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Photocathodes for the energy recovery linacs

エネルギー回収型加速器に用いる光陰極

Rao, T.*; Burrill, A.*; Chang, X. Y.*; Smedley, J.*; 西谷 智博; Hernandez Garcia, C.*; Poelker, M.*; Seddon, E.*; Hannon, F. E.*; Sinclair, C. K.*; Lewellen, J.*; Feldman, D.*

Rao, T.*; Burrill, A.*; Chang, X. Y.*; Smedley, J.*; Nishitani, Tomohiro; Hernandez Garcia, C.*; Poelker, M.*; Seddon, E.*; Hannon, F. E.*; Sinclair, C. K.*; Lewellen, J.*; Feldman, D.*

近年、次期光源や高エネルギー核物理学に用いるエネルギー回収型線形加速器(ERL)の利用が注目を浴びている。ERLが要求する電子源性能は、電流値、電流密度、繰り返し、温度や加速勾配など広範囲に渡る。これらの性能を実現する電子源として、光陰極電子源が重要な役割を果たすと考えられている。本論文では、ERLを実現しうる二次電子放出型、セシウム付加ディスペンサー型、フィールドエミッタ型や超格子半導体の光陰極電子源について概論を提供する。

In the past few years, there has been considerable interest in using an energy recovery linac (ERL) for future light sources and high-energy nuclear physics. The electron beam requirements of the ERLs under consideration span a wide range in parameters such as current, current density, frequency, operating temperatures, accelerating gradients etc. The design of the injector, whether it is normal conducting or superconducting, DC or RF, average current, temporal profile of the electron bunch all play key role in the choice of the photocathode. In this paper, we attempt to provide an overview of the available cathode materials, the pros and cons associated with each and the electron beam parameters they can provide.

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パーセンタイル:96.09

分野:Instruments & Instrumentation

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