New higher-order-mode damping scheme for L-band superconducting cavities using a radial transmission line ☆
New higher-order-mode damping scheme for L-band superconducting cavities using a radial transmission line ☆
复制标题
DOI：
10.1016/j.nima.2005.10.082
复制
发表时间：
2006-02
影响因子：
1.4
通讯作者：
K. Umemori;M. Izawa;Kiwamu Saito;S. Sakanaka
中科院分区：
文献类型：
--
作者：
K. Umemori;M. Izawa;Kiwamu Saito;S. Sakanaka
对于能量恢复直线加速器，超导腔中的高阶模（HOM）需要良好的阻尼以防止束分裂。作为一个有前途的方法，为此，我们建议使用一个径向传输线连接到腔的两侧的HOMs阻尼。HOM功率在RF吸收器中耗散，而加速场用扼流滤波器拒绝。对径向线HOM阻尼器进行了初步设计。然后，我们测量了HOMs的阻尼通过这种方法使用TESLA型的模型腔。单胞腔的研究表明HOM阻尼具有良好的性能。
For energy recovery linacs, excellent damping of higher-order modes (HOMs) in superconducting cavities is required for preventing beam breakup. As a promising method for this purpose, we propose to damp the HOMs using a radial transmission line attached to the sides of the cavity. The HOM powers are dissipated in RF absorbers while an accelerating field is rejected with a choke filter. An initial design of this radial-line HOM damper was carried out with simulations. Then, we measured the damping of HOMs by means of this method using a model cavity of the TESLA type. Investigations on a single-cell cavity showed a promising performance of HOM damping.