Enhancement of accelerating field of microwave cavities by magnetic insulation

被引：4
|
作者：
Stratakis, Diktys [1 ]
Gallardo, Juan C. [1 ]
Palmer, Robert B. [1 ]
机构：
[1] Dept Phys, Brookhaven Natl Lab, Upton, NY 11973 USA
来源：
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2011年 / 643卷 / 01期
关键词：
Particle accelerators; Microwave cavities; Magnetic insulation; rf breakdown;
D O I：
10.1016/j.nima.2011.03.066
中图分类号：
TH7 [仪器、仪表];
学科分类号：
0804 ; 080401 ; 081102 ;
摘要：
Limitations on the maximum achievable accelerating gradient of microwave cavities can strongly influence the performance, length, and cost of particle accelerators. Gradient limitations are widely believed to be initiated by electron emission from the cavity surfaces. Here, we show that the deleterious effects of field emission are effectively suppressed by applying a tangential magnetic field to the cavity walls. With the aid of numerical simulations we compute the field strength required to insulate an 805 MHz cavity and estimate the cavity's tolerances to typical experimental errors such as magnet misalignments and positioning errors. Then, we review an experimental program, currently under progress, to further study the concept. Finally, we report on two specific examples that illustrate the feasibility of magnetic insulation into prospective particle accelerator applications. (C) 2011 Elsevier B.V. All rights reserved.
引用
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页码：1 / 5
页数：5
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