ≤ A/q ≤ 6 to energies fully variable from 0.153 to 1.53 MeV/u. The unique separated function design allows efficient room-temperature acceleration and full energy variability with no degradation in beam quality. The first stable beams were accelerated in the DTL in Dec. 2000 with full commissioning in the first months of 2001. Test results with stable beam will be reported and compared to beam simulation results. In addition the initial operating experience with stable beam delivery is reported.

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Beam test results with the ISAC 35 MHz RFQ

Cited by 5 publications

References 3 publications

Fast radio frequency quadrupole envelope computation for model based beam tuning

Fast radio frequency quadrupole envelope computation for model based beam tuning

Dual Frequency Enhancement of the Supernanogan Multi-Charged Ion Source at TRIUMF ISAC Facility

Beam commissioning and first operation of the ISAC DTL at TRIUMF

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