High time resolution beam-based measurement of the rf-to-laser jitter in a photocathode rf gun

被引：9

作者：

Zhang, Zhen ^{[1
,2
]}

Du, Yingchao ^{[1
,2
]}

Yan, Lixin ^{[1
,2
]}

Du, Qiang ^{[1
,2
]}

Hua, Jianfei ^{[1
,2
]}

Shi, Jiaru ^{[1
,2
]}

Yang, Jin ^{[1
,2
]}

Wang, Dan ^{[1
,2
]}

Huang, Wenhui ^{[1
,2
]}

Chen, Huaibi ^{[1
,2
]}

Tang, Chuanxiang ^{[1
,2
]}

机构：

[1] Tsinghua Univ, Dept Engn Phys, Beijing 100084, Peoples R China

[2] Tsinghua Univ, Minist Educ, Key Lab Particle & Radiat Imaging, Beijing 100084, Peoples R China

来源：

PHYSICAL REVIEW SPECIAL TOPICS-ACCELERATORS AND BEAMS | 2014年 / 17卷 / 03期

基金：

中国国家自然科学基金;

关键词：

GAIN HARMONIC-GENERATION; ELECTRON-DIFFRACTION; THOMSON-SCATTERING; X-RAYS; SYNCHRONIZATION;

D O I：

10.1103/PhysRevSTAB.17.032803

中图分类号：

O57 [原子核物理学、高能物理学];

学科分类号：

070202 ;

摘要：

Characterizing the rf-to-laser jitter in the photocathode rf gun and its possible origins is important for improving the synchronization and beam quality of the linac based on the photocathode rf gun. A new method based on the rf compression effect in the photocathode rf gun is proposed to measure the rf-to-laser jitter in the gun. By taking advantage of the correlation between the rf compression and the laser injection phase, the error caused by the jitter of the accelerating field in the gun is minimized and thus 10 fs time resolution is expected. Experimental demonstration at the Tsinghua Thomson scattering x-ray source with a time resolution better than 35 fs is reported in this paper. The experimental results are successfully used to obtain information on the possible cause of the jitter and the accompanying drifts.

引用

页数：9

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