Development of room temperature crossbar-H-mode cavities for proton and ion acceleration in the low to medium beta range
Development of room temperature crossbar-H-mode cavities for proton and ion acceleration in the low to medium beta range
复制标题
开发室温横杆 H 模式腔，用于低至中 β 范围内的质子和离子加速
DOI：
10.1103/physrevstab.14.110101
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发表时间：
2011
影响因子：
--
通讯作者：
W. Barth
中科院分区：
文献类型：
--
作者：
G. Clemente;U. Ratzinger;H. Podlech;L.Groening;R. Brodhage;W. Barth
十字杆H模（CH）腔是工作在H21 → 0H模的一种加速结构.交叉杆几何形状的鲁棒性允许实现室温以及超导直线加速器腔。这种结构的并联阻抗特性对开发中低β范围的质子和重离子直线加速器具有吸引力。第一个室温八电池原型已经证明了交叉杆设计在机械结构、镀铜和冷却方面的可行性。一个创新的射频耦合的概念已经开发出两个CH腔连接的两个间隙E010模式谐振器，在同一时间，提供横向聚焦的四极三重态。这一概念已应用于FAIR质子直线加速器的设计，并建立了该加速器第二腔的缩比模型。全尺寸原型正在法兰克福大学建造。本文介绍和讨论了FAIR质子注入器（70 MeV，325 MHz，70 mA）的室温CH腔研制和总体布局。
The crossbar H -mode (CH) cavity is an accelerating structure operated in the H 21 ð 0 Þ mode. The robustness of the crossbar geometry allows one to realize room temperature as well as superconducting linac cavities. The shunt impedance characteristics of this structure are attractive to develop proton and heavy ion linacs in the low and medium beta range. A first room temperature eight-cell prototype has proven the feasibility of the crossbar design in terms of mechanical construction, copper plating, and cooling. An innovative rf coupling concept has been developed where two CH cavities are connected by a two gap E 010 -mode resonator which, at the same time, provides transverse focusing by a quadrupole triplet. The concept has been applied in the design of the new FAIR proton linac and a scaled model of the second cavity of this injector has been built and tested too. The full scale prototype is now under construction at the University of Frankfurt. In this paper, the room temperature CH cavity development as well as the general layout of the FAIR proton injector (70 MeV, 325 MHz, 70 mA) is presented and discussed.