Emittance balancing technique for the resonant slow extraction from a synchrotron

唐靖宇,; 刘磊,; 杨征,; 方守贤,; 关晓磊,; Tang, Jingyu; Liu, L; Zhao, Yang; Fang, SX; Guan, XL

doi:10.1103/physrevstab.12.050101

Cited by 5 publications

(2 citation statements)

References 8 publications

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“…Unfortunately, the slowly extracted beam from a synchrotron has a property of very asymmetric emittance in the two transverse planes, with the horizontal emittance much smaller. An emittance balancing technique [20] has been proposed to solve the problem, which uses either a solenoid or a rotator. A rotator is a group of quadrupoles mechanically rotational with the phase advances of 2π and π in the two transverse phase planes.…”

Section: Beam Delivery Linesmentioning

confidence: 99%

“…The emittance balancing in the trunk line can benefit all the fixed nozzles. Another cheaper solution is also under consideration, which uses a thin foil in the trunk line to blow up the horizontal emittance and produce approximately equal emittance in the two transverse phase planes [21] but the performance is worse than the one with the emittance balancing technique [20].…”

Section: Beam Delivery Linesmentioning

confidence: 99%

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ATPF – a dedicated proton therapy facility

Fang¹,

Guan²,

Tang³

et al. 2010

Chinese Phys. C

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A proton therapy facility based on a linac injector and a slow-cycling synchrotron is proposed. To obtain good treatments for different cancer types, both the spot scanning method and the double-scattering method are adopted in the facility, whereas the nozzles include both gantry and fixed beam types. The proton accelerator chain includes a synchrotron of 250 MeV in maximum energy, an injector of 7 MeV consisting of an RFQ and a DTL linac, with a repetition rate of 0.5 Hz. The slow extraction using the third-order resonance and together with the RFKO method is considered to be a good method to obtain a stable and more-or-less homogenous beam spill. To benefit the spot scanning method, the extraction energy can be as many as about 200 between 60 MeV and 230 MeV. A new method - the emittance balancing technique of using a solenoid or a quadrupole rotator is proposed to solve the problem of unequal emittance in the two transverse planes with a beam slowly extracted from a synchrotron. The facility has been designed to keep the potential to be upgraded to include the carbon therapy in the future.

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Section: Beam Delivery Linesmentioning

confidence: 99%

Section: Beam Delivery Linesmentioning

confidence: 99%

ATPF – a dedicated proton therapy facility

Fang¹,

Guan²,

Tang³

et al. 2010

Chinese Phys. C

View full text Add to dashboard Cite

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An ion-optical design study of a carbon-ion rotating gantry with a superconducting final bending magnet

Bokor¹,

Pavlovič²

2016

Nuclear Instruments and Methods in Physics Research Section A:

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Commissioning of a gantry beamline with rotator at a synchrotron-based ion therapy center

Pivi,

Adler,

Guidoboni

et al. 2024

Phys. Rev. Accel. Beams

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This paper provides an overview of the worldwide first commissioning of a gantry beamline with a rotator at the MedAustron synchrotron-based proton/ion cancer therapy facility in Wiener Neustadt, Austria. The gantry beamline consists of the high energy beam transfer (HEBT) line and the gantry beam transport system. It transports the beam from the synchrotron to the gantry-room isocenter. The HEBT transports the beam from the synchrotron to the gantry entrance, which is the coupling point between the HEBT and the gantry. The rotator is one of the HEBT modules, thus it is an integral part of the gantry beamline. The MedAustron rotator is the worldwide first rotator system used to match slowly extracted asymmetric beams from the synchrotron to the rotating gantry. In this paper, main attention is paid to ion-optical and beam-alignment aspects of the beamline commissioning. A novel orbit-correction and beam-alignment technique has been developed specifically for the beamline with the rotator. While the theoretical concept of the rotator has existed for almost two decades, the MedAustron rotator is the first hardware implementation of this concept all over the world. The presented overview of the beamline commissioning includes a description of the principal technical solutions and main results of the first beam-transport measurements. Since the measured beam size and beam position agree well with theoretical predictions, one can conclude that the proof-of-concept of the rotator-matching has been successfully accomplished. Published by the American Physical Society 2024

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Emittance balancing technique for the resonant slow extraction from a synchrotron

Cited by 5 publications

References 8 publications

ATPF – a dedicated proton therapy facility

ATPF – a dedicated proton therapy facility

An ion-optical design study of a carbon-ion rotating gantry with a superconducting final bending magnet

Commissioning of a gantry beamline with rotator at a synchrotron-based ion therapy center

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