TRANSMISSION-LINE IMPEDANCE MEASUREMENTS FOR AN ADVANCED HADRON FACILITY

被引：35

作者：

WALLING, LS

MCMURRY, DE

NEUFFER, DV

THIESSEN, HA

机构：

[1] Los Alamos Natl Lab, United States

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 1989年 / 281卷 / 03期

关键词：

Accelerators; Synchrotron--Beam Dynamics - Eddy Currents;

D O I：

10.1016/0168-9002(89)91474-5

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

High-intensity synchrotrons such as the proposed. Advanced Hadron Facility (AHF) and the Los Alamos Proton Storage Ring (PSR) must have a low beam-coupling impedance for stability. The conflicting requirement of low eddy-current effects in the rapid cycling AHF makes the AHF beam-pipe design a particularly difficult problem. A ceramic pipe deposited with conducting stripes has been proposed for AHF. It can have adequately small eddy currents, but it may have an unexpectedly large coupling impedance. Therefore, a facility for measuring transmission-line impedances has been established and is described in this paper. Measurements of transverse and longitudinal coupling impedances for ceramic/metal and other beam-pipe segments are reported; a ceramic/metal chamber can have adequately small impedance. Results of impedance measurements for other AHF and PSR devices. such as a PSR beam pickup and bumper magnet, are also reported.

引用

页码：433 / 447

页数：15

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