Model cavity of an alternating-phase-focused IH-DTL

被引：10

作者：

Iwata, Y.

Fujimoto, T.

Miyahara, N.

Fujisawa, T.

Ogawa, H.

Yamada, S.

Murakami, T.

Mitsumoto, T.

Tsutsui, H.

机构：

[1] NIRS, Dept Accelerator Phys & Engn, Chiba 2638555, Japan

[2] AEC, Chiba 2630043, Japan

[3] SHI Ltd, Tokyo 1418686, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2006年 / 566卷 / 02期

关键词：

heavy ion linac; Interdigital H-mode (IH); Alternating-Phase-Focusing (APF); medical accelerator;

D O I：

10.1016/j.nima.2006.07.029

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

A compact injector for medical accelerators was designed. The injector consists of a compact Electron-Cyclotron-Resonance Ion Source (ECRIS) and two linacs, which are a Radio-Frequency-Quadrupole (RFQ) linac and an Interdigital H-mode Drift-Tube-Linac (IH-DTL) having the same operating frequency of 200 MHz. For beam focusing of the IH-DTL, the method of Alternating-Phase-Focusing (APF) was applied. Before constructing the compact injector, a model cavity of the IH-DTL was manufactured, and measurements of the electric-field distributions were performed. The gap-voltage distributions, obtained by integrating the measured electric field, were compared with those calculated using a three-dimensional field solver. The accuracy of the calculated field distributions is discussed. Finally, fine adjustments of the gap voltages using inductive tuners are described. (c) 2006 Elsevier B.V. All rights reserved.

引用

页码：256 / 263

页数：8

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