A 35 MHz spiral re-buncher cavity for the TRIUMF ISAC facility

Mitra, A.K.; Poirier, R.

doi:10.1109/pac.1999.795373

Cited by 5 publications

(5 citation statements)

References 2 publications

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“…10, the MEBT section consists of two 65 cm long triplets and one 3-gap rebuncher cavity. At 36.136 MHz, the Spiral structure [18] is a good candidate for the rebuncher. The main design parameters of the MEBT section are listed in Table II.…”

Section: -Rfq Solution With Mebt Between Cavitiesmentioning

confidence: 99%

Realizing long radio-frequency quadrupole accelerators with multiple shorter and independent cavities

Zhang

Podlech

Tanke

2020

Phys. Rev. Accel. Beams

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It is well known that the tuning of a long radio-frequency quadrupole accelerator is demanding. This study investigated how to realize efficient long RFQ accelerators with multiple shorter and independent cavities. From the RF point of view, the use of shorter cavities has many advantages e.g. enlarged mode separation and simplified RF tuning, but the beam matching between cavities will become an issue, especially at high current and low energy. Taking a more than 9 m long, high current machine as an example, this paper presents the design concepts and methods leading to good beam quality and high beam transmission throughout a multi-stage RFQ accelerator.

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Section: -Rfq Solution With Mebt Between Cavitiesmentioning

confidence: 99%

Realizing long radio-frequency quadrupole accelerators with multiple shorter and independent cavities

Zhang

Podlech

Tanke

2020

Phys. Rev. Accel. Beams

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“…The dimensions of the gaps and tubes can be determined from the beam dynamics, and it is equal to the product of relativistic velocity β and wavelength λ. Thus only the outer dimensions of the tubes need to be adjusted in the simulation to optimize the shunt impedance and frequency of the cavity [10]. Fig.…”

Section: Simulation Analysismentioning

confidence: 99%

“…The spiral cavity is a special type of RF structure other than the QWR (quarter wave resonator). Its remarkable properties are of high efficiency, compact structure and great rich harmonic field components [1]. Furthermore it can easily be tuned to target frequencies by varying its length.…”

Section: Introductionmentioning

confidence: 99%

Design study of the SSC-LINAC re-buncher

et al. 2013

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“…The MEBT rebuncher [8] will operate cw at 35 MHz with a gap voltage of 30 kV. Two designs for the 35 MHz rebuncher, a folded λ/4 and a spiral were evaluated on the basis of cost, size, rf and mechanical properties.…”

Section: Mebt Re-bunchermentioning

confidence: 99%

RF systems of the TRIUMF ISAC facility

Poirier

Bricault²,

Fong³

et al.

Proceedings of the 1999 Particle Accelerator Conference (Cat. No.99CH36366)

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Five rf systems, each operating in cw mode, have so far been specified for the ISAC accelerator system; a prebuncher, an RFQ, a MEBT re-buncher, five DTL cavities and three DTL bunchers. The pre-buncher was designed and built to operate at a frequency of 11.66 MHz plus three harmonics. So far it has operated successfully at full nominal voltage with fundamental plus the addition of two harmonics. Both the 8-meter long, 4-rod, split-ring type RFQ and the spiral two gap MEBT re-buncher were designed to operate at 35 MHz. The initial 2.8 meters of the RFQ (7 out of 19 rings) were installed in the 8 m long tank and have been successfully operated at full power with beam. Dark currents associated with field emission initially accounted for 40% extra power consumption at full voltage but could be eliminated with high power pulse conditioning. The remaining 12 rings are being installed to enable us to accelerate cw radioactive ion beams to 150 keV/u. A full scale model of the MEBT re-buncher was built and tested and the final structure is in the design stage. The DTL accelerator system consists of a series of multi-gap interdigital H-mode tanks and three gap splitring buncher cavities both operating at 105 MHz. The first DTL cavity has been fabricated and is undergoing rf tests.The first DTL buncher was tested to twice the nominal operating power. All amplifiers for the above were designed and built in house. This paper will report on the performance achieved for these systems.

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A 35 MHz spiral re-buncher cavity for the TRIUMF ISAC facility

Cited by 5 publications

References 2 publications

Realizing long radio-frequency quadrupole accelerators with multiple shorter and independent cavities

Realizing long radio-frequency quadrupole accelerators with multiple shorter and independent cavities

Design study of the SSC-LINAC re-buncher

RF systems of the TRIUMF ISAC facility

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