A beam branching method for timing and spectral characterization of hard X-ray free-electron lasers

被引：88

作者：

Katayama, Tetsuo ^{[1
,2
]}

Owada, Shigeki ^{[2
]}

Togashi, Tadashi ^{[1
,2
]}

Ogawa, Kanade ^{[2
,4
,5
,6
,7
]}

Karvinen, Petri ^{[3
,4
,5
,6
,7
]}

Vartiainen, Ismo ^{[3
,4
,5
,6
,7
]}

Eronen, Anni ^{[3
,4
,5
,6
,7
]}

David, Christian ^{[3
]}

Sato, Takahiro ^{[2
,4
,5
,6
,7
]}

Nakajima, Kyo ^{[1
,2
]}

Joti, Yasumasa ^{[1
,2
]}

Yumoto, Hirokatsu ^{[1
]}

Ohashi, Haruhiko ^{[1
]}

Yabashi, Makina ^{[2
]}

机构：

[1] Japan Synchrotron Radiat Res Inst, 1-1-1 Kouto, Sayo, Hyogo 6795198, Japan

[2] RIKEN SPring 8 Ctr, 1-1-1 Kouto, Sayo, Hyogo 6795148, Japan

[3] Paul Scherrer Inst, CH-5232 Villigen, Switzerland

[4] Japan Atom Energy Agcy, 8-1-7 Umemidai, Kyoto 6190215, Japan

[5] Finnlitho Ltd, FI-80140 Joensuu, Finland

[6] Univ Eastern Finland, Inst Photon, FI-80100 Joensuu, Finland

[7] Univ Tokyo, Sch Sci, Dept Chem, Bunkyo Ku, 7-3-1 Hongo, Tokyo 1130033, Japan

来源：

STRUCTURAL DYNAMICS-US | 2016年 / 3卷 / 03期

关键词：

ABSORPTION SPECTROSCOPY; TIME; DYNAMICS; SINGLE;

D O I：

10.1063/1.4939655

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We report a method for achieving advanced photon diagnostics of x-ray free-electron lasers (XFELs) under a quasi-noninvasive condition by using a beam-splitting scheme. Here, we used a transmission grating to generate multiple branches of x-ray beams. One of the two primary diffracted branches (+1st-order) is utilized for spectral measurement in a dispersive scheme, while the other (-1st-order) is dedicated for arrival timing diagnostics between the XFEL and the optical laser pulses. The transmitted x-ray beam (0th-order) is guided to an experimental station. To confirm the validity of this timing-monitoring scheme, we measured the correlation between the arrival timings of the -1st and 0th branches. The observed error was as small as 7.0 fs in root-mean-square. Our result showed the applicability of the beam branching scheme to advanced photon diagnostics, which will further enhance experimental capabilities of XFEL. (C) 2016 Author(s).

引用

页数：14

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