Status and operation of the Linac4 ion source prototypes.
Status and operation of the Linac4 ion source prototypes.
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Linac4 离子源原型的状态和操作。
DOI：
10.1063/1.4848975
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发表时间：
2014
期刊：
影响因子：
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通讯作者：
T. Yamamoto
中科院分区：
文献类型：
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作者：
J. Lettry;D. Aguglia;P. Andersson;S. Bertolo;A. Butterworth;Y. Coutron;A. Dallocchio;E. Chaudet;J. Gil;R. Guida;J. Hansen;A. Hatayama;I. Koszar;E. Mahner;C. Mastrostefano;S. Mathot;S. Mattei;Ø. Midttun;P. Moyret;D. Nisbet;K. Nishida;M. O’Neil;M. Ohta;M. Paoluzzi;C. Pasquino;H. Pereira;J. Rochez;J. S. Sanchez Alvarez;J. S. Sánchez Arias;R. Scrivens;T. Shibata;D. Steyaert;N. Thaus;T. Yamamoto
欧洲核子研究中心（CERN）的直线加速器4（Linac4）的45千伏负氢离子源原型安装在一个专用的离子源测试台以及直线加速器4隧道中。文中描述了脉冲式氢气注入、射频维持等离子体以及脉冲高压的运行情况。介绍了两个依靠2兆赫兹射频等离子体加热的原型的首批实验结果。等离子体通过电容耦合被点燃，并通过电感耦合维持。从等离子体发出的光由指向射频螺线管中间的等离子体室壁以及等离子体室轴线的观察窗收集。已经对等离子体进行了光发射光谱学和光度学的初步测量。介绍了一种铯化离子源的设计。该体离子源已产生了16 - 22毫安的45千电子伏负氢离子束，该离子束已成功用于直线加速器4的低能束流传输（LEBT）、射频四极（RFQ）加速器以及斩波器的调试。
CERN's Linac4 45 kV H(-) ion sources prototypes are installed at a dedicated ion source test stand and in the Linac4 tunnel. The operation of the pulsed hydrogen injection, RF sustained plasma, and pulsed high voltages are described. The first experimental results of two prototypes relying on 2 MHz RF-plasma heating are presented. The plasma is ignited via capacitive coupling, and sustained by inductive coupling. The light emitted from the plasma is collected by viewports pointing to the plasma chamber wall in the middle of the RF solenoid and to the plasma chamber axis. Preliminary measurements of optical emission spectroscopy and photometry of the plasma have been performed. The design of a cesiated ion source is presented. The volume source has produced a 45 keV H(-) beam of 16-22 mA which has successfully been used for the commissioning of the Low Energy Beam Transport (LEBT), Radio Frequency Quadrupole (RFQ) accelerator, and chopper of Linac4.