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Single Radio Frequency Bucket Injection in the 88-Inch Cyclotron Using a Pulsed High Voltage Chopper.

M. Kireeff Covo, P. Bloemhard,J. Benitez, M. Johnson,D. Todd, J. Cruz Duran,B. Ninemire,L. Phair

REVIEW OF SCIENTIFIC INSTRUMENTS(2024)

Lawrence Berkeley Natl Lab

Cited 2|Views8
Abstract
A single radio frequency bucket of the 88-Inch Cyclotron is filled using a fast chopper located in the axial line. The bucket then accelerates until it reaches the deflector, at which point, it is extracted as a train of bunches. This phenomenon can be attributed to the characteristic multi-turn extraction of the cyclotron and, by simplifying the complex dynamics of a cyclotron, corresponds to the conceptual transfer function of the cyclotron. The confirmation of the single radio frequency bucket injection was achieved by operating the cyclotron in the third harmonic mode and observing the absence of intermediate bunches during the multiple-bunch extraction.
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Chopped Deflector Technique for Single-Bunch Extraction at the 88-Inch Cyclotron

M. Kireeff Covo,D. Todd, P. Bloemhard,J. Benitez, M. Johnson, J. Cruz Duran, J. Garcia,B. Ninemire,L. Phair
IEEE TRANSACTIONS ON NUCLEAR SCIENCE 2024

被引用0

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要点】:本文提出了一种利用脉冲高压斩波器在88英寸回旋加速器中实现单射频桶注入的方法,通过简化回旋加速器的复杂动力学,实现了加速器中复杂多圈提取的简化模型。

方法】:研究通过在回旋加速器的轴向线上安装快速斩波器,实现了单一射频桶的填充,并利用回旋加速器的第三谐波模式操作以验证单桶注入。

实验】:实验在88英寸回旋加速器上进行,通过在第三谐波模式下操作并观察多束提取过程中中间束的缺失来确认单射频桶注入,实验结果验证了所提方法的有效性。