Analysis on effects of transverse electric field in an injector cavity of compact-ERL at KEK

被引：7

作者：

Hwang, Ji-Gwang ^{[1
]}

Kim, Eun-San ^{[1
]}

Miyajima, Tsukasa ^{[2
]}

Honda, Yosuke ^{[2
]}

Harada, Kentaro ^{[2
]}

Shimada, Miho ^{[2
]}

Takai, Ryota ^{[2
]}

Kume, Tatsuya ^{[2
]}

Nagahashi, Shinya ^{[2
]}

Obina, Takashi ^{[2
]}

Nakamura, Norio ^{[2
]}

Sakanaka, Shogo ^{[2
]}

Hajima, Ryoichi ^{[3
]}

Nagai, Ryoji ^{[3
]}

Nishimori, Nobuyuki ^{[3
]}

Yamamoto, Masahiro ^{[2
]}

Uchiyama, Takashi ^{[2
]}

Kako, Eiji ^{[2
]}

Michizono, Shinichiro ^{[2
]}

Miura, Takako ^{[2
]}

机构：

[1] Kyungpook Natl Univ, Dept Phys, Taegu 702701, South Korea

[2] High Energy Accelerator Org, KEK, Tsukuba, Ibaraki 3050801, Japan

[3] Japan Atom Energy Res Inst, Tokai, Ibaraki 31911, Japan

来源：

NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT | 2014年 / 753卷

基金：

新加坡国家研究基金会;

关键词：

Energy recovery linac; High performance injector system; Beam dynamics in a superconducting cavity; Emittance growth compensation;

D O I：

10.1016/j.nima.2014.03.045

中图分类号：

TH7 [仪器、仪表];

学科分类号：

0804 ; 080401 ; 081102 ;

摘要：

For a future synchrotron light source based on a linac, e.g. an X-ray free electron laser and an energy recovery linac (ERL), an injector is a key component to generate a high brightness electron beam. For the acceleration and transportation of the electron beans in the injector, the adjustment abeam orbit inside the cavity is important to avoid the deterioration of the beam quality due to the transverse electric field of it, which causes the transverse emittance growth. To adjust the beam orbit, an investigation of the electromagnetic center of the cavity is required in the beam operation. This paper shows a new method for measuring the electromagnetic center of the cavity, and describes an analytical model of emittance growth due to a combination of transverse electric field and orbit offset. The validation of the method was confirmed by the emittance measurement in the compact ERL (cERL) injector at KEK. (C) 2014 Elsevier B.V. All rights reserved.

引用

页码：97 / 104

页数：8

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